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| 1 | Role of autophagy in prion protein-induced neurodegenerative diseases显示文摘Prion 疾病,由海绵状的退化和错误褶层的累积描绘了并且在中央神经系统聚集了 PrPSc,是致命的 neurodegenerative 和人和动物的传染混乱之一。在更早的研究,在神经原的 autophagy 液泡经常在象 Alzheimer 的家那样的 neurodegenerative 疾病被观察, Parkinson 是,并且亨廷顿是象 prion 疾病一样的疾病。Autophagy 是几个细胞质的部件(蛋白质或细胞器) 被在一个 double-membrane-bound 泡扣押的一个高度保存的 homeostatic 过程称为的 autophagosome 并且与 lysosome 在他们的熔化之上降级了。在基础生理的层次的细胞间的自我消化的小径为维持纸巾和机关的健康地位是不可缺少的。在 prion 感染的情况下,增加证据显示 autophagy 把消除病理学的 PrPSc 的一个关键能力在神经原以内积累了。相反,在影响神经原的 autophagy 机能障碍可以贡献海绵状的变化的形成。在这评论,我们在 neurodegenerative 混乱关于哺乳动物的 autophagy 的效果总结了最近的调查结果,特别地在 prion 疾病。我们也总结了一些小分子的治疗学的潜力(例如锂, rapamycin, Sirtuin 1 和 resveratrol ) 在大脑上减轻如此的疾病的目标工作。而且,我们讨论了 autophagy 的争论角色,它是否调停 neuronal 毒性或在 neurodegenerative 混乱服务保护的功能。 | Hao Yao Deming Zhao Sher Hayat Khan Lifeng Yang | 2013 | Acta Biochimica et Biophysica Sinica2013，45，6： | 65 |
| 2 | Personal Review:Sources of sulfide in waste streams and current biotechnologies for its removal显示文摘Sulfide-containing waste streams are generated by a number of industries. It is emitted into the environment as dis- solved sulfide (S2- and HS-) in wastewaters and as H2S in waste gases. Due to its corrosive nature, biological hydrogen sulfide removal processes are being investigated to overcome the chemical and disposal costs associated with existing chemically based removal processes. The nitrogen and sulfur metabolism interacts at various levels of the wastewater treatment process. Hence, the sulfur cycle offers possibilities to integrate nitrogen removal in the treatment process, which needs to be further optimized by appropriate design of the reactor configuration, optimization of performance parameters, retention of biomass and optimization of biomass growth. The present paper reviews the biotechnological advances to remove sulfides from various environments. | MAHMOOD Qaisar ZHENG Ping CAI Jing HAYAT Yousaf HASSAN Muhammad Jaffar WU Dong-lei HU Bao-lan | 2007 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2007，8，7： | 22 |
| 3 | Efficient elimination of organic and inorganic pollutants by biochar and biochar-based materials显示文摘Biochar have received multidisciplinary attention because of their extraordinary physicochemical properties.In this review,the application of biochar and biochar-based materials for the efficient elimination of organic and inorganic pollutants are summarized.The sorption of organic chemicals and heavy metal ions/radionuclides,degradation/transformation of organic pollutants,and sorption-reduction-solidification of high-valent metal ions are described in detail.The interaction mechanism at molecular level from advanced spectroscopic techniques and theoretical calculations is discussed.Finally,the challenges in the application of biochar and biochar-supported materials in the immobilization of heavy metal ions and photocatalytic degradation of persistent organic pollutants in soils or wastewater are pointed out.This review is helpful for the graduate stu-dents to understand the recent works about biochar and biochar-supported materials in environmental pollutants management. | Baowei Hu Yuejie Ai Jie Jin Tasawar Hayat Ahmed Alsaedi Li Zhuang Xiangke Wang | 2020 | Biochar2020，2，1： | 18 |
| 4 | 二维有机-无机杂化钙钛矿:从材料性能到器件应用(英文)显示文摘二维(2D)钙钛矿材料(包括纯2D和准2D)是在传统意义上的三维钙钛矿晶格中插入大基团卤化铵形成的.在过去的20年里,二维钙钛矿材料种类不断丰富,相关理论研究不断深入,在光电器件领域的应用不断拓展.本综述介绍了2D钙钛矿材料的基本形成机制和性能,汇总和比较了2D钙钛矿薄膜的制备方法,并给出了其在太阳电池以及发光二极管领域的应用实例.最后,提出了该领域亟待解决的问题,以及未来的研究趋势. | 马爽 蔡墨朗 程泰 丁希宏 时小强 Ahmed Alsaedi Tasawar Hayat 丁勇 谭占鳌 戴松元 | 2018 | Science China Materials2018，61，10： | 18 |
| 5 | Application of graphene oxides and graphene oxide-based nanomaterials in radionuclide removal from aqueous solutions显示文摘With the fast development of nanoscience and nanotechnology,the nanomaterials have attracted multidisciplinary interests.The high specific surface area and large numbers of oxygen-containing functional groups of graphene oxides(GOs) make them suitable in the preconcentration and solidification of radionuclides from wastewater.In this paper,mainly based on the recent work carried out in our laboratory,the efficient elimination of radionuclides using GOs and GO-based nanomaterials as adsorbents are summarized and the interaction mechanisms are discussed from the results of batch techniques,surface complexation modeling,spectroscopic analysis and theoretical calculations.This review is helpful for the understanding of the interactions of radionuclides with GOs and GO-based nanomaterials,which is also crucial for the application of GOs and GO-based nanomaterials in environmental radionuclide pollution management and also helpful in nuclear waste management. | Xiangxue Wang Shujun Yu Jie Jin Hongqing Wang Njud S. Alharbi Ahmed Alsaedi Tasawar Hayat Xiangke Wang | 2016 | Science Bulletin2016，61，20： | 17 |
| 6 | Effect of Salicylic Acid on Salinity-induced Changes in Brassica juncea显示文摘Seeds of Indian mustard (Brassica juncea (L.) Czern. et Coss.) were exposed to 0, 50, 100 and 150 mmol/L NaCl for 8 h and seeds were sown in an earthen pot. These stressed seedlings were subsequently sprayed with 10 μmol/L salicylic acid (SA) at 30 d and were sampled at 60 d to assess the changes in growth, photosynthesis and antioxidant enzymes. The seedlings raised from the seeds treated with NaCl had significantly reduced growth and the activities of carbonic anhydrase, nitrate reductase and photosynthesis, and the decrease was proportional to the increase in NaCl concentration. However, the antioxidant enzymes (catalase, peroxidase and superoxide dismutase) and proline content was enhanced in response to NaCl and/or SA treatment, where their interaction had an additive effect. Moreover, the toxic effects generated by the lower concentration of NaCl (50 mmol/L) were completely overcome by the application of SA. It was, therefore, concluded that SA ameliorated the stress generated by NaCl through the alleviated antioxidant system. | Mohammad Yusuf Syed Aiman Hasan Barket Ali Shamsul Hayat Qazi Fariduddin Aqil Ahmad | 2008 | Journal of Integrative Plant Biology2008，50，9： | 16 |
| 7 | Effects of Silicon-Based Fertilizer on Growth, Yield and Nutrient Uptake of Rice in Tropical Zone of Vietnam显示文摘Application of silicon(Si) could greatly boost rice yield and mitigate abiotic stress,especially drought.A field experiment was conducted during 2015 at the research farm of Hong Duc University,Thanh Hoa City,Vietnam,to evaluate the effects of five different combined doses of standard fertilizer practice and Si fertilizer on growth,yield and yield components,as well as nutrient uptake of rice.The treatments consisted of the recommended dose of fertilizer(RDF,110 kg/hm^2 N + 90 kg/hm^2 P_2O_5 + 80 kg/hm^2 K_2O) as the control,RDF + 100 kg/hm^2 SiO_2,RDF + 200 kg/hm^2 SiO_2,RDF + 300 kg/hm^2 SiO_2 and RDF + 400 kg/hm^2 SiO_2.The results showed that the growth,grain and straw yields as well as yield components(number of grains per panicle,seed-setting rate and 1000-grain weight) were significantly affected by Si application.The highest grain yield of 3 705 kg/hm^2 was obtained with the highest level of Si fertilizer in combination with RDF(RDF + 400 kg/hm^2 SiO_2),however,it was statistically at par with the yields obtained with RDF + 300 kg/hm^2 SiO_2(3 664 kg/hm^2) and RDF + 200 kg/hm^2 SiO_2(3 621 kg/hm^2).The optimum dose of Si fertilizer with maximized grain yield(3 716 kg/hm^2) was 329 kg/hm^2 SiO_2.The nutrient(Si,N,P and K) uptakes of rice were also significantly enhanced by Si application.Si application at the level of 329 kg/hm^2 along with RDF would help in the sustainable production of rice in the tropical zone of Vietnam. | Tran Xuan CUONG Hayat ULLAH Avishek DATTA Tran Cong HANH | 2017 | Rice science2017，24，5： | 16 |
| 8 | PTEN inhibition and axon regeneration and neural repair显示文摘The intrinsic growth ability of all the neurons declines during development although some may grow better than others. Numerous intracellular signaling proteins and transcription factors have been shown to regulate the intrinsic growth capacity in mature neurons. Among them, PI3 kinase/Akt pathway is important for controlling axon elongation. As a negative regulator of this pathway, the tumor suppressor phosphatase and tensin homolog(PTEN) appears critical to control the regenerative ability of young and adult neurons. This review will focus on recent research progress in axon regeneration and neural repair by PTEN inhibition and therapeutic potential of blocking this phosphatase for neurological disorders. Inhibition of PTEN by deletion in conditional knockout mice, knockdown by short-hairpin RNA, or blockade by pharmacological approaches, including administration of selective PTEN antagonist peptides, stimulates various degrees of axon regrowth in juvenile or adult rodents with central nervous system injuries. Importantly, post-injury PTEN suppression could enhance axonal growth and functional recovery in adult central nervous system after injury. | Yosuke Ohtake Umar Hayat Shuxin Li | 2015 | Neural Regeneration Research2015，10，9： | 14 |
| 9 | Effect of Heat Treatment on Microstructure,Mechanical Properties and Fracture Behaviour of Ship and Dual Phase Steels显示文摘Grade A(GA)and high strength steel DH36 ship steels possessing different chemical compositions were used,and strength properties of GA steel and DH36 steel were compared.Additionally,4 types of dual phase(DP)steels with different martensite volume fractions(MVFs)were produced from GA steel by means of heat treatment and they were compared with other steels through conducting microstructure,microhardness,tensile and impact tests.The fracture surfaces of specimens(DH36,GA and DP steels)exposed to tensile and Charpy impact tests were investigated by scanning electron microscope.Furthermore,it was found that the specimens quenched from 800 and 900 ℃ had better strength than DH36 steel.The tensile test results indicated that the tensile strength of DP steel water quenched from 900 ℃ was 3 times that of GA steel and twice that of DH36 steel. | Fatih Hayat Hüseyin Uzun | 2011 | Journal of Iron and Steel Research(International)2011，18，8： | 9 |
| 10 | Synthesis of ordered mesoporous carbonaceous materials and their highly efficient capture of uranium from solutions显示文摘An extremely effortless method was applied for successful synthesis of mesoporous carbonaceous materials(MCMs) using well-ordered mesoporous silica as template. Various characterizations(scanning electron microscopy(SEM), transmission electron microscopy(TEM), X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FT-IR), Raman, X-ray photoelectron spectroscopy(XPS), Brunner-Emmet-Teller(BET) and Zeta potential) confirmed that MCMs had large surface area, uniform pore size distribution, and abundant oxygen-containing functional groups. The batch techniques were employed to study U(VI) adsorption on MCMs under a wide range of experiment conditions. The adsorption kinetics of U(VI) onto MCMs were well-fitted by pseudo-second-order kinetic model, indicating a chemisorption process. The excellent adsorption capacity of MCMs calculated from the Langmuir model was 293.95 mg g^(-1) at pH 4.0. The FT-IR and XPS analyses further evidenced that the binding of U(VI) onto MCMs was ascribed to the plentiful adsorption sites(–OH and –COOH groups) in the internal mesoporous structure, which could efficiently trap guest U(VI) ions. The results presented herein revealed that MCMs were ideal adsorbents in the efficient elimination of uranium or other lanthanides/actinides from aqueous solutions, which would play an important role in environmental pollution management application. | Chenlu Zhang Xing Li Zhongshan Chen Tao Wen Shuyi Huang Tasawar Hayat Ahmed Alsaedi Xiangke Wang | 2018 | Science China Chemistry2018，61，3： | 8 |
| 11 | Efficacy of peroral endoscopic myotomy vs other achalasia treatments in improving esophageal function显示文摘AIM: To assess and compare the esophageal function after peroral endoscopic myotomy(POEM) vs other conventional treatments in achalasia.METHODS: Chart review of all achalasia patients who underwent POEM, laparoscopic Heller myotomy(LHM) or pneumatic dilation(PD) at our institution between January 2012 and March 2015 was performed. Patient demographics, type of achalasia, prior treatments, pre- and post-treatment timed barium swallow(TBE) and high-resolution esophageal manometry(HREM) findings were compared between the three treatment groups. Patients who had both pre- and 2 mo posttreatment TBE or HREM were included in the final analysis. TBE parameters compared were barium column height, width and volume of barium remaining at 1 and 5 min. HREM parameters compared were basal lower esophageal sphincter(LES) pressures and LES-integrated relaxation pressures(IRP). Data are presented as mean ± SD, median [25th, 75 th percentiles] or frequency(percent). Analysis of variance, KruskalWallis test, Pearsons χ~2 test and Fishers Exact tests were used for analysis.RESULTS: A total of 200 achalasia patients were included of which 36 underwent POEM, 22 underwent PD and 142 underwent LHM. POEM patients were older(55.4 ± 16.8 years vs 46.5 ± 15.7 years, P = 0.013) and had higher BMI than LHM(29.1 ± 5.9 kg/m^2 vs 26 ± 5.1 kg/m^2, P = 0.012). More number of patients in POEM and PD groups had undergone prior treatments compared to LHM group(72.2% vs 68.2% vs 44.3% respectively, P = 0.003). At 2 mo post-treatment, all TBE parameters including barium column height, width and volume remaining at 1 and 5 min improved significantly in all three treatment groups(P = 0.01 to P < 0.001) except the column height at 1 min in PD group(P = 0.11). At 2 mo post-treatment, there was significant improvement in basal LES pressure and LES-IRP in both LHM(40.5 mm Hg vs 14.5 mm Hg and 24 mm Hg vs 7.1 mm Hg respectively, P < 0.001) and POEM groups(38.7 mm Hg vs 11.4 mm Hg and 23.6 mm Hg vs 6.6 mm Hg respectively, P < 0.001). However, when the efficacy of three treatments were compared to each other in terms of improvement in TBE or HREM parameters at 2 mo, there was no significant difference(P > 0.05).CONCLUSION: POEM, PD and LHM were all effective in improving esophageal function in achalasia at shortterm. There was no difference in efficacy between the three treatments. | Madhusudhan R Sanaka Umar Hayat Prashanthi N Thota Ramprasad Jegadeesan Monica Ray Scott L Gabbard Neha Wadhwa Rocio Lopez Mark E Baker Sudish Murthy Siva Raja | 2016 | World Journal of Gastroenterology2016，22，20： | 7 |
| 12 | Comparing Properties of Adhesive Bonding,Resistance Spot Welding,and Adhesive Weld Bonding of Coated and Uncoated DP 600 Steel显示文摘Zinc coated dual phase 600 steel(DP 600 grade)was investigated,utilisation of which has gradually increased with each passing day in the automotive industry.The adhesive bonding(AB),resistance spot welding(RSW),and adhesive weld bonding(AWB)joints of the zinc coated DP 600 steel were investigated.Additionally,the zinc coating was removed using HCL acid in order to investigate the effect of the coating.The microstructure,tensile shear strengths,and fracture properties of adhesive bonding(AB),resistance spot welding(RSW),and adhesive weld bonding(AWB)joints of the coated and uncoated DP 600 steel were compared.In addition,a mechanical-electrical-thermal coupled model in a finite element analysis environment was utilised.The thermal profile phenomenon was calculated by simulating this process.The results of the tensile shear test indicated that the tensile load bearing capacity(TLBC)values of the coated specimens among the three welding methods were higher than those of the uncoated specimens.Additionally,the tensile strength of the AWB joints of the coated and uncoated specimens was higher than that of the AB and RSW joints.It was determined that the fracture behaviours and the deformation caused were different for the three welding methods. | Fatih Hayat | 2011 | Journal of Iron and Steel Research(International)2011，18，9： | 7 |
| 13 | Advances in fungal-assisted phytoremediation of heavy metals:A review显示文摘Trace metals such as manganese(Mn),copper(Cu),zinc(Zn),and iron(Fe)are essential for many biological processes in plant life cycles.However,in excess,they can be toxic and disrupt plant growth processes,which is economically undesirable for crop production.For this reason,processes such as homeostasis and transport control of these trace metals are of constant interest to scientists studying heavily contaminated habitats.Phytoremediation is a promising cleanup technology for soils polluted with heavy metals.However,this technique has some disadvantages,such as the slow growth rate of metal-accumulating plant species,low bioavailability of heavy metals,and long duration of remediation.Microbial-assisted phytoremediation is a promising strategy for hyperaccumulating,detoxifying,or remediating soil contaminants.Arbuscular mycorrhizal fungi(AMF)are found in association with almost all plants,contributing to their healthy performance and providing resistance against environmental stresses.They colonize plant roots and extend their hyphae to the rhizosphere region,assisting in mineral nutrient uptake and regulation of heavy metal acquisition.Endophytic fungi exist in every healthy plant tissue and provide enormous services to their host plants,including growth enhancement by nutrient acquisition,detoxification of heavy metals,secondary metabolite regulation,and enhancement of abiotic/biotic stress tolerance.The aim of the present work is to review the recent literature regarding the role of AMF and endophytic fungi in plant heavy metal tolerance in terms of its regulation in highly contaminated conditions. | Muhammad KHALID Saeed UR-RAHMAN Danial HASSANI Kashif HAYAT Pei ZHOU Nan HUI | 2021 | Pedosphere2021，31，3： | 6 |
| 14 | Peristaltic flow in an asymmetric channel with convective boundary conditions and Joule heating显示文摘The peristaltic transport of viscous fluid in an asymmetric channel is concentrated. The channel walls exhibit convective boundary conditions. Both cases of hydrodynamic and magnetohydrodynamic(MHD) fluids are considered. Mathematical analysis has been presented in a wave frame of reference. The resulting problems are non-dimensionalized. Long wavelength and low Reynolds number approximations are employed. Joule heating effect on the thermal equation is retained. Analytic solutions for stream function and temperature are constructed. Numerical integration is carried out for pressure rise per wavelength. Effects of influential flow parameters have been pointed out through graphs. | Abbasi Fahad Munir Hayat Tasawar Ahmad Bashir | 2014 | Journal of Central South University2014，21，4： | 5 |
| 15 | 低温等离子体改性碳纳米管及其对U(Ⅵ)的吸附性能研究显示文摘采用低温等离子体法将O-磷酸乙醇胺(O-PEA)接枝到多壁碳纳米管表面(MWCNTs),并使用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、傅里叶变换红外光谱(FTIR)、X射线衍射(XRD)和拉曼光谱(Raman)表征改性前后的MWCNTs的物化性质.通过静态吸附实验研究改性碳纳米管对溶液中U(Ⅵ)的吸附容量,同时,还研究了吸附时间、pH、离子强度和温度对吸附性能的影响.结果表明,通过低温等离子体法改性后的MWCNTs(PTMWCNTs-4)对U(Ⅵ)的吸附性能最好,其吸附容量大约是未改性MWCNTs吸附量的3倍.改性后的MWCNTs吸附速率更快. PTMWCNTs-4对U(Ⅵ)的吸附在pH<7.0条件下不受离子强度影响,属于内层络合机理;而在pH>7.0条件下受离子强度影响,属于外层络合机理或离子交换.热力学数据表明,吸附过程放热且可自发进行.本文为U(Ⅵ)的有效去除提供了一种新型环保的改性方法. | 孙菊 王亚男 段升霞 Tasawar Hayat Ahmed Alsaedi 李家星 | 2019 | 中国科学:化学2019，49，1： | 5 |
| 16 | DYNAMICAL BEHAVIOR OF A STOCHASTIC HBV INFECTION MODEL WITH LOGISTIC HEPATOCYTE GROWTH显示文摘This paper is concerned with a stochastic HBV infection model with logistic growth. First, by constructing suitable stochastic Lyapunov functions, we establish sufficient conditions for the existence of ergodic stationary distribution of the solution to the HBVinfection model. Then we obtain sufficient conditions for extinction of the disease. The stationary distribution shows that the disease can become persistent in vivo. | 刘群 蒋达清 史宁中 Tasawar HAYAT Ahmed ALSAEDI | 2017 | Acta Mathematica Scientia2017，37，4： | 5 |
| 17 | Efficient elimination of environmental pollutants through sorption-reduction and photocatalytic degradation using nanomaterials显示文摘With the rapid development of industrial,large amounts of different inorganic and organic pollutants are released into the natural environments.The efficient elimination of environmental pollutants,i.e.,photocatalytic degradation of persistent organic pollutants into nontoxic organic/inorganic chemicals,in-situ solidification or sorption-reduction of heavy metal ions,is crucial to protect the environment.Nanomaterials with large surface area,active sites and abundant functional groups could form strong surface complexes with different kinds of pollutants and thereby could efficiently eliminate the pollutants from the aqueous solutions.In this review,wemainly focused on the recent works about the synthesis of nanomaterials and their applications in the efficient elimination of different organic and inorganic pollutants from wastewater and discussed the interaction mechanism from batch experimental results,the advanced spectroscopy techniques and theoretical calculations.The adsorption and the photocatalytic reduction of organic pollutants and the sorption/reduction of heavy metal ions are generally considered as the mainmethods to decrease the concentration of pollutants in the natural environment.This review highlights anew way for the real applications of novel nanomaterials in environmental pollution management,especially for the undergraduate students to understand the recent works in the elimination of different kinds of inorganic and organic chemicals in the natural environmental pollution management. | Njud SAlharbi Baowei Hu Tasawar Hayat Samar Omar Rabah Ahmed Alsaedi Li Zhuang Xiangke Wang | 2020 | Frontiers of Chemical Science and Engineering2020，14，6： | 5 |
| 18 | Nanoscale zero-valent iron/magnetite carbon composites for highly efficient immobilization of U(Ⅵ)显示文摘Nanoscale zerovalent iron/magnetic carbon(NZVI/MC) composites were successfully synthesized by simply calcining yellow pine and iron precursors. NZVI/MC pyrolyzed at 800°C(NZVI/MC800) had a higher percentage of NZVI and displayed better resistance to aggregation and oxidation of NZVI than samples prepared at other temperatures. The NZVI/MC800 material was applied for the elimination of U(Ⅵ) from aqueous solutions. The results suggested that the NZVI/MC800 displayed excellent adsorption capacity(203.94 mg/g)toward U(Ⅵ). The significant adsorption capacity and fast adsorption kinetics were attributed to the presence of well-dispersed NZVI, which could quickly reduce U(Ⅵ) into U(Ⅳ), trapping the guest U(Ⅳ) in the porous biocarbon matrix. The removal of U(Ⅵ) on the NZVI/MC samples was strongly affected by solution pH. The NZVI/MC samples also displayed outstanding reusability for U(Ⅵ) removal after multiple cycles. These findings indicate that NZVI/MC has great potential for remediation of wastewater containing U(Ⅵ). | Zhimin Lv Shimin Yang Lei Chen Ahmed Alsaedi Tasawar Hayat Changlun Chen | 2019 | Journal of Environmental Sciences2019，31，2： | 5 |
| 19 | Melting Heat in Radiative Flow of Carbon Nanotubes with Homogeneous-Heterogeneous Reactions显示文摘The present article provides mathematical modeling for melting heat and thermal radiation in stagnationpoint flow of carbon nanotubes towards a nonlinear stretchable surface of variable thickness. The process of homogeneousheterogeneous reactions is considered. Diffusion coefficients are considered equal for both reactant and autocatalyst.Water and gasoline oil are taken as base fluids. The conversion of partial differential system to ordinary differential system is done by suitable transformations. Optimal homotopy technique is employed for the solutions development of velocity, temperature, concentration, skin friction and local Nusselt number. Graphical results for various values of pertinent parameters are displayed and discussed. Our results indicate that the skin friction coefficient and local Nusselt number are enhanced for larger values of nanoparticles volume fraction. | Tasawar Hayat Khursheed Muhammad Taseer Muhammad Ahmed Alsaedi | 2018 | Communications in Theoretical Physics2018，69，4： | 4 |
| 20 | Synthesis of molybdenum disulfide/reduced graphene oxide composites for effective removal of Pb(Ⅱ) from aqueous solutions显示文摘In this work,a facile method was adopted to synthesize molybdenum disulfide/reduced graphene oxide(MoS_2/rGO) composites through an L-cysteine-assisted hydrothermal technique.The as-prepared MoS_2/rGO composites were firstly applied as adsorbents for efficient elimination of Pb(Ⅱ) ions.Batch adsorption experiments showed that the adsorption of Pb(Ⅱ) on MoS_2/rGO followed pseudo-second-order kinetic model well.The adsorption of Pb(Ⅱ) was intensely pH-dependent,ionic strength-dependent at pH < 9.0 and ionic strength-independent at pH > 9.0.The presence of humic acid(HA) enhanced Pb(Ⅱ)adsorption obviously.The MoS_2/rGO composites exhibited excellent adsorption capacity of384.16 mg g ~1 at pH 5.0 and T= 298.15 K,which was superior to MoS_2(279.93 mg g ~1) and many other adsorbents.The thermodynamic parameters suggested that the adsorption process of Pb(Ⅱ) on MoS_2/rGO composites was spontaneous(AG~θ < 0) and endothermic(AH~θ > 0).The interaction of Pb(Ⅱ) and MoS_2/rGO was mainly dominated by electrostatic attraction and surface complexation between Pb(Ⅱ) and oxygen-containing functional groups of MoS_2/rGO.This work highlighted the application of MoS_2/rGO as novel and promising materials in the efficient elimination of Pb(Ⅱ) from contaminated water and industrial effluents in environmental pollution management. | Yi Du Jian Wang Yidong Zou Wen Yao Jing Hou Liangshu Xia Anguo Peng Ahmed Alsaedi Tasawar Hayat Xiangke Wang | 2017 | Science Bulletin2017，62，13： | 4 |
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