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Journal of Materials Science & Technology 2022年第19期114卷 233-239页

作者： Jie Wen Zihao Song Jiabao Ding Feihong Wang Hongpeng Li Jinyong Xu Chao Zhang College of Mechanical Engineering Yangzhou UniversityYangzhou 225127China School of Environmental Science and Engineering Yancheng Institute of TechnologyYancheng 224051China

Due to their large surface-to-volume ratio and low electronic noise,two-dimensional transition metal carbides(Ti_(3)C_(2)T_(x) MXene)and their derived transition metal oxides have demonstrated significant potential for use in high-precision gas ***,the construction of high-sensitivity Ti_(3)C_(2)T_(x) MXene-based gas sensors operated at room temperature(RT)is still a major ***,we demonstrate a sensitive nanocomposite prepared by uniformly anchoring silver nanoparticles(agNPs)on Ti_(3)C_(2)T_(x) MXene-derived transition metal oxide(TiO_(2))nanosheets for high-sensitivity NH_(3) *** can not only serve as spacers to effectively prevent the restacking of MXene-derived TiO_(2)nanosheets and ensure an effective transmission highway for target gas molecules,but also enhance the sensitivity of the sensor through chemical and electronic *** integrating the unique merits of the individual components and the synergistic effects of the composites,the optimized ag@TiO_(2)nanocomposite-based sensors revealed an extraordinary response value of 71.8 to 50 ppm NH_(3) at RT with a detection limit as low as 5 *** addition,the ag@TiO_(2)NH_(3) sensor also exhibits excellent selectivity and outstanding *** strategy provides an avenue for the development of MXene derivatives for advanced gas sensors.

关键词： Ti_(3)C_(2)T x MXene derivative TiO_(2) ag nanoparticles Gas sensor

Enhanced optical absorption by ag nanoparticles in a thin film Si solar cell

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Chinese Physics B 2013年第4期22卷 330-333页

作者：陈凤翔汪礼胜许文英 Department of Physics Science and Technology Wuhan University of Technology

Thin film solar cells have the potential to significantly reduce the cost of photovoltaics. Light trapping is crucial to such a thin film silicon solar cell because of a low absorption coefficient due to its indirect band gap. In this paper, we investigate the suitability of surface plasmon resonance ag nanoparticles for enhancing optical absorption in the thin film solar cell. For evaluating the transmittance capability of ag nanoparticles and the conventional antireflection film, an enhanced transmittance factor is introduced. We find that under the solar spectrum AM1.5, the transmittance of ag nanoparticles with radius over 160 nm is equivalent to that of conventional textured antireflection film, and its effect is better than that of the planar antireflection film. The influence of the surrounding medium is also discussed.

关键词： transmittance surface plasmon resonance ag nanoparticles thin film solar cells

In situ introduction of dispersed metallic ag nanoparticles into the channels of mesoporous carbon CMK-3

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Chinese Chemical Letters 2007年第8期18卷 1017-1020页

作者： Ai Bing Chen Wei Ping Zhang Yong Liu Xiu Wen Han Xin He Bao State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China

An in situ reduction method has been developed to fabricate metallic ag nanoparticles inside the channels of mesoporous carbon CMK-3. This approach combines function of the CMK-3 surface by oxidation using HNO3 with the subsequent absorption of ag^＋ The resultant nanocomposite materials were characterized by nitrogen adsorption, X-ray diffraction, Auger electron spectroscopy and transmission electron microscopy. Compared with the conventional impregnation method, our approach shows that ag nanonarticles of 2-4 nm can be uniformlv incorporated into CMK-3.

关键词： ag nanoparticles Mesoporous carbon CMK-3 In situ synthesis

Formation of Copolymer-ag nanoparticles Composite Micelles in Three-dimensional Co-flow Focusing Microfluidic Device

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Journal of Wuhan University of Technology(Materials Science) 2019年第6期34卷 1259-1265页

作者： FENG Mengran HE Guangyao YI Si SONG Weizheng CHEN Yanjun ZHANG Chaocan WANG Yifeng School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

A novel method was presented to create composite micelles of amphiphilic copolymers and ag nanoparticles(NPs) in a three-dimensional co-flow focusing microfluidic device(3D CFMD). Self-assembly of the copolymers was initiated by the fast mixing of water and a blend dispersion of hydrophobic ag NPs and amphiphilic copolymers. At the same time, the hydrophobic ag NPs enter the core of copolymer micelles, based on the hydrophobic interaction. The copolymer-ag NPs composite micelles have a core-shell structure with copolymer shell and ag NPs core. COMSOL Multiphysics is used to simulate the concentration distribution of copolymers and ag NPs under different flow rates. Co-assembly microfluidic conditions are determined based on simulation results. Under suitable microfluidic conditions, both block copolymers and gradient copolymers can co-assemble with hydrophobic ag NPs to form composite micelles, respectively. This microfluidic coassembly method will have a good prospect in the preparation of composite micelles of amphiphilic copolymers and metal nanoparticles.

关键词： composite micelles self-assembly co-flow microfluidic simulation amphiphilic copolymers ag nanoparticles

Enhanced Photocatalytic Efficiency of TiO2 by Combining the Modification of ag nanoparticles with the Application of Anodic Bias

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Chinese Chemical Letters 2003年第5期14卷 539-542页

作者： ChunHE YaXIONG DongSHU XiHaiZHU SchoolofChemistryandChemicalEngineering ZhongshanUniversityGuangzhou510275 DepartmentofChemistry ZhaoqingCollegeZhaoqing526061

ag-TiO2/ITO film electrode was used as photoanode to investigate the feasibility of a hybrid technology of ag nanoparticles combined with the application of anodic bias. The results showed that the deposited ag and a... 详细信息

关键词： Photoelectrochemistry photocatalysis ag nanoparticles TiO2 formic acid.

Detection of H_2O_2 at a composite film modified electrode with highly dispersed ag nanoparticles in Nafion

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Chinese Chemical Letters 2011年第4期22卷 458-460页

作者： Mei Xiu Kan Xue Ji Wang Hui Min Zhang School of Science Beijing Institute of TechnologyBeijing 100081China

ag nanoparticles were prepared by using the ion-exchange of Nafion combined with electrochemical reduction on the electrode. ag nanoparticles are highly dispersed in Nafion film with an average size of 4.0±0.2 *** amount of ag nanoparticles can be readily controlled by the amount of Nafion coated on the *** obtained ag nanoparticles exhibit good catalytic activity for the reduction of H2O2 with a linear response to H2O2 in the concentration range of 0.04-8.0 mmol/L with a sensitivity of 0.34μA/mmol/L and a detection limit of 1.0×10^（-8） mol/L.

关键词： ag nanoparticles Nafion Electrodeposition Electrocatalytic activity Hydrogen peroxide

Synchronous activation of ag nanoparticles and BiOBr for boosting solar-driven CO_(2)reduction

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Chinese Chemical Letters 2023年第6期34卷 252-255页

作者： Gaopeng Liu Lin Wang Bin Wang Xingwang Zhu Jinman Yang Pengjun Liu Wenshuai Zhu Ziran Chen Jiexiang Xia Key Laboratory of Medicinal and Edible Plants Resources of Hainan Province Hainan vocational university of Science and TechnologyHaikou 571126China School of Chemistry and Chemical Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China Department of Architecture and Environment Engineering Sichuan Vocational and Technical CollegeSuining 629000China

Artificial photosynthesis of valuable chemicals from CO_(2)is a potential way to achieve sustainable carbon *** CO_(2)conversion activity is still inhibited by the sluggish charge kinetics and poor CO_(2)***,ag nanoparticles coupled Bi OBr have been constructed by in-situ photoreduction *** crafting of interface between ag nanoparticles and Bi OBr nanosheets,achieving an ultra-fast charge *** Bi OBr semiconductor excited electrons and plasmonic ag nanoparticles generated high-energy hot electrons synchronous accelerates the C=O double bond ***,the optimized ag/BiOBr-2 heterostructure shows excellent CO_(2)photoreduction activity with CO production of 133.75 and 6.83μmol/g under 5 h of 300 W Xe lamp and visible light(λ>400 nm)irradiation,which is 1.51 and 2.81 folds versus the pristine Bi OBr,*** mechanism of CO_(2)photoreduction was in-depth understood through in-situ FT-IR spectrum and density functional theory *** study provides some new perspectives into efficient photocatalytic CO_(2)reduction.

关键词： ag nanoparticles BiOBr Hot electrons Charge transfer CO_(2)photoreduction

Green synthesis of ag nanoparticles: Effect of algae life cycle on ag nanoparticle production and long-term stability

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Transactions of Nonferrous Metals Society of China 2018年第5期28卷 974-979页

作者： Oksana VELGOSOVA Anna MRAZIKOVA Elena CIZMAROVA Jaroslav MALEK Institute of Materials and Quality Engineering Faculty of Materials Metallurgy and Recycling Technical University of Kosice Letnfi 9/A 040 01 Kosice Slovakia Republic Department of Materials Engineering Faculty of Mechanical EngineeringCzech Technical University in Prague Karlovo nam. 13 121 32 Prague 2 Czech Republic

Spherical ag nanoparticles（agNPs） were biologically synthesized using four different extracts prepared from Parachlorella kessleri algae cultivated for 1, 2, 3 and 4 weeks. The influence of algae life cycle on agNPs formation and effect of different storage conditions on agNPs long-term stability were investigated. The age of algae influenced the rate of agNPs synthesis and amount of agNPs in solution. The age of algae did not influence the agNPs long-term stability. UV–vis and TEM observation revealed that long-term stability of agNPs can be influenced by storage temperatures, and low temperature positively influences the agNPs stability. agNPs stored at dark and at temperature of ~5 °C showed the best long-term stability regardless of the culture age. Such agNPs remained spherical, fine（5-20 nm） and stable（no agglomeration） even after 6 months.

关键词： ag nanoparticles stability Parachlorella kessleri

Improved triethylamine sensing properties of fish-scale-like porous SnO_(2) nanosheets by decorating with ag nanoparticles

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Journal of Materiomics 2022年第2期8卷 518-525页

作者： Jingyi Zhang Bowen Zhang Shujuan Yao Hongyuan Li Can Chen Hari Bala Zhanying Zhang School of Materials Science and Engineering Henan Polytechnic UniversityJiaozuo454000China Cultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province Henan Polytechnic UniversityJiaozuo454000China

Three dimensional(3D)porous nanostructures assembled by low-dimensional nanomaterials are widely applied in gas sensor according to porous structure which can facilitate the transport of gas *** this work,fish-scale-like porous SnO 2 nanomaterials assembled from ultrathin nanosheets with thick-ness of 16.8 nm were synthesized by a facile hydrothermal *** ag nanoparticles were decorated on the surface of SnO_(2) nanosheets via one-step method to improve their gas-sensing *** sensing properties of pristine SnO_(2) and ag/SnO_(2) nanosheets were investigated *** deco-rating with ag nanoparticles,the characteristics of SnO_(2) based sensor for triethylamine detection were significantly ***,the ag/SnO_(2) based sensor with ag content of 2 at%exhibited the highest triethylamine sensing sensitivity at optimum work temperature of 170?*** improved sensing properties of ag/SnO_(2) sensors were attributed to the sensitizing actions of ag nanoparticles as well as the unique hierarchical porous architecture.

关键词： Fish-scale-like porous structure SnO_(2)nanosheetes ag nanoparticles Triethylamine Gas sensor

Facile fabrication of functional cellulose paper with high-capacity immobilization of ag nanoparticles for catalytic applications for tannery wastewater

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Journal of Leather Science and Engineering 2020年第1期2卷 55-65页

作者： Ruiquan Yu Tianxiang Lan Jing Jiang Hao Peng Ruifeng Liang Gongyan Liu National Engineering Laboratory for Clean Technology of Leather Manufacture College of Biomass Science and EngineeringSichuan UniversityChengdu 610065China The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education College of Biomass Science and EngineeringSichuan UniversityChengdu 610065China The State Key Laboratory of Hydraulic and Mountain River Engineering Sichuan UniversityChengdu 610065China

It has been a research goal to develop macroscopic materials with an optimized surface structure to affix silver nanoparticles which could contaminate water and maximize their practical *** paper is a versatile biomass material valued for its abundance,low cost,biocompatibility,and natural *** now,its potential application in water purification has not been adequately *** this study,gallic acid-modified silver nanoparticles(GA@agNPs)were loaded onto commercial cellulose filter paper using a simple lipoic acid modification process(GA@agNPs-LA-CP).Scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),and X-ray diffraction(XRD)were used to characterize the GA@*** catalytic activity of the GA@agNPs-LA-CP was evaluated by the reduction reaction of methylene blue(MB),Rhodamine B(RhB),and 4-nitrophenol(4-NP)with sodium borohydride(NaBH4).The GA@agNPs-LA-CP exhibited excellent catalytic activity toward MB,RhB,and 4-NP,taking advantage of its high specific surface area generated by the cellulose fiber network ***,due to the electrostatic interactions between the cationic dyes and the GA@agNPs,the as-prepared catalytic composite material serves as a better catalyst for MB and RhB,suggesting dual applications of the composite materials for organic wastewater treatment and the removal of harmful *** implies that the immobilization of agNPs on cellulose papers is an effective method and can be applied to efficient wastewater treatment applications.

关键词： ag nanoparticles Catalyst Tannery wastewater Cellulose paper