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| 1 | Adsorption–desorption behavior of atrazine on agricultural soils in China显示文摘Adsorption and desorption are important processes that affect atrazine transport,transformation,and bioavailability in soils.In this study,the adsorption–desorption characteristics of atrazine in three soils(laterite,paddy soil and alluvial soil) were evaluated using the batch equilibrium method.The results showed that the kinetics of atrazine in soils was completed in two steps:a'fast' adsorption and a 'slow' adsorption and could be well described by pseudo-second-order model.In addition,the adsorption equilibrium isotherms were nonlinear and were well fitted by Freundlich and Langmuir models.It was found that the adsorption data on laterite,and paddy soil were better fitted by the Freundlich model;as for alluvial soil,the Langmuir model described it better.The maximum atrazine sorption capacities ranked as follows:paddy soil > alluvial soil > laterite.Results of thermodynamic calculations indicated that atrazine adsorption on three tested soils was spontaneous and endothermic.The desorption data showed that negative hysteresis occurred.Furthermore,lower solution pH value was conducive to the adsorption of atrazine in soils.The atrazine adsorption in these three tested soils was controlled by physical adsorption,including partition and surface adsorption.At lower equilibrium concentration,the atrazine adsorption process in soils was dominated by surface adsorption;while with the increase of equilibrium concentration,partition was predominant. | Lin Yue ChengJun Ge Dan Feng Huamei Yu Hui Deng Bomin Fu | 2017 | Journal of Environmental Sciences2017，29，7： | 16 |
| 2 | Self-reducing bifunctional Ni-W/SBA-15 catalyst for cellulose hydrogenolysis to low carbon polyols显示文摘A series of self-reducing bifunctional Ni-W/SBA-15 catalysts were synthesized using biomass-based carbon source as the reducing agent without conventional further reduction step. The self-reducing catalysts were performed on the hydrogenolysis of cellulose to low carbon polyols. The effects of calcination temperature and metallic loading contents for cellulose hydrogenolysis reaction were investigated detailedly.The optimal calcination temperature was found to be 673 K by TG analysis. The active metal nanoparticles with a better dispersion were observed using SEM and element mapping technology. The yield of low carbon polyols using the catalyst with the receipt of 10%Ni-15%W/SBA-15-673 K can reach as high as68.14%, of which the ethylene glycol(EG) accounts for 61.04%. | Zhuqian Xiao Qiuwei Ge Chuang Xing Chengjun Jiang Sheng Fang Jianbing Ji Jianwei Mao | 2016 | Journal of Energy Chemistry2016，25，3： | 3 |
| 3 | Minimum detectable activity for NaI(Tl) airborne γ-ray spectrometry based on Monte Carlo simulation显示文摘The determination of the effective minimum detectable activity(MDA)of radionuclides by a detection system plays an important role in environmental radiation monitoring.In this study,the responses of an NaI(Tl)airborne γ ray spectrometry(AGRS)system to different radionuclides(137Cs and 131I)were investigated using the Monte Carlo technique.The MDA values were determined under different conditions according to the counting spectra obtained from the Monte Carlo simulation.The equivalent mass thickness method was applied to the Monte Carlo modeling for monitoring ground radiation to reduce statistical uncertainty.The secondary source method was used to monitor both air and ground radiation.A quadratic relationship was found between the MDA and activity concentration.An exponential relationship was found between the MDA and altitude.The MDA of a specific radionuclide from external detectors was found to be superior to that obtained from internal detectors under the same conditions.The MDA values in an NaI(Tl)AGRS system under different conditions can be estimated based on the results of this study. | GONG ChunHui ZENG GuoQiang GE LiangQuan TANG Xiaobin TAN ChengJun | 2014 | Science China(Technological Sciences)2014，57，9： | 3 |
| 4 | Constructing built-in electric field in graphitic carbon nitride hollow nanospheres by co-doping and modified in-situ Ni_(2)P for broad spectrum photocatalytic activity显示文摘The construction of built-in electric field is generally considered as an effective strategy to enhance photocatalytic performance due to its significant role in charge separation.Herein,a built-in electric field within g-C_(3)N_4 hollow nanospheres co-doped with sulfur and oxygen and modified in-situ Ni_(2)P is proposed.Ni_(2)P/SO-HC_(3)N_4 exhibits significantly enhanced board spectrum photocatalytic properties for hydrogen precipitation(5.21 mmol h^(-1)g^(-1))and photocatalytic Cr(VI)reduction without the use of noble metal.It also achieves high photocatalytic sterilization activity and remarkable stability when used to completely inactivate E.coli(10~7)in 60 min under Vis-NIR light irradiation.The enhanced performance is attributed to the formation of a curved hollow sphere structure,which promotes the electron transfer between the inner and outer layers.In addition,co-doping inhibits the recombination of photogenerated carriers,and the built-in electric field recombined with Ni_(2)facilitates the electron transfer between the composite interfaces.This design strategy demonstrates an original method of devising multifunctional photocatalysts with enhanced activity and stability. | Linlin Zhang Wenxing Peng YaKun Li Rui Qin Dong Yue Chengjun Ge Jianjun Liao | 2021 | Journal of Materials Science & Technology2021，，31： | 0 |
| 5 | Stimuli-responsive combination therapy of cisplatin and Nrf2 siRNA for improving antitumor treatment of osteosarcoma显示文摘Cisplatin is a widely applied therapeutics for the treatment of osteosarcoma.However,its clinical applications have been hindered due to low efficacy and bioavailability,and particularly frequent emergence of reactive oxygen species(ROS)-decrease induced drug resistance.The transcription factor NF-E2-related factor 2(Nrf2)is increased in cancer patients and induces poor outcome in osteosarcoma treatment,making it a novel target to improve the efficacy of chemotherapy.Herein,a hyaluronidase-responsive multi-layer liposome(HLCN)for co-delivery of cisplatin and Nrf2 siRNA(siNrf2)is developed.It is composed of Vpr52-96 modified liposome covered with hyaluronic acid(HA).HLCN selectively accumulates in osteosarcoma by targeting tumor-specific CD44,and can be degraded by endosomal hyaluronidase to generate cationic liposome,which promotes the endosomal escape of Vpr52-96,cisplatin and siNrf2.HLCN can effectively decrease Nrf2 level,promote ROS generation,activate itochondrial apoptotic pathway,and consequently enhance anticancer efficacy of cisplatin.Particularly,HLCN shows high cytotoxicity to osteosarcoma cells with an IC50 value of about 1µM,which is four-fold lower than liposomal cisplatin(IC504µM),indicating that Nrf2 silence can significantly improve cisplatin sensitivity in cancer cells.Importantly,HLCN can remarkably inhibit tumor growth in the xenograft osteosarcoma mice with minimal systemic adverse effects.Therefore,this novel stimuli-responsive combination therapy of cisplatin and siNrf2 provides a promising strategy for the treatment of osteosarcoma. | Ting-Ting Gu Chengjun Li Yurui Xu Lei Zhang Xue Shan Xinyu Huang Leilei Guo Kerong Chen Xiaojian Wang Haixiong Ge Xinghai Ning | 2020 | Nano Research2020，13，3： | 0 |
| 6 | Cu single atoms embedded on hollow g-C_(3)N_(4)nanospheres with enhanced charge transfer and separation for efficient photocatalysis显示文摘Establishing an effective charge transfer mechanism in carbon nitride(g-C_(3)N_(4))to enhance its photocatalytic activity remains a limiting nuisance.Herein,the combination design of a single Cu atom with hollow g-C_(3)N_(4)nanospheres(Cu-N_(3)structure)has been proven to offer significant opportunities for this crucial challenge.Moreover,this structure endows two pathways for charge transfer in the reaction,namely,the N atoms in the three-dimensional planar structure are only bonded with a single Cu atom,and charge transfer occurs between the plane and the layered structure due to the bending of the interlayered g-C_(3)N_(4)hollow nanospheres.Notably,Cu-N_(3)and hollow nanosphere structures have been certified to greatly enhance the efficiency of photogenerated carrier separation and transfer between the layers and planes by ultrafast spectral analysis.As a result,this catalyst possesses unparalleled photocatalytic efficiency.Specifically,the hydrogen production rate up to 2040μmol h^(−1) g^(−1),which is 51 times that of pure C_(3)N_(4)under visible light conditions.The photocatalytic degradation performance of tetracycline and oxidation performance of benzene is also expressed,with a degradation rate of 100%,a conversion of 97.3%and a selectivity of 99.9%.This work focuses on the structure-activity relationship to provide the possibilities for the development of potential photocatalytic materials. | Linlin Zhang Jianjun Liao Yakun Li Wei Sun Chengjun Ge | 2024 | Chinese Chemical Letters2024，35，2： | 0 |
| 7 | Aerial RIS-aided physical layer security design for satellitecommunication among similar channels显示文摘Satellite communications and reconfigurable intelligent surface (RIS) are considered as twopromising technologies that can significantly improve the coverage and energy efficiency of futurewireless communication networks. The satellite communications security is often threatened dueto its broadcasting nature. To enhance the physical layer security (PLS) of satellite communications with channel similarity, an aerial RIS-aided dual full-duplex (DFD-ARIS) cooperative jamming method is presented in this paper. Specifically, unlike the existing works that relied onchannel difference, DFD-ARIS utilizes the channel similarity against the eavesdroppers with thehelp of ARIS. In addition, the power allocation is further studied in conjunction with the phasedesign of RIS to minimize the total power under the constraints of data rate, satellite powerlimitation and secrecy rate. Then, the closed-form solutions are achieved. Simulation results showthat the performance of the proposed scheme is superior to the traditional method. | Chengjun Jiang Chensi Zhang Leilei Mu Zhe Zhang Jianhua Ge | 2023 | Journal of Information and Intelligence2023，1，1： | 0 |
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