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Surface-modified ag@Ru-P25 for photocatalytic CO_(2) conversion with high selectivity over CH_(4) formation at the solid–gas interface

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Carbon Energy 2024年第1期6卷 182-196页

作者： Chaitanya B.Hiragond Sohag Biswas Niket SPowar Junho Lee Eunhee Gong Hwapyong Kim Hong Soo Kim Jin-Woo Jung Chang-Hee Cho Bryan M.Wong Su-Il In Department of Energy Science&Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea Department of Chemical&Environmental Engineering Materials Science&Engineering ProgramDepartment of ChemistryDepartment of Physics&AstronomyUniversity of California-RiversideRiversideCaliforniaUSA Department of Physics and Chemistry Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea NiceScience Corporation DaeguRepublic of Korea

Systematic optimization of the photocatalyst and investigation of the role of each component is important to maximizing catalytic activity and comprehending the photocatalytic conversion of CO_(2) reduction to solar fuels.A surface-modified ag@Ru-P25 photocatalyst with H_(2)O_(2) treatment was designed in this study to convert CO_(2) and H_(2)O vapor into highly selective *** doping followed by ag nanoparticles(NPs)cocatalyst deposition on P25(TiO_(2))enhances visible light absorption and charge separation,whereas H_(2)O_(2) treatment modifies the surface of the photocatalyst with hydroxyl(–OH)groups and promotes CO_(2) ***-resonance transmission electron microscopy,X-ray photoelectron spectroscopy,X-ray absorption near-edge structure,and extended X-ray absorption fine structure techniques were used to analyze the surface and chemical composition of the photocatalyst,while thermogravimetric analysis,CO_(2) adsorption isotherm,and temperature programmed desorption study were performed to examine the significance of H_(2)O_(2) treatment in increasing CO_(2) reduction *** optimized ag1.0@Ru1.0-P25 photocatalyst performed excellent CO_(2) reduction activity into CO,CH4,and C2H6 with a~95%selectivity of CH4,where the activity was~135 times higher than that of pristine TiO_(2)(P25).For the first time,this work explored the effect of H_(2)O_(2) treatment on the photocatalyst that dramatically increases CO_(2) reduction activity.

关键词： gas-phase CO_(2) reduction H_(2)O_(2) treatment plasmonic nanoparticles solar fuel photocatalyst surface modification

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Fabrication of Molecularly Imprinted Electrospun Nanofibers with Mono-amidoxime Functional Ligand for Efficient Decontamination of Toxic Organophosphates

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Chinese Journal of Polymer Science 2024年第4期42卷 446-456页

作者： Lan Wang Peng Jiang Ya-Lin Niu Jun-Peng Cao Tian-Ying Guo Key Laboratory of Functional Polymer Materials Ministry of EducationInstitute of Polymer ChemistryCollege of Chemistry and Frontier Science Center for the Creation of New Organic SubstancesNankai UniversityTianjin300071China

There is an urgent imperative to discover practical and efficacious artificial catalysts for the expeditious decontamination of toxic organophosphates. Herein, we propose a novel molecularly imprinted approach utilizing electrospun fiber scaffolds. Specifically, an amidoxime-based functional polymer (PMAOX) has been synthesized, which contains amidoxime groups that can act as nucleophiles and ligands for the formation of catalytic active sites. This polymer was blended with polyacrylonitrile (PAN), a well-processable material, to prepare a nanofiber mat using electrospinning techniques. Then, the amidoxime side groups on fiber surface were further cross-linked after the molecular coordination of templates to complete the molecularly imprinting process. This approach can not only enhance the content of functional molecularly imprinted polymers without affecting structural stability, but also combines surface MI technology to fully expose and leverage the advantages of active sites. The as prepared molecularly imprinted electrospun nanofibers MIF-Zn-PMAOX/PAN-6/4 catalyzes the degradation of paraoxon with a half-life of 32 min, and MIF-ag-PMAOX/PAN catalyzes the degradation of parathion with a half-life of 18 min. The maximum catalytic rate evidence rate enhancements nearly 3700-fold of the self-hydrolysis. Thus, the mono-amidoxime based molecularly imprinted fibers demonstrate the versatility and superiority as self-detoxifying for organophosphates.

关键词： Organophosphateshydrolysis Electrospinning Molecular imprinting

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生物启发膜在水系镁离子电池阴极的界面工程

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Science China Materials 2024年第8期67卷 2558-2566页

作者：洛古子呷苟倩志罗号燃陈昭宇邓江斌王凯鑫何玉婷李英芳王磊张奔郑玉杰李猛 National Innovation Center for Industry-Education Integration of Energy Storage Technology Xuefeng Mountain Energy Equipment Safety National Observation and Research StationMOE Key Laboratory of Low-Grade Energy Utilization Technologies and SystemsCQU-NUS Renewable Energy Materials&Devices Joint LaboratoryCollege of Energy&Power EngineeringChongqing UniversityChongqing 400044China Chongqing Windmagics Weichu Energy Co. Ltd.Chongqing 401121China Southwest Technology and Engineering research institute Chongqing 400039China

受到水合镁离子的高脱溶能垒和不良界面水分解行为的限制,水系镁离子电池通常受制于缓慢的离子传输动力学和严重的阴极溶解.为了克服这些障碍,受细胞膜两亲性结构的启发,我们成功构建了一种由疏水性聚(3,4-乙二氧基噻吩)(PEDOT)和亲水性... 详细信息

受到水合镁离子的高脱溶能垒和不良界面水分解行为的限制,水系镁离子电池通常受制于缓慢的离子传输动力学和严重的阴极溶解.为了克服这些障碍,受细胞膜两亲性结构的启发,我们成功构建了一种由疏水性聚(3,4-乙二氧基噻吩)(PEDOT)和亲水性α-MnO_(2)基底组成的MnO_(2)碳基阴极.结合实验和理论计算结果分析,PEDOT层可以有效提高整体电极的导电性,降低水合Mg^(2+)的脱溶能垒,并抑制阴极溶解,从而提高复合电极的性能.因此,本文所制备的复合电极表现出优越的速率性能(58.4mA hg^(-1),3ag^(-1))和增强的长期循环稳定性(1000个循环后85.92mA hg^(-1),2ag^(-1)),优于原始的α-MnO_(2)阴极.这项基于生物启发设计理念的工作将为水合镁离子电池的发展提供创新方向.

关键词：镁离子电池复合电极生物启发传输动力学循环稳定性界面工程脱溶能垒

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Apolipoprotein A-I binding protein-mediated neuroprotection in glaucomatous neuroinflammation and neurodegeneration

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Neural Regeneration research 2025年第5期20卷 1414-1415页

作者： Sinwoo Hwang Seunghwan Choi Soo-Ho Choi Keun-Young Kim Yury I.Miller Won-Kyu Ju Hamilton Glaucoma Center and Shiley Eye institute The Viterbi Family Department of OphthalmologyUniversity of California San DiegoLa JollaCAUSA Department of Medicine University of California San DiegoLa JollaCAUSA National Center for Microscopy and Imaging research Department of NeurosciencesUniversity of California San DiegoLa JollaCAUSA

Glaucoma is a multifactorial eye disorder that can cause vision loss and irreversible blindness,affecting individ uals aged 40 to 80 yea rs *** to the aging population,it is expected that the number of people affected by glaucoma will surpass 111 million by 2040 as the disease becomes more *** primarily contributes to optic nerve axon loss and the progressive degeneration of retinal ganglion cells (RGCs),subsequently leading to vision impairment.

关键词： irreversible pass primarily

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Hot cracking susceptibility of AlSi7MgCu alloys and effects of alloying elements magnesium and copper

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China Foundry 2013年第4期10卷 248-253页

作者： Thomas Pabel Salar Bozorgi Christian Kneissl Katharina Faerber Peter Schumacher Austrian Foundry research institute Chair of Casting research Metallurgy DepartmentUniversity of Leoben LKR Leichtmetallkompetenzzentrum Ranshofen GmbH Pankl Racing Systems ag

Hot cracking during solidification can be a serious problem in aluminium casting alloys under certain *** feature is well known,but still insuffi ciently investigated in shape *** study gives a brief overview of the factors inf luencing hot cracking during shape *** different AlSi7MgCu alloys with varying Mg and Cu contents were *** models,including the cracking susceptibility coeffi cient(CSC)from Clyne and Davies,were *** calculations(terminal freezing range,TFR)of the behavior of the solid fraction during solidif ication were compared to an experimentbased hot cracking indexing(HCI)*** electron microscopy(SEM)was used to compare the existing microstructure and precipitated thermodynamic phases using the software ThermoCalc Classic(TCC).Furthermore,SEM was used to investigate crack surfaces initiated by a dog-bone shaped mold during casting.A good correlation between theoretical models and the experimental hot cracking index method was observed.

关键词： hot cracking susceptibility terminal freezing range cracking susceptibility coefficient hot cracking index

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Advanced Nanocomposite Arabic Gum Polyacrylic Acid Hydrogels for Flexible Supercapacitors

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Journal of Renewable Materials 2024年第7期12卷 1219-1236页

作者： Borhan Albiss Asala Saleh Nanotechnology institute Jordan University of Science and TechnologyP.O.Box 3030Irbid22110Jordan

In this work,the fabrication and characterization of the nanocomposite hydrogel,as a solid electrode in electro-chemical cell and gel electrolyte material using Indium titanium oxide/polyethylene terephthalate(ITO/PET)ﬂex-ible substrate for double-layer supercapacitors have been *** nanocomposite hydrogel composed of Arabic gum(ag),Acrylic acid(AA),reduced graphene oxide(RGO),and silver nanoparticles(agNPs)was fab-ricated via a physical cross-linked polymerization reaction,in which the ascorbic acid was used as a reducing agent to generate agNPs and to convert Graphene oxide(GO)to RGO during the polymerization *** morphology and structural characteristics of nanocomposite hydrogel were investigated using atomic force microscopy(AFM),scanning electron microscope(SEM),Fourier transfer infrared(FTIR),and X-rayﬂuores-cence(XRF).Additionally,the effect of RGO and agNPs on hydrogel stability was assessed through Thermogra-vimetric analysis(TGA)and differential scanning calorimetry(DSC),while its mechanical properties were studied using the nanoindentation *** impedance spectroscopy(EIS),and cyclic voltammetry(CV)were also conducted to study the electrochemical properties of the prepared *** effects of agNPs,RGO,and water content were all considered in the study of supercapacitor *** microstructural tests showed that the nanocomposite hydrogel has a relatively high swelling rate,which has a crucial effect on the ***,the effects of increasing agNP concentration and water content in the hydrogel matrix showed a signiﬁcant improvement in its electrochemical performance,compared with that for Arabic gum poly acrylic acid(agPAA)hydrogel itself,were the speciﬁc capacitance exhibited a signiﬁcant enhancement,convert-ing from a low value to a substantially higher capacitance ***,when the nanocomposite hydrogel was used as the working electrode in an electrochemical cell with a hydrochloric acid

关键词： Supercapacitor energy harvesting nanocomposite hydrogel reduced graphene oxide

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The new kid on the block in insect pest management:sprayable RNAi goes commercial

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Science China(Life Sciences) 2024年第8期67卷 1766-1768页

作者： Junjie Yan Ralf Nauen Stuart Reitz Andrei Alyokhin Jiang Zhang David Mota-Sanchez Yonggyun Kim Subba Reddy Palli Silvia I.Rondon Brian A.Nault Juan Luis Jurat-Fuentes Michael S.Crossley William E.Snyder Angharad M.R.Gatehouse Myron P.Zalucki Bruce E.Tabashnik Yulin Gao State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Bayer ag Crop Science DivisionR&DPest ControlMonheim 40789Germany Department of Crop and Soil Science Oregon State UniversityOntario 97914USA School of Biology and Ecology University of MaineOrono 04469USA Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China Department of Entomology Michigan State UniversityEast Lansing 48864USA Department of Plant Medicals Andong National UniversityAndong 36729Republic of Korea Department of Entomology University of KentuckyLexington 40503USA Oregon State University Oregon Integrated Pest Management CenterCorvallis 97838USA Department of Entomology Cornell UniversityCornell AgriTechGeneva 14456USA Department of Entomology and Plant Pathology University of TennesseeKnoxville 37996USA Department of Entomology and Wildlife Ecology University of DelawareNewark 19716USA Department of Entomology University of GeorgiaAthensGeorgia 30602USA School of Natural and Environmental Sciences Newcastle UniversityNewcastle upon TyneNE17RUUK School of the Environment University of QueenslandBrisbane 4072Australia Shandong Engineering research Center for Environment-Friendly agricultural Pest Management College of Plant Health and MedicineQingdao Agricultural UniversityQingdao 266109China Department of Entomology University of ArizonaTucson 85721USA National Center of Excellence for Tuber and Root Crop research Chinese Academy of Agricultural SciencesBeijing 100081China

Insect pest damage to crops is a threat to global food security(Tilman et al.,2011).Climate change,the evolution of insecticide resistance,and the phasing out of insecticides due to environmental and safety concerns exacerbate this *** urgently need safe and effective crop protection tools to sustainably generate yields that meet ever-increasing global demand.

关键词： crops damage pest

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Photo-induced ag modulating carbon dots:Greatly improved fluorescent properties and derived sensing application

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Chinese Chemical Letters 2024年第1期35卷 338-342页

作者： Yuwei Wang Ye Li Guixiang Yang Xiaofeng Yang Chenglu Yan Huaqiao Peng Huiyong Wang Juan Du Baozhan Zheng Yong Guo Department of Chemistry Sichuan UniversityChengdu 610064China institute of Quality Standard and Testing Technology for agro-products Sichuan Academy of Agricultural SciencesChengdu 610066China Key Laboratory of Aviation Fuel&Chemical Airworthiness and Green Development The Second Research Institute of Civil Aviation Administration of ChinaChengdu 610041China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

Carbon dots(CDs)have been attracted much attention and widely studied due to their excellent fluorescence(FL)properties,better biocompatibility and outstanding photo/chemical ***,the disadvantage of lower quantum yield(QY)still limits its wide ***,we reported a novel and convenient strategy to prepare photo-induced ag/CDs(p-ag/CDs)by irradiating the mixed ag+and hydrophobic CDs(h-CDs)acetone solution with ultraviolet(UV)*** obtained p-ag/CDs exhibit a greatly enhanced FL emission together with a blue shift(460 nm)than h-CDs(520 nm).The QY of p-ag/CDs is measured to be 51.1%,which is 10.4 times higher than that of h-CDs(4.9%),indicating that photo-induced ag modulation can effectively improve the optical properties of *** mechanisms for the FL enhancement and blue shift of h-CDs are studied in *** results prove that the greatly enhanced FL emission is from the generated ag nanoparticles(agNPs)by UV light irradiation based on metal-enhanced fluorescence(MEF),and the increased oxygen-contained groups in this process lead to the blue shift in CDs ***,the p-ag/CDs exhibit higher sensitivity and selectivity for sulfide ions(S2-)detection than that of h-CDs,which have a lower response to S2-.This work not only offers a novel strategy to improve the FL properties of materials but also endows them with new functions and broadens their application fields.

关键词： Carbon dots Photo-induced ag modulating Fluorescent enhancement High quantum yield Derived sensing application Sulfide determination

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A high-speed true random number generator based on ag/SiNx/n-Si memristor

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Frontiers of physics 2024年第1期19卷 241-250页

作者： Xiaobing Yan Zixuan Zhang Zhiyuan Guan Ziliang Fang Yinxing Zhang Jianhui Zhao Jiameng Sun Xu Han Jiangzhen Niu Lulu Wang Xiaotong Jia Yiduo Shao Zhen Zhao Zhenqiang Guo Bing Bai institute of Life Science and Green Development Key Laboratory of Brain-Like Neuromorphic Devices and Systems of Hebei ProvinceCollege of Electron and Information EngineeringHebei UniversityBaoding 071002China

The intrinsic variability of memristor switching behavior can be used as a natural source of randomness,this variability is valuable for safe applications in hardware,such as the true random number generator(TRNG).However,the speed of TRNG is still be further ***,we propose a reliable ag/SiNx/n-Si volatile memristor,which exhibits a typical threshold switching device with stable repeat ability and fast switching *** volatile-memristor-based TRNG is combined with nonlinear feedback shift register(NFSR)to form a new type of high-speed dual output ***,the bit generation rate reaches a high speed of 112 kb/*** addition,this new TRNG passed all 15 National institute of Standards and Technology(NIST)randomness tests without post-processing steps,proving its performance as a hardware security *** work shows that the SiNx-based volatile memristor can realize TRNG and has great potential in hardware network security.

关键词： volatile memristor true random number generator(TRNG) delay time threshold switching device

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Insecticide resistance in Bemisia tabaci from Cyprus

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Insect Science 2011年第1期18卷 30-39页

作者： Vassilis Vassiliou Maria Emmanouilidou Andreas Perrakis Evangelia Morou John Vontas Anastasia Tsagkarakou Emmanouil Roditakis agricultural research institute Nicosia Cyprus Faculty of Biotechnology and Appfied Biology Department of Biology University of Crete Herakfion Greece National agricultural research Foundation (N.ag.RE.F.) Plant Protection Institute of Heraklion Heraklion Greece

A comprehensive study on the Bemisia tabaci （biotype B） resistance to neonicotinoid insecticides imidacloprid, acetamiprid and thiamethoxam, and pyrethroid bifenthrin was conducted in Cyprus. The resistance level to eight field-collected B. tabaci populations was investigated. The activities of enzymes involved in metabolic detoxification and the frequencies ofpyrethroid and organophosphates target site resistance mutations were determined. Moderate to high levels of resistance were detected for imidacloprid （re- sistance factor [RF] 77-392） and thiamethoxam （RF 50-164） while low resistance levels were observed for acetamiprid （RF 7-12）. Uniform responses by the Cypriot whiteflies could be observed against all neonicotinoid insecticides. No cross-resistance between the neonicotinoids was detected as well as no association with the activity of the P450 microsomal oxidases. Only imidacloprid resistance correlated with carboxylesterase activity. Low to extremely high resistance was observed for insecticide bifenthrin （RF 49 1 243） which was associated with the frequency of the resistant allele in the sodium channel gene but not with the activity of the detoxification enzymes. Finally, the F331W mutation in the acetylcholinesterase enzyme acel gene was fixed in all B. tabaci populations from Cyprus.

关键词： acetamiprid B biotype Bemisia tabaci bifenthrin Cyprus imidacloprid insecticide resistance thiamethoxam

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