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[email protected] @SnO 2-x sandwich structure with electrostatic repulsion effect and oxygen deficiency: enhanced photocatalytic hydrogen evolution activity and inhibited photo-corrosion

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Chemical Engineering Journal 2022年 434卷

作者： Xing Liu Tingting Zhang Yudong Li Jian Zhang Yunchen Du Yulin Yang Yanqiu Jiang Kaifeng Lin MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 PR China Key Laboratory of Bio-based Material Science & Technology Ministry of Education Northeast Forestry University Harbin 150040 China

The activity and stability of photocatalysts are usually restricted to photo-corrosion issues. Here, an efficient electrostatic repulsion and anchor strategy via constructing a [email protected] @SnO 2-x sandwich structure with numerous oxygen vacancies through a simple chemical bath deposition approach. During the formation process, the CdS nanorods are wrapped by the catechol fragments from polydopamine (PDA) and display an electronegative surface. This strong electrostatic repulsion can effectively repel S 2- , thereby effectively preventing S 2- from being separated from CdS and being oxidized by holes or oxygen. Furthermore, the PDA employed as an interlayer of the heterojunction sandwich structure can fix the multivalent metal ions, such as Cd 2+ and Sn 4+ ions on CdS and SnO 2-x, which can be used as a bridge for electronic transmission. More importantly, the as-prepared SnO 2-x nanocrystals are found to possess a large amount of oxygen vacancies, which can effectively control the electronic structure of the catalyst, enhance the electron enrichment effect, promote the absorption of visible light and change the charge transfer ability. More importantly, the accumulation of [email protected] @SnO 2-x (411.37 mmol) photocatalytic hydrogen evolution is 34.3 times than pristine CdS (12.0 mmol) within 5 h, and the catalytic activity remains stable after 10 cycles. Photoelectrochemical characterization, Scanning Kelvin Probe (SKP), Finite Difference Time Domain (FDTD) simulations verified the mechanism of enhanced photocatalytic activity. Herein, this work displays a novel structure and mechanism to enhance the stability of sulfide semiconductors, which may further open a new path in the structural control strategy of photocatalysts.

关键词： Hydrogen evolution Oxygen vacancies Photocatalysis FDTD simulations Corrosion resistant

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Improving Elasticity of Conductive Silicone Rubber by Hollow Carbon Black

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Chemical Research in Chinese Universities 2019年第6期35卷 1124-1132页

作者： ZHANG Jihua CHEN Fengbo ZHAO Yunfeng LIU Mingjie Aerospace Research Institute of Material and Processing Technology Beijing 100076P.R.China Key Laboratory of Bio-inspired Smart Interfacial Science and Technology Ministry of EducationSchool of ChemistryBeihang UniversityBeijing 100191P.R.China

Carbon black-based conductive rubber composites have important impacts on electromagnetic interference(EMI)shielding ***,an excessive amount of carbon black in the recipes of these conductive rubbers has caused their weak ***,hollow carbon black(HCB)particles were used to tune the elasticity of conductive rubber *** hollow morphology produced a better compression recovery of HCB than other solid carbon black,such as acetylene *** the coupling agent was bonded to HCB,their conductive silicone rubber composites were featured by high stretching resilience,a fast compression recovery and excellent conductivity to satisfy the electromagnetic interference shielding ***,the rubber composites with coupling HCB had extremely low variations of mechanical property,conductivity and EMI shielding effectiveness after thermal accelerated aging *** is therefore revealed that the elasticity of HCB and its interfacial chemical coupling with rubber chains both play crucial roles in adjusting the elasticity of conductive rubber to sever long-term EMI protection.

关键词： Conductivity Carbon black Elasticity Electromagnetic shielding Sillicone rubber

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Lignin-Derived Carboxylated Carbon Nanocatalysts for biomass Hydrolysis: Case Study Cellulose and Eucalyptus

SSRN

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SSRN 2022年

作者： Jinjin, Pei Abdu, Hassan Idris Usman, Abdulhamid Oderinde, Olayinka Usman, Samaila Abdalla, Nihad Aboudou, Taslim Shaanxi Province Key Laboratory of Bio-resources College of Bioscience and Bioengineering Shaanxi University of Technology Shaanxi Hanzhong723001 China Federal College of Land Resources Technology Kuru-Jos Plateau State Nigeria Lead City University Tollgate Area Ibadan Nigeria College of Pastoral Agriculture Science and Technology Lanzhou University 768 Jiayuguanxi Road Lanzhou730020 China Sudan University of Science and Technology Khartoum Sudan Evidence Based Medicine Center School of Basic Medical Sciences Lanzhou University Lanzhou China

Lignocellulose has been acknowledged as an auspicious replacement for fuels based on fossils and associated chemicals, as it is the sole, natural renewable feedstock comprising aromatic rings. Just about five percent of lignin is utlised in undervalued commercial applications, especially as a substandard fuel for heat and power or as a concrete additive (lignosulfonate). Until now, the controlled fabrication of carboxylated lignin with well-defined structure and composition is still a grant challenge. Herein, we developed a simple approach by using kraft lignin as the raw material of the catalyst, denoted as (Lignin-COOH) by the planetary ball-mill in the presence of dry ice as an oxidant ensued by protonation. The catalyst contains aliphatic moieties with desirable thermal stability and a carboxylic group (2.7 mmol g–1). Lignin-COOH hydrolysis cellulose to glucose (84.3%), while the eucalyptus (62%) glucose and (88%) xylose within 15 min at 180 °C in (120 ppm) HCl. © 2022, The Authors. All rights reserved.

关键词： Hydrolysis

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A High-Strength, High-Swelling-Resistant, and High-Sensitivity Woody Hydrogel Sensor Prepared Via a Lignin-Retaining Strategy

SSRN

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SSRN 2023年

作者： Meng, Xiangzhen Zhou, Jing Jin, Xin Ma, Shanyu Hong, Shu Aladejana, John Tosin Dong, Anran Luo, Yujia Li, Jianzhang Xia, Changlei Zhan, Xianxu Yang, Rui Jiangsu Co-Innovation Center of Efficient Processing Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials College of Materials Science and Engineering Nanjing Forestry University Jiangsu Nanjing210037 China China Jiangsu Key Open Laboratory of Wood Processing and Wood-Based Panel Technology Jiangsu Nanjing210037 China Dehua Tubaobao New Decoration Material Co. Ltd. Huzhou313200 China Co. Ltd. Suzhou Industrial Park Suzhou215126 China

Environmental adaptability and biocompatibility hydrogel play a critical role in bioelectronics with the growing environmental problems. Tough, flexible hydrogel is popular due to its adaptability to complex circumstances. Wood-derived hydrogel has the satisfied longitudinal strength but lacks excellent swelling and dry shrinkage resistance when achieving high anisotropy. Herein, the highly dimensional stable wood hydrogels (Wood/PAM-Al3+) were proposed by a lignin-preserving strategy, in which lignin provides a high swelling resistance with stronger binding strength in the transverse direction due to the integrated structure of the middle lamella. Furthermore, the coordination formed between lignin and metal ions improves the mechanical strength of the wood hydrogel. Wood/PAM-Al3+ transverse swelling ratio reached 3.90 %, while the longitudinal tensile strength reached 20.5 MPa. In addition, the polyaniline network constructs a conductive electronic network inside the Wood/PAM-Al3+ by free radical polymerization to prepare the flexible sensor. This high-strength and high-stability sensor is used to monitor macro-scale human behavior due to its stable linear pressure and temperature responses. Therefore, this study provides a simple new strategy for constructing tough hydrogels while establishing an alternative pathway to explore lignin networks in new functional materials development. © 2023, The Authors. All rights reserved.

关键词： Hydrogels

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Corrigendum to “Diversification of copper complexes with 2,2′ -bipyridyl ligand bearing benzylthio groups due to the different gas atmosphere” [Inorg. Chimica Acta, 543 (2022) 11151]

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Inorganica Chimica Acta 2024年 568卷

作者： Peng-min Wang Rui Liang Yuan Che Ao-gang Liu Zhao Ma Bao Li Tianle Zhang Key Laboratory of Material Chemistry for Energy Conversion and Storage Semiconductor Chemistry Center School of Chemistry and Chemical Engineering Hubei Key Laboratory of Bio. Inorg. Chem. & Materia. Medica. Huazhong University of Science and Technology Wuhan Hubei 430074 People’s Republic of China

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Detection of 16s Rdna by Triboelectric Nanogenerator-based biosensor System and Mathematic Model

SSRN

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SSRN 2022年

作者： Qu, Xiaolin Wang, Peng Li, Jiawei Wang, Congyu Wang, Xiaoqiang Zhang, Dun Wan, Yi Ai, Shiyun State Key Laboratory of Heavy Oil Processing College of Chemistry and Chemical Engineering China University of Petroleum Qingdao266580 China Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of Oceanology Chinese Academy of Sciences Qingdao266071 China Open Studio for Marine Corrosion and Protection Pilot National Laboratory for Marine Science and Technology 168 Wenhai Middle Road Qingdao266237 China State Key Laboratory of Marine Resource Utilization in South China Sea Marine College Key Laboratory of Tropical Biological Resources of Ministry of Education School of Life and Pharmaceutical Sciences Hainan University 56 Renmin Road Haikou570228 China College of Chemistry and Material Science Food Safety Analysis and Test Engineering Technology Research Center of Shandong Province Shandong Agricultural University Shandong Taian271018 China

The rapid advances in the triboelectric nanogenerator (TENG) have created a massive platform for sensor systems that detect biomolecules in recent years. In this study, we propose a DNA biosensor system-based vertical contact-separation triboelectric nanogenerator for detecting 16s rDNA of sulfate reduction bacteria (SRB). In this biosensor system, the carboxy-functionalized Capture probe was fixed on the etched indium tin oxide glass (etched ITO glass) modified with Triethoxy-3-aminopropyl silane (APTES) by forming an amide bond, multi-walled carbon nanotubes modified Signal probe (CNT-Signal probe) was utilized to amplify detection signal attributed to its excellent electrical conductivity, while TENG is applied as a steady power source. Therefore, the self-powered DNA biosensor system exhibited sensitive detection of sulfate reduction bacteria’s DNA and the detection limit as low as 1 pM by measuring the voltage variation of the sensor. In addition, a mathematical model of DNA concentration detection was constructed according to the Freundlich isotherm, the developed model can predict the detection limit and detecting range. A portable device was fabricated using 3D printing, when present with SRB DNA, the detection result of this DNA biosensor system can be directly indicated by litting up light-emitting diodes (LED). This study not only offers an efficient platform for detecting bacteria but also paves the way for the further development of TENG-based sensor systems for pocket diagnosis. © 2022, The Authors. All rights reserved.

关键词： Probes

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Recent progress of integrated circuits and optoelectronic chips

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science China(Information sciences) 2021年第10期64卷 103-135页

作者： Yue HAO Shuiying XIANG Genquan HAN Jincheng ZHANG Xiaohua MA Zhangming ZHU Xingxing GUO Yahui ZHANG Yanan HAN Ziwei SONG Yan LIU Ling YANG Hong ZHOU Jiangyi SHI Wei ZHANG Min XU Weisheng ZHAO Biao PAN Yangqi HUANG Qi LIU Yimao CAI Jian ZHU Xin OU Tiangui YOU Huaqiang WU Bin GAO Zhiyong ZHANG Guoping GUO Yonghua CHEN Yong LIU Xiangfei CHEN Chunlai XUE Xingjun WANG Lixia ZHAO Xihua ZOU Lianshan YAN Ming LI School of Microelectronics Xidian University State Key Laboratory of Integrated Service Networks Xidian University National Integrated Circuit Innovation Center School of Microelectronics Fudan University School of Integrated Circuit Science and Engineering Beihang University China Center for Information Industry Development Frontier Institute of Chip and System Fudan University Institute of Microelectronics Peking University Nanjing Electronic Devices Institute State Key Laboratory of Functional Material for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Institute of Microelectronics Tsinghua University Center for Carbon-based Electronics Department of Electronics Peking University CAS Key Laboratory of Quantum Information University of Science and Technology of China CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of China Origin Quantum Computing Company Limited Key Laboratory of Flexible Electronics & Institute of Advanced Materials Nanjing Tech University State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of China National Laboratory of Solid State Microstructures & College of Engineering and Applied Sciences Nanjing University State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer Science Peking University School of Electrical and Electronic Engineering Tiangong University Center for Information Photonics and Communications School of Information Science and TechnologySouthwest Jiaotong University School of Electronic Electrical and Communication Engineering

Integrated circuits(ICs) and optoelectronic chips are the foundation stones of the modern information society. The IC industry has been driven by the so-called "Moore's law" in the past 60 years, and now has entered the post Moore's law era. In this paper, we review the recent progress of ICs and optoelectronic chips. The research status, technical challenges and development trend of devices, chips and integrated technologies of typical IC and optoelectronic chips are focused on. The main contents include the development law of IC and optoelectronic chip technology, the IC design and processing technology, emerging memory and chip architecture, brain-like chip structure and its mechanism, heterogeneous integration, quantum chip technology, silicon photonics chip technology, integrated microwave photonic chip, and optoelectronic hybrid integrated chip.

关键词： integrated circuit semiconductor science and technology optoelectronic device and chip photonic integrated circuit wide bandgap semiconductors silicon photonics hybrid integration quantum chip integrated microwave photonic photonic neural computing

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New DNA Aptamer for Nattokinase Recognition

SSRN

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SSRN 2023年

作者： Fa, Yun Zhao, Haijie Shen, Zhaoshuang Wang, Shiyu Han, Linhao Zhao, Jihe Onoda, Akira Gong, Yuxue Liu, Huizhou CAS Key Laboratory of Bio-Based Materials Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao266101 China Shandong Energy Institute Qingdao266101 China College of Life Science Wuchang University of Technology No. 16 Jiangxia Road Hubei Wuhan430223 China University of Chinese Academy of Sciences Beijing100049 China School of Environmental Science Hokkaido University North 10 West 5 Kita-ku Sapporo060-0810 Japan Faculty of Environmental Earth Science Hokkaido University North 10 West 5 Kita-ku Sapporo060-0810 Japan JINAN AIXINZHUOER Pharmaceutical Company Qingdao266000 China

Nattokinase (NK) is one of the most studied fibrinolytic drugs because of its importance in highly fibrinolytic, safe and economical properties. Although various enzyme-activity-based methods have been described for determining NK, the disadvantages they present in terms of cost, analysis time and low portability limit their suitability for situ routine testing. Aptamers are considered as the effient molecule recognition tools which have been widely applied in sensitive biological analysis. Here, we sought to identify DNA aptamers for NK that could then be exploited for the development of rapid and sensitive in situ assays by means of CE-based (capillary electrophoresis) non-SELEX (Systematic Evolution of Ligands by Exponential Enrichment). The selected new DNA aptamer named NKA-4T1 exhibited excellent affinity with 7.9 nM. Moreover, molecular docking results show that 11 nucleotide bases and 9 residues of NK were involved in tight binding, namely, G1-Ser188, A2-Asn155, C3-Glu156, C12-Thr99, C21-Ser188, G24-Tyr263, G27-Tyr256, G30-Lys265, G30-Ser260, A34-Ser194, A34-Ser260, G36-Tyr256 and C37-Tyr256. Finally, the NKA-4T1 aptamer-sensor-based surface plasmon resonance (SPR) assay methodology was established and successfully applied to real samples for NK detection with a low quantification limit of 0.1 nM. © 2023, The Authors. All rights reserved.

关键词： Capillary electrophoresis

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Mastering the Copolymerization Behavior of Ethyl Cyanoacrylate as Gel Polymer Electrolyte for Lithium-metal Battery Application

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Angewandte Chemie 2025年

作者： Weixing Min Prof. Lengwan Li Mingli Wang Prof. Shuaijiang Ma Hao Feng Weirong Wang Hang Ding Tianhui Cheng Zhenxi Li Prof. Tomonori Saito Prof. Huabin Yang Prof. Peng-Fei Cao Institute of New Energy Material Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 China State Key Laboratory of Organic-Inorganic Composites School of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Faculty of Engineering Huanghe Science & Technology University Zhengzhou 450063 China Department of Chemistry School of Science Tianjin University Tianjin 300354 China Department of Materials Science and Engineering The University of Tennessee Knoxville 37996 USA Tianjin Key Laboratory of Metal and Molecular Based Material Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 China

Polymers with strong electron-withdrawing groups (e.g., cyano-containing polymers) are attractive for a wide range of applications due to their high dielectric constant and outstanding electrochemical stability. However, the polymerization of such monomers is difficult to control with trace of water affording instant reactions, and copolymerization with other monomers without using strong acid is even more challenging. The present study demonstrates a facile approach enabling efficient and controllable copolymerization of ethyl cyanoacrylate (ECA) without adding undesired additives, achieving mechanically robust and high ion-conduction gel polymer electrolyte (GPE) for safe and long cycle-life lithium-metal batteries (LMBs). The incorporated dual-lithium salts, i.e., lithium difluoro(oxalato)borate (LiDFOB) and lithium bis(trifluoromethanesulphonyl)imide (LiTFSI) not only facilitate radical polymerization of ECA monomers by suppressing their anionic polymerization, but also promote the formation of high-ionic conducting GPE. The incorporated methyl methacrylate (MMA) monomer accelerates the radical polymerization of ECA (confirmed by DFT calculations), achieving controlled copolymerization of ECA-based copolymers. The mechanically robust polymer network made by the ECA copolymer enables LMBs with both LFP cathodes and high-voltage LCO cathodes (4.5 V) operatable at different temperatures with ultra-long cycle life at 1 C (capacity retention of 81.1 % and 83.8 %, respectively, over 1000 cycles).

关键词： Copolymerization Behavior ECA-based Copolymer Gel Polymer Electrolyte Lithium Metal Batteries High Voltage Cathode

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Schottky Junction Synergies with S-Scheme Heterojunction Strategy to Achieve Uniform Separation of Carriers in Cnqds/Tcn/Znin2s4 Towards Photocatalytic Remediating Petroleum Hydrocarbons Polluted Marine

SSRN

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SSRN 2022年

作者： Yang, Xiaolong Xia, Linhong Zhang, Kaisheng Wang, Xudong Guo, Qi Wu, Yuning Du, Yujie Zhang, Lixue Xia, Jianfei Tang, Hua Zhang, Xia Peng, Yanhua Li, Zhuo School of Chemistry and Chemical Engineering State Key Laboratory of Bio-fibers and Eco-textiles Collaborative Innovation Center of Shandong Marine Bio-based Fibers and Ecological textiles Qingdao University 308 NingXia Road Qingdao266071 China Environmental Materials and Pollution Control Laboratory Institute of Solid State Physics HFIPS Chinese Academy of Sciences Hefei230031 China School of Environmental Science and Engineering Qingdao University Qingdao266071 China School of Chemistry and Chemical Engineering Henan University of Technology Zhengzhou450001 China

The inherent advantages of 2D/2D S-scheme heterojunction contribute well to the photocatalysis due to efficient carriers’separation kinetics and maintained redox ability. However, single 2D/2D S-scheme heterostructure cannot produce a perfect energy band alignment effect since the material contact interface is not perfectly contacted in real circumstance because of surface roughness. Herein, the Schottky junction synergies with S-scheme (S-S strategy) is proposed to overcome the difficulty above. CNQDs are utilized to construct Schottky junction in S-scheme TCN/ZnIn 2S4 to optimize the carriers’ separation kinetics in some area without intimate contact of TCN/ZnIn2S4 . SI-XPS, UPS, and KPFM etc confirms such electron state in material. The CNQDs/TCN/ZnIn2S4 photocatalysts exhibits high degree of dissociation efficiency of photoinduced excitons due to S-S strategy. The results testify construction of S-S heterostructure would be an effective strategy for carriers’modulation, and it will be a promising candidate for "green" elimination of oil spill on water surface. © 2022, The Authors. All rights reserved.

关键词： Heterojunctions

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