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| 1 | Determination of N-nitrosodimethylamine in drinking water by UPLC-MS/MS显示文摘The method for detecting N-nitrosodimethylamine(NDMA) in drinking water using ultra performance liquid chromatography(UPLC) coupled with tandem mass spectrometry(MS/MS) was improved by optimizing the clean-up procedure to remove the matrix interference in pretreatment process,and was then applied to a survey of NDMA in both raw and finished water samples from five water treatment plants in South China.The NDMA concentrations ranged from 4.7 to 15.1 ng/L in raw water samples,and from 4.68 to 46.9 ng/L in finished water.The NDMA concentration in raw water was found to be related with nitrite concentration,and during the treatment,the NDMA concentration increased following ozonation but decreased after subsequent activated carbon treatment. | Wanfeng Wang Jianying Hu Jianwei Yu Min Yang | 2010 | Journal of Environmental Sciences2010，22，10： | 16 |
| 2 | Enhanced remediation of Cr(Ⅵ)-contaminated groundwater by coupling electrokinetics with ZVI/Fe_(3)O_(4)/AC-based permeable reactive barrier显示文摘Although widely used in permeation reaction barrier(PRB)for strengthening the removal of various heavy metals,zero-valent iron(ZVI)is limited by various inherent drawbacks,such as easy passivation and poor electron transfer.As a solution,a synergistic system with PRB and electrokinetics(PRB-EK)was established and applied for the efficient removal of Cr(Ⅵ)-contaminated groundwater.As the filling material of PRB,ZVI/Fe_(3)O_(4)/activated carbon(ZVI/Fe_(3)O_(4)/AC)composites were synthesized by ball milling and thermal treatment.A series of continuous flow column experiments and batch tests was conducted to evaluate the removal efficiency of Cr(Ⅵ).Results showed that the removal efficiency of Cr(Ⅵ)remained above 93%even when the bed volume(BV)reached 2000 under the operational parameters(iron/AC mass ratio,2:1;current,5 m A).The mechanism of Cr(Ⅵ)removal by the PRB-EK system was revealed through field emission scanning electron microscopy images,X-ray diffraction,X-ray photoelectron spectroscopy,Fe^(2+) concentration,and redox potential(E h)values.The key in Cr(Ⅵ)reduction was the Fe^(2+)/Fe^(3+) cycle driven by the surface microelectrolysis of the composites.The application of an externally supplied weak direct current maintained the redox process by enhancing the electron transfer capability of the system,thereby prolonging the column lifetime.Cr(Ⅵ)chemical speciation was determined through sequential extraction,verifying the stability and safety of the system.These findings provide a scientific basis for PRB design and the in-situ remediation of Cr(Ⅵ)-contaminated groundwater. | Ruolin Cao Shiqing Liu Xinyu Yang Chunfeng Wang Yanbin Wang Wanfeng Wang Yunqing Pi | 2022 | Journal of Environmental Sciences2022，34，2： | 4 |
| 3 | Dealloying-constructed hierarchical nanoporous bismuth-antimony anode for potassium ion batteries显示文摘Bi-Sb alloys are appealing anode materials for potassium ion batteries(PIBs)but challenged by their enormous volumetric variation during operation.Herein,a facile one-step dealloying protocol was devised and utilized to prepare the Bi-Sb alloys that manifest an exotic bicontinuous hierarchical nanoporous(np)microstructure ideal for volume-change mitigation and K+transport percolation.The growth mechanism fostering the peculiar morphology of the np-(Bi,Sb)alloys was investigated and clarified via operando X-ray(XRD)and ex-situ scanning electron microscopy(SEM).In particular,the np-Bi6Sb2 electrode,optimized for comprehensive electrochemical performance,achieves decent reversible capacities and a superior lifespan,as benchmarked with the monometallic references and other Bi-Sb alloy electrodes.The(de)potassiation mechanism of the np-(Bi,Sb)alloys was studied by operando XRD and further rationalized by density functional theory(DFT)calculations,whereby a homogeneous(segregation-free)and robust two-step electrochemically-driven phase transformations’catenation of(Bi,Sb)↔K(Bi,Sb)2↔K3(Bi,Sb)was reliably established to substantiate the outstanding reversibility of the np-(Bi,Sb)anodes in PIBs. | Hui Gao Kuibo Yin Zhiyuan Guo Ying Zhang Wensheng Ma Wanfeng Yang Ke Sun Zhangquan Peng Zhonghua Zhang | 2021 | Fundamental Research2021，1，4： | 2 |
| 4 | Feature Combination For Speaker Identification显示文摘 | Zhang Wanfeng Wu Zhaohui Yang Yingchun | 2003 | 21 (3):10-152003，21，3： | 1 |
| 5 | A H_(2)O-in-zircon perspective on the heterogeneous water content of crust-derived magmas in southern Tibet显示文摘Geophysical and geochemical evidence revealed that certain amounts of water are stored in the Earth’s interior,and its distribution exhibits temporal and spatial differences.Recent studies indicate that the H_(2)O-in-zircon has a potential to reveal magma water content.Using secondary ion mass spectrometry(SIMS),we analyzed the zircon water content and oxygen isotopes in granitoids(two-mica granite,quartz monzonite,diorite,and granodiorite)from southern Tibet.The results are used to explore the diversity of water content in crust-derived magmas,which is also supported by the LA-ICPMS zircon trace element analysis.There are low zircon water contents for two partial melting products of the ancient crust(peak at 85 and300 ppm,respectively).Meanwhile,there are high H_(2)O-in-zircon peaks(435 and 475 ppm,respectively)for two partial melting products of the juvenile crust.The calculated radiation damage accumulation in these zircon grains is below 3×10^(15)αdecay events mg^(–1),suggesting that the zircon grains are well crystalline.There is no correlation between REE+Y and H+P,indicating that the mechanism of charge balance for water uptaking into zircon,in which the excess of REE+Y to P controls Hcontent,is not applicable to the studied samples.The degree of magma fractionation cannot account for the zircon water content variation,because there is no co-variation between zircon Hf and H_(2)O contents.Similarly,the degree of partial melting was unlikely to be responsible for the H_(2)O-in-zircon distinction.We interpret that the H_(2)O-in-zircon variation reflects the influence of melting mode(dehydration vs.water-fluxed)and water content in the crustal source.In the Late Devonian,dehydration melting of the crustal rocks was facilitated at elevated temperatures,which produced magmas with the lowest water contents.Water-fluxed melting of the ancient crust would produce relatively“drier”magma than water-fluxed melting of the juvenile crust. | Juntong MENG Xiaoping XIA Lin MA Ziqi JIANG Jian XU Zexian CUI Qing YANG Wanfeng ZHANG Le ZHANG | 2021 | Science China Earth Sciences2021，64，7： | 1 |
| 6 | Identification and molecular characterization of twin-arginine translocation system (Tat) in Xanthomonas oryzae pv. oryzae strain PXO99显示文摘 | Lei Chen Baishi Hu Guoliang Qian Chen Wang Wanfeng Yang Zhicheng Han Fengquan Liu | 2009 | Archives of Microbiology2009，，2： | 1 |
| 7 | Tungsten diselenide nanoplates as advanced lithium/ sodium ion electrode materials with different storage mechanisms显示文摘转变金属 dichalcogenides (TMD ) 由于他们的像三明治的分层的结构作为 lithium/ 钠离子电极材料展出巨大的潜力。优化他们的 lithium/sodium-storage 表演,二个问题应该被处理:根本上理解发生在 TMD 电极和发展中的新奇 TMD 的化学反应。在这研究, WSe 2 六角形的 nanoplates 作为 lithium/sodium-ion 被综合电池(解放 / 亲族) 电极材料。为解放, WSe 2-nanoplate 电极完成了一个稳定的可逆能力和高率能力,以及多达 1,500 的 ultralong 周期生活在 1,000 妈敢楬杮瀠潲散畤敲 ? 牯猠煥敵据 ? | Wanfeng Yang Jiawei Wang Conghui Si Zhangquan Peng Zhonghua Zhang | 2017 | Nano Research2017，10，8： | 0 |
| 8 | Phase-boundary regulation boosting electrochemical reactivity of tin-based anodes for magnesium-ion batteries显示文摘Tin(Sn)-based materials are promising anodes for magnesium-ion batteries(MIBs) owing to their low reaction voltages, high theoretical specific capacities and good compatibility with conventional electrolytes. However, relatively arduous alloying reaction and sluggish diffusion kinetics limit their practical applications. Herein, we proposed a general strategy to regulate the electrochemical reactivity and performance of Sn-based anodes for Mg storage through the introduction of the second phase and phase boundary. The biphase Sn–Al, Sn–Pb and Sn–Zn O films were further fabricated via magnetron co-sputtering. Taking Sn–Al as an example, it has been revealed that the introduction of Al can effectively stimulate the electrochemical reaction of Sn with Mg in either nanoscale or bulk through combining experiments with density-functional theory calculations. Specially, the rolled Sn–Al electrode exhibits superior long-term stability over 5,000 cycles. Additionally, the Mg-storage mechanism of the Sn–Al electrode was investigated by operando X-ray diffraction. The Sn–Al anodes also demonstrate good compatibility with simple Mg-salt-based electrolytes like Mg(TFSI)2in full cells. More importantly, it has been authenticated that the activation effect of second phase and phase boundary to Sn is also applicable to Pb and Zn O. Our findings may provide a favorable reference for the development of alloy-type anodes for MIBs. | Meijia Song Yan Wang Conghui Si Wenrun Cui Wanfeng Yang Guanhua Cheng Zhonghua Zhang | 2022 | Science China Chemistry2022，65，7： | 0 |
| 9 | Scalable fabrication of antimony nanoparticles confined in a porous carbon framework for high-performance sodium-ion batteries显示文摘Engineering of carbon/metal nanocomposites with small metal particles is promising for the development of alloy-type anodes.Herein,an Sb@C composite was developed from a commercial potassium antimony tartrate precursor using a scalable pyrolysis method.Ultrafine Sb nanoparticles are confined within a porous carbon framework,which substantially facilitates the diffusion of Na-ion/electrons and effectively alleviates the charg-ing/discharging induced volume change.The obtained Sb@C material displays excellent electrochemical perfor-mance for Na^(+) storage.The Na^(+) diffusion behavior of Sb@C was comprehensively investigated using various methods,and its gas evolution during the discharge/charge was monitored via online mass spectrometry.Then,Sb@C was assembled into full cells.During discharge/charge processes,the Na_(3)V_(2)(PO_(4))_(2)F_(3)/Sb@C full cells de-livered a competitive working voltage of 2.95 V and a capacity retention of 93.4%(50 cycles@0.2 A g^(−1)).Considering its facile preparation method from a commercial precursor,the Sb@C composite can potentially realize a large-scale application of sodium-ion batteries. | Wensheng Ma Wanfeng Yang Weimin Wang Qingguo Bai Zhonghua Zhang | 2022 | ChemPhysMater2022，1，2： | 0 |
| 10 | Liquid metal assisted regulation of macro-/micro-structures and mechanical properties of nanoporous copper显示文摘Nanoporous metals have received significant attention as a new class of structural and functional materials.However,the macroscopic brittle fracture under the tensile test is an impediment to their practical applications.Thus,it is of central importance to develop nanoporous materials with low cost and high tensile ductility.Herein,a nanoporous Cu film supported on a pure Cu substrate(NPC@Cu)was fabricated by utilizing a liquid Ga assisted alloying-dealloying strategy,and the thickness of NPC film can be precisely regulated by changing the mass loading of liquid Ga.In-situ X-ray diffraction was performed to further explore the alloying/dealloying mechanisms.The NPC@Cu films show good tensile mechanical properties with a minimum elongation of 13.5%,which can be attributed to the good interface bonding and certain modulus matching between the nanoporous Cu layer and the Cu substrate.Our findings demonstrate that the design of film-substrate structure provides a feasible strategy for enhancing the mechanical properties of nanoporous metals. | ZHANG Ying BAI QingGuo YANG WanFeng ZHANG ZhongHua | 2021 | Science China(Technological Sciences)2021，64，10： | 0 |
| 11 | Dealloying-induced dual-scale nanoporous indium-antimony anode for sodium/potassium ion batteries显示文摘InSb alloy is a promising candidate for sodium/potassium ion batteries(SIBs/PIBs)but challenged with achieving high performance by dramatic volumetric changes.Herein,nanoporous(np)-InSb with dualscale phases(cubic/hexagonal(C/H)-InSb)was fabricated by chemical dealloying of ternary Mg-In-Sb precursor.Operando X-ray diffraction(XRD)and ex-situ characterizations well rationalize the dealloying/alloying mechanisms and the formation of dual-scale microstructures/phases.As an anode for SIB/PIBs,the np-InSb electrode exhibits superior reversible capacities and lifespan compared with the monometallic porous(p)-In electrode,stemming from the dealloying-induced dual-scale nanoporous architecture and alloying strategy with proper composition.The operando XRD results demonstrate that the(de)sodiated mechanism of the np-InSb electrode involves a two-step(de)alloying process,while the(de)potassiated mechanism is associated with a full electrochemically-driven amorphization upon cycling.Additionally,the gas evolution during the(dis)charge process was monitored by on-line mass spectrometry. | Hui Gao Yan Wang Zhiyuan Guo Bin Yu Guanhua Cheng Wanfeng Yang Zhonghua Zhang | 2022 | Journal of Energy Chemistry2022，，12： | 0 |
| 12 | Tailoring MXene Thickness and Functionalization for Enhanced Room‑Temperature Trace NO_(2) Sensing显示文摘In this study,precise control over the thickness and termination of Ti3C2TX MXene flakes is achieved to enhance their electrical properties,environmental stability,and gas-sensing performance.Utilizing a hybrid method involving high-pressure processing,stirring,and immiscible solutions,sub-100 nm MXene flake thickness is achieved within the MXene film on the Si-wafer.Functionalization control is achieved by defunctionalizing MXene at 650℃ under vacuum and H2 gas in a CVD furnace,followed by refunctionalization with iodine and bromine vaporization from a bubbler attached to the CVD.Notably,the introduction of iodine,which has a larger atomic size,lower electronegativity,reduce shielding effect,and lower hydrophilicity(contact angle:99°),profoundly affecting MXene.It improves the surface area(36.2 cm^(2) g^(-1)),oxidation stability in aqueous/ambient environments(21 days/80 days),and film conductivity(749 S m^(-1)).Additionally,it significantly enhances the gas-sensing performance,including the sensitivity(0.1119Ωppm^(-1)),response(0.2% and 23%to 50 ppb and 200 ppm NO_(2)),and response/recovery times(90/100 s).The reduced shielding effect of the–I-terminals and the metallic characteristics of MXene enhance the selectivity of I-MXene toward NO2.This approach paves the way for the development of stable and high-performance gas-sensing two-dimensional materials with promising prospects for future studies. | Muhammad Hilal Woochul Yang Yongha Hwang Wanfeng Xie | 2024 | Nano-Micro Letters2024，16，5： | 0 |
| 13 | Self-templating synthesis and structural regulation of nanoporous rhodium-nickel alloy nanowires efficiently catalyzing hydrogen evolution reaction in both acidic and alkaline electrolytes显示文摘Highly active and stable electrocatalysts to produce hydrogen through water splitting are crucial for clean energy systems but are still challenging.Herein,a novel self-templating strategy was proposed to synthesize one-dimensional nanoporous RhNi alloy nanowires through combining metallurgical eutectic solidification and microalloying with chemical dealloying.In-situ X-ray diffraction and ex-situ characterizations reveal that the Al matrix served as a template to guide the growth of the Al3(Ni,Rh)nanowires during eutectic solidification of Al-Ni-Rh precursor and was completely removed in the dealloying process.Meanwhile,the nanowire morphology could be well retained and the dealloying of Al_(3)(Ni,Rh)led to the formation of nanoporous RhNi alloy nanowires.The length scale of the RhNi nanowires could be facilely regulated by changing the solidification conditions.More importantly,the RhNi catalysts show excellent electrocatalytic activity and stability towards hydrogen evolution reaction in both acidic and alkaline media,which has been rationalized by density functional theory calculations. | Zhihua Zhai Yan Wang Conghui Si Pan Liu Wanfeng Yang Guanhua Cheng Zhonghua Zhang | 2023 | Nano Research2023，16，2： | 0 |
| 14 | Robot-aided fN∙m torque sensing within an ultrawide dynamic range显示文摘In situ scanning electron microscope(SEM)characterization have enabled the stretching,compression,and bending of micro/nanomaterials and have greatly expanded our understanding of small-scale phenomena.However,as one of the fundamental approaches for material analytics,torsion tests at a small scale remain a major challenge due to the lack of an ultrahigh precise torque sensor and the delicate sample assembly strategy.Herein,we present a microelectromechanical resonant torque sensor with an ultrahigh resolution of up to 4.78 fN∙m within an ultrawide dynamic range of 123 dB.Moreover,we propose a nanorobotic system to realize the precise assembly of microscale specimens with nanoscale positioning accuracy and to conduct repeatable in situ pure torsion tests for the first time.As a demonstration,we characterized the mechanical properties of Si microbeams through torsion tests and found that these microbeams were five-fold stronger than their bulk counterparts.The proposed torsion characterization system pushes the limit of mechanical torsion tests,overcomes the deficiencies in current in situ characterization techniques,and expands our knowledge regarding the behavior of micro/nanomaterials at various loads,which is expected to have significant implications for the eventual development and implementation of materials science. | Shudong Wang Xueyong Wei Haojian Lu Ziming Ren Zhuangde Jiang Juan Ren Zhan Yang Lining Sun Wanfeng Shang Xinyu Wu Yajing Shen | 2021 | Microsystems & Nanoengineering2021，7，1： | 0 |
| 15 | Bioinformatic identification of key genes and pathways that may be involved in the pathogenesis of HBV-associated acute liver failure显示文摘In order to explore the molecular mechanisms behind the pathogenesis of acute liver failure(ALF)associated with hepatitis B virus(HBV)infection,the present study aimed to identify potential key genes and pathways involved using samples from patients with HBV-associated ALF.The GSE38941 array dataset was downloaded from the Gene Expression Omnibus database,and differentially expressed genes(DEGs)between 10 liver samples from 10 healthy donors and 17 liver specimens from 4 patients with HBV-associated ALF were analyzed using the Linear Models for Microarray Data package.Gene Ontology and KEGG pathway enrichment analyses of the DEGs were performed,followed by functional annotation of the genes and construction of a proteineprotein interaction(PPI)network.Subnetwork modules were subsequently identified and analyzed.In total,3142 DEGs were identified,of which 1755 were upregulated and 1387 were downregulated.The extracellular exosome,immune response,and inflammatory response pathways may potentially be used as biomarkers of ALF pathogenesis.In total,17 genes(including CCR5,CXCR4,ALB,C3,VGEFA,and IGF1)were identified as hub genes in the PPI network and may therefore be potential marker genes for HBV-associated ALF. | Yalan Yang Zhaohui Zhong Yubin Ding Wanfeng Zhang Yang Ma Li Zhou | 2018 | Genes & Diseases2018，5，4： | 0 |
| 16 | Duplex PCR Detection of Pseudomonas savastanoi pv.phaseolicola and Curtobacterium flaccumfaciens pv,flaccumfaciens in Soybean显示文摘The paper aimed to establish a duplex PCR method for simultaneous detection of Pseudomonas savastanoi pv. Phaseolicola (Psp) and Curtobacterium flaccumfaciens pv. Flaccumfaciens (Cff). Based on the argK gene of Psp in GenBank,the primers PSPF1 / PSPR2 were designed. The duplex PCR assay was developed using the combined primers PSPF1 / PSPR2 and CffF1 / CffR2,which were specific primers for Cff. The reaction conditions were optimized and specificity and sensitivity of the duplex PCR were tested. The expected DNA fragment was specifically amplified from the genomic DNA of Psp and Cff. Specificity was confirmed in the artificially inoculated soybean samples imported. Thus,the duplex PCR developed in this study could be used for the simultaneous detection of Psp and Cff from imported soybean. | Liu Yan Yang Wanfeng Liu Xiang Shao Peize Chen Yunqing Zhao Wenjun | 2016 | Plant Diseases and Pests2016，7，1： | 0 |
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