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SSRN 2023年

作者： Guo, Zhengzheng Ren, Zijie Gao, Huimin Guan, Junfang Li, Peryue Zheng, Renji Yin, Hang School of Resources and Environment Engineering Wuhan University of Technology Wuhan430070 China Hubei Key Laboratory of Mineral Resources Processing and Environment Wuhan430070 China State Key Laboratory of Advanced Technology for Float Glass China School of Minerals Processing and Bioengineering Central South University Changsha410083 China China Energy Green Building Material CO. LT Wuhan430070 China

Calcination is a critical technique for preparing diatomite filter aids, which enhances their permeability and whiteness. However, calcination is accompanied by a severe reduction in the adsorption capacity of calcined diatomite (C-D). Applications such as high-end filter aids and fine adsorbents typically require C-D with high adsorption performance. So, it is imperative to modify and design C-D for superior adsorption performance while maintaining its permeability. In this study, C-D was modified using sodium hydroxide (NaOH) and magnesium chloride (MgCl2) via a hydrothermal process, and the mechanism of modification was investigated. The resulting Zeolite-P/C-D (modified calcined diatomite, M-D) exhibited not only a high adsorption capacity, but also displayed admissible permeability. Compared with C-D, the adsorption capacity of M-D had increased by dozens of times, and the permeability of M-D remained about 1 darcy. XRD, SEM, TEM, and FTIR analyses revealed the synthesis of Zeolite-P on the surface of C-D. The structure and morphology characteristics of Zeolite-P could be controlled by adjusting the amount of MgCl2, resulting in M-D samples with varying adsorption capacities and permeabilities. This study presents a simple and environmentally friendly approach for modifying C-D, thereby improving the adsorption performance of diatomite filter aids. It paves a way for the comprehensive and efficient utilization of diatomite resources. © 2023, The Authors. All rights reserved.

关键词： Magnesium compounds

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Solid-gas Phase Preparation Method for Porous Molybdenum Trioxide

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Journal of Wuhan University of technology(materials Science) 2020年第3期35卷 495-500页

作者： REN Jie MU Shichun YANG Daohe LI Xuejing DONG Shengqi ZHU Junwei LIN Xianghai DONG Xuebin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Wuhan Construction Engineering Safety Supervision Station Wuhan 430015China School of Civil Engineering Wuhan Univer-sityWuhan 430072China

A novel solid-gas reaction preparation technology was used to adjust the composition and microstructure of the composite crystal materials by changing the preparation parameters. Compared with the commonly used sol-gel method, acid base neutralization sedimentation method, hydrothermal method, and gas phase deposition method, the technology was relatively simplified and the elemental composition was controllable, without the use of openings and additives. A kind of multi-element composite porous metal oxide was obtained by pre-intercalation and decarburization. In order to increase the porosity of MoO3 material and promote the adsorption and diffusion of reactant molecules, the microstructure of MoO3 was studied. The preparation process of porous molybdenum trioxide by solid gas combination process was discussed, which provides an innovative idea for the design and preparation of new materials with a large specific surface area and other desirable properties.

关键词： molybdenum trioxide porous structure solid-gas phase method synthetic

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Recent advances in non-metal doped titania for solar-driven photocatalytic/photoelectrochemical water-splitting

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能源化学 2022年第3期66卷 529-559页

作者： Ying-Ying Wang Yan-Xin Chen Tarek Barakat Yu-Jia Zeng Jing Liu Stéphane Siffert Bao-Lian Su Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium Namur Institute of Structured Matter(NISM) University of NamurB-5000 NamurBelgium Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060GuangdongChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430074HubeiChina Unité de Chimie Environnementale et Interactions sur le Vivant Université Littoral Cote d'Opale145Avenue Maurice Schuman59140 DunkerqueFrance Laboratory of Inorganic Materials Chemistry(CMI) University of NamurB-5000 NamurBelgium Namur Institute of Structured Matter(NISM) University of NamurB-5000 NamurBelgium State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430074HubeiChina

Photocatalytic(PC)/Photoelectrochemical(PEC)water splitting under solar light irradiation is consid-ered as a prospective technique to support the sustainable and renewable H2 economy and to reach the ultime goal of carbon ***2 based photocatalysts with high chemical stability and excellent photocatalytic properties have great potential for solar-to-H2 *** conquer the challenges of the large band-gap and rapid recombination of photo generated electron-holepairs in TiO2,non-metal doping turns out to be economic,facile,and effective on boosting the visible light *** localized defect states such as oxygen vacancy and Ti3+generated by non-metal doping are located in the band-gap of TiO2,which result in the reduction of band-gap,thus a red-shift of the absorption *** hetero dop-ing atoms such as B3+,I7+,S4+/S6+,P5+can also act as electron donors or trap sites which facilitate the charge carrier separation and suppress the recombination of electron-hole *** this comprehensive review,we present the most recent advances on non-metal doped TiO2 photocatalysts in terms of funda-mental aspects,origin of visible light activity and the PC/PEC behaviours for water *** particular,the characteristics of different non-metal elements(N,C,B,S,P,Halogens)as dopants are discussed in details focusing on the synthesis approaches,characterization as well as the efficiency of PC and PEC water *** present review aims at guiding the readers who want quick access to helpful infor-mation about how to efficiently improve the performance of photocatalysts by simple doping strategies and could stimulate new intuitive into the new doping strategies.

关键词： Photocatalytic/Photoelectrochemical water splitting Titania Non-metal doping Visible light photocatalysis

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Hollow Multishelled Structure: synthesis Chemistry and Application

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Chemical Research in Chinese Universities 2024年第3期40卷 346-393页

作者： MAO Dan WANG Chao LI Wei ZHOU Liang LIU Jian ZHENG Zjian ZHAO Yong CAO An-min WANG Shutao HUANG Jiaxing HUO Fengwei CHEN Hongyu MAI Liqiang YU Ranbo WANG Lianzhou LU Yunfeng YU Chengzhong YANG Qihua YANG Zhenzhong ZENG Hua Chun ZHAO Hujun TANG Zhiyong ZHAO Dongyuan WANG Dan State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChineseAcademy of SciencesBeijing 100190P.R.China Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of SciencesBejing 100190P.R.China School of Fashion and Textiles The Hong Kong Polytechnic UniversityHong Kong SARP.R.China Department of Chemistry Fudan UniversityShanghai 200433P.R.China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023P.R.China School of Chemistry Beihang UniversityBejing 100191P.R.China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190P.R.China CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190P.R.China School of Engineering Westlake UniversityHangzhou 310024P.R.China School of Flexible Electronics(Future Technologies) Nanjing Tech UniversityNanjing 211816P.R.China School of Science Westlake UniversityHangzhou 310024P.R.China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070P.R.China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083P.R.China School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of QueenslandBrisbaneQueensland 4072Australia College of Life Science and Technology Bejing University of Chemical TechnologyBejing 100029P.R.China School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200241P.R.China College of Life Sciences Zhejiang Normal UniversityJinhua 321004P.R.China Department of Chemical Engineering Tsinghua UniversityBeijing 100

Hollow multishelled structure(HoMS),a promising and complex multifunctional structural system,features at least two shells that are separated by internal *** unique structure endows it with numerous advantages including low density,high loading capacity,large specific surface area,facilitated mass transport,and multiple spatial confinement *** the past twenty years,benefiting from the booming development of synthesis methods,various HoMS materials have been prepared and show promising applications in diverse areas.

关键词： Hollow multishelled structure synthesis chemistry Energy storage Catalysis Electromagnetic wave absorption Drug delivery Sensor

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Phase-junction Ag/TiO_(2)nanocomposite as photocathode for H_(2)generation

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Journal of materials Science & technology 2021年第24期83卷 179-187页

作者： Hemdan S.H.Mohamed Mohamed Rabia Xian-Gang Zhou Xu-Sen Qin Gomaa Khabiri Mohamed Shaban Hussein A.Younus S.Taha Zhi-Yi Hu Jing Liu Yu Li Bao-Lian Su State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Physics Department Faculty of ScienceFayoum UniversityFayoum63514Egypt Nanophotonics and Applications Lab Physics DepartmentFaculty of ScienceBeni-Suef UniversityBeni-Suef62514Egypt Chemistry Department Faculty of ScienceFayoum UniversityFayoum63514Egypt Nanostructure Research Centre(NRC) Wuhan University of TechnologyWuhan430070China Laboratory of Inorganic Materials Chemistry(CMI) University of Namur61 rue de Bruxelles5000NamurBelgium

Developing anatase/rutile phase-junction in Ti O_(2)to construct Z-scheme system is quite effective to improve its photoelectrochemical *** this work,the anatase/rutile phase-junction Ag/Ti O_(2)nanocomposites are developed as photocathodes for hydrogen *** optimized Ag/Ti O_(2)nanocomposite achieves a high current density of 1.28 m A cm-2,an incident photon-to-current conversion efficiency(IPCE)of 10.8%,an applied bias photon-to-current efficiency(ABPE)of 0.32 at 390 nm and a charge carriers’lifetime up to 2000 *** enhancement on photoelectrochemical activity can be attributed to:(ⅰ)the generated Z-scheme system in the anatase/rutile phase-junction Ag/Ti O_(2)photocathode enhances the separation,diffusion and transformation of electron/hole pairs inside the structure,(ⅱ)Ag nanodots modification in the anatase/rutile phases leading to the tuned band gap with enhanced light absorption and(ⅲ)the formed Schottky barrier after Ag nanodots surface modification provides enough electron traps to avoid the recombination of photogenerated electrons and *** results here suggest that developing phase-junction nanocomposite as photocathode will provide a new vision for their enhanced photoelectrochemical generation of hydrogen.

关键词： Ag/TiO_(2)nanocomposites Anatase/rutile phase-junction Z-scheme Photocathode H2 generation

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High ammonia sensitive ability of novel Cu12Sb4S13 quantum dots@reduced graphene oxide nanosheet composites at room temperature

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Chinese Chemical Letters 2020年第8期31卷 2109-2114页

作者： Yueli Liu Binghua Sang Haoran Wang Zijing Wu Yuxuan Wang Ziwei Wang Zhuoyin Peng Wen Chen State Key Laboratory of Silicate Materials for Architectures School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070China The Key Laboratory of Efficient&Clean Energy Utilization School of Energy and Power EngineeringChangsha University of Science and TechnologyChangsha 410111China

In the work,rGO nanosheet is synthesized using the typical Hummer’s method,then Cu12Sb4 S13 quantum dots@rGO composites are prepared by solvent thermal method,and Cu12Sb4 S13 quantum dots with the average size of 5 nm are densely distributed on the surface of rGO ***3 gas response of Cu12Sb4 S13quantum dots@rGO nanosheet composites at room te mperature of 25℃is enhanced compared with the pure Cu12Sb4 S13 quantum dots and rGO nanosheet,and the composites possess an excellent stability during the humidity range of 45%-80%with a low detection limit of 1 ppm,which is related with the intrinsic hydrophobicity characteristic of Cu12Sb4 S13 quantum *** also proves that Cu12Sb4 S13quantum dots@rGO nanosheet composites have a quite high selectivity towards ammonia compared with ethanol,methanol,acetone,toluene,hydrogen sulfide and nitrogen dioxide at room *** gas sensing mechanism of the composites is discussed primarily.

关键词： Cu12Sb4S13 quantum dots@rGO nanosheet Composites NH3 Room temperature Gas response

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Software and Application of Big Data Analysis Platform for Complex Casting Manufacturing Process Quality 75

Software and Application of Big Data Analysis Platform for C...

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75th World Foundry Congress, WFC 2024

作者： Zhou, Jianxin Zhou, Wenhao Yu, Peng Li, Wen Ji, Xiaoyuan Yin, Yajun Shen, Xu Zhang, Meijuan Qie, Xiwang Nan, Hai Zhu, Shouqin Xie, Mingguo Wang, Yu Li, Hulin Liu, Xiao Zhang, Baoming Yao, Gang Wang, Chuansheng Wang, Donghong Hu, Jianping Qian, Xuewen State Key Laboratory of Material Processing and Die & Mould Technology Huazhong University of Science & Technology Wuhan430074 China Baimtec Material Co. Ltd. Beijing100094 China Hefei Casting and Forging Factory of Anhui Heli Co. Ltd. Hefei230000 China Xi’an Aerospace Engine Co. Ltd. Xian710000 China CRCC High-Tech Equipment Co . Ltd. Kunming650215 China Guizhou Aircraft Engine Precision Casting Co. Ltd. Guiyang550014 China Wuxi Branch of FAW Casting Co. Ltd. Wuxi214177 China Shanghai Key Laboratory of Advanced High-temperature Materials and Precision Forming Shanghai Jiao Tong University Shanghai200240 China Wuhan Yimo Technology Co. Ltd. Wuhan430074 China Wuhan Huazhu Information Technology Co. Ltd. Wuhan430074 China

The complex castings used in major equipment in industries such as aerospace, automotive, rail transportation, and engineering machinery are prone to defects such as porosity, deformations, and inclusions due to the coupling effects and fluctuations of key process parameters. This leads to common problems such as "key quality points exceeding standards" and large quality fluctuations, seriously affecting the reliability and stability of major equipment manufacturing products. In this paper, a systematic study on the model-method-technology of typical defect quality big data was conducted. Firstly, relevant models were constructed, such as the single piece quality tracing model, the multi-source heterogeneous information fusion model, the model of production parameters and intrinsic relationship of typical defects, and the model of comprehensive element time-varying disturbance and defect evolution mapping. Then, five key technologies were developed, including high-precision and efficient online monitoring and prediction of typical defects, tracing the causes of quality problems in multiple links, and quality control based on the relationship between production fluctuations and metallurgical defect evolution. Based on the above research, data collection, cleaning, mining, sensitivity analysis, and relationship modeling algorithms were established for the casting production process. Special core algorithms for predicting defects such as shrinkage, looseness, and gas entrapment were proposed, achieving high-precision prediction of typical defects. A "1+N" quality big data analysis software and hardware integrated platform was developed. After applying the integrated platform to the five major industries of aerospace, automotive, rail transportation, engineering machinery, and aerospace industries, the results showed an accuracy of quality prediction of ≥80% and a reduction in defects of ≥ 30%, leading to the formulation of solutions and key demonstrations in these indu

关键词： Aerospace industry

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Directly Transferring Nanostructural Platinum into Ptxay-Type Nanocompounds for Effective Catalysis

SSRN

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SSRN 2022年

作者： Zhang, Chengtian Liu, Qian Zhu, Jiawei Wang, Hong Mu, Xueqin Zeng, Weihao Pu, Zonghua Wang, Pengyan Chen, Lei Yu, Jun Lin, Rui Mu, Shichun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu hydrogen Valley Foshan528200 China School of Automotive Studies Tongji University Shanghai201804 China

Although anion-regulated PtxAy (A is anion, P, S, Se, Te, etc.) catalysts are promising in energy conversion applications, their facile synthesis is very challenging. Herein, we find a facile and general route to synthesize PtxAy-type nanocompounds by anion-regulated-engineering of nanostructural Pt. Taking PtP2 nanocrystals as sample, they can form by one-step phosphorization of Pt nanoparticles dispersed on carbon. PtP2 nanocrystals ~5 nm in size exhibit excellent hydrogen evolution/oxidation (HER/HOR) and oxygen reduction (ORR) reaction performance. In acidic media, it only requires a HER overpotential of 22 mV to reach the current density of 10 mA cm-2, with exceptional HOR and ORR mass activity, increased by 11.1% and 28.6% compared to Pt catalysts. Also, PtS, PtSe2 and PtTe2 nanocrystals are got by direct sulfuration, selenization, and telluration on nanostructural Pt, respectively, verifying generality of the facile anion-regulation strategy to build PtxAy-type nanocompounds and accessibility to industrial-scale synthesis of anion-regulated Pt catalysts. © 2022, The Authors. All rights reserved.

关键词： Nanocrystals

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Highly Deformable Ag2te1-Xsex-Based Thermoelectric Compounds

SSRN

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SSRN 2023年

作者： Feng, Liping Guo, Anan Liu, Keke Bai, Hui Zhang, Qingjie Wu, Jinsong Su, Xianli Tang, Xinfeng Uher, Ctirad Hubei Longzhong Laboratory Wuhan University of Technology Xiangyang Demonstration Zone Xiangyang441000 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Nanostructure Research Center Wuhan University of Technology Wuhan430070 China Department of Physics University of Michigan Ann ArborMI48109 United States

Thermoelectric semiconductors are crucial for many critical applications, but are also universally fragile, which greatly limits the development of room temperature flexible thermoelectric devices. Herein, an extraordinary deformability at room temperature and high thermoelectric performance are simultaneously realized in wide composition of Ag2Te1-xSex (x = 0-0.2) compounds with monoclinic structure. An average compressive strain rate of 24% at room temperature is attained for the pristine Ag2Te compound. Moreover, a tensile strain rate of 43% is measured at room temperature using the in-situ transmission electron microscopy. First Principles calculations and in-situ transmission electron microscope tensile test results indicate that the Ag2Te compound is inclined to slip along the (-102) [010] plane under external forces due to a larger ratio between the cleavage energy (Ec) and the slip energy barrier. The slipping process generates high concentrations of dislocations, deformations, and amorphous structures, which together dissipate the externally applied load energy, yielding superior deformability. Meanwhile, the maximum dimensionless figure of merit ZT of 0.61 is obtained at 380 K. This study demonstrates that Ag2Te-based compounds are promising for the fabrication of flexible thermoelectric devices in applications, such as wearable, room temperature electronic gadgets. © 2023, The Authors. All rights reserved.

关键词： High resolution transmission electron microscopy

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First Principles Study on C3n4 Intermediate Band materials

SSRN

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SSRN 2022年

作者： Yin, Jianbo Yan, Xiaobin Zhu, Min State Key Laboratory of Advanced Processing and Recycling of Non–ferrous Metals Lanzhou University of Technology Lanzhou730050 China School of Material Science and Engineering Lanzhou University of Technology Lanzhou730050 China

n this study, a new intermediate band structure of cubic carbon nitride (C3N4 ) was found by First principles calculation. The electronic structures and optical properties of cubic C3N4 doped by vanadium (V) were investigated by First principles. The calculation results of electronic structure show that the V doped cubic C3N4 can produce two intermediate bands around the Fermi level. The calculation results of optical property show that V doping can significantly increase the light absorption of cubic C3N4 in UV-visible region. Therefore, the overall calculated results show that V doped cubic C3N4 can produce new intermediate bands structure and improve optical performances of the material. © 2022, The Authors. All rights reserved.

关键词： Calculations

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