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Preparation of tungsten-iron composite oxides and application in environmental catalysis for volatile organic compounds degradation

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Tungsten 2022年第1期4卷 38-51页

作者： Jiang Liu Song-Lin Wang Ji-Li Xuan Bo-Fang Shan Hong Luo Li-Ping Deng Peng Yang Chen-Ze Qi Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process School of Chemistry and Chemical EngineeringShaoxing UniversityShaoxing 312000China School of Chemistry and Chemical Engineering Henan Institute of Science and TechnologyXinxiang 453003China Zhejiang Hengfeng New Material Co. LTDShaoxing 312000China State Key Laboratory of Chemical Engineering College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China

Emission of volatile organic compounds has important influence on complex air pollution and human *** this paper,a series of tungsten-iron composite oxides with different proportions and preparation methods were synthesized and first used for catalytic combustion of chlorobenzene and toluene,as typical polluting gas *** WO_(3)-based solid catalytic materials were systematically characterized by modern analytical methods,and the results showed that there was strong electron interaction between W and Fe elements in the composite oxides,and the presence of a certain amount of tungsten oxide inhibited the crystallization of iron oxide,and vice versa,which were beneficial to the uniform dispersion of tungsten-iron components into each other and the improvement of redox *** with single-component oxide,the formation of tungsten-iron composite oxide affected the micro-structure,improved the specific surface area and optimized the pore structure of *** performance test results showed that the tungsten-iron composite oxide(FeWO_4-0.5 Fe_(2)O_(3),molar ratio of tungsten and iron was 1/2)prepared using citric acid-based sol-gel method was the optimal,and its catalytic degradation efficiency could reach 90%for chlorobenzene and 83%for toluene at 320℃,and maintain at least 60 h without obvious deactivation,with high selectivity to the formation of HCl and CO_(2).

关键词： Volatile organic compounds Catalytic combustion WO_(3) FeWO_4 Composite oxide Synergistic catalytic effect

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Multicomponent supramolecular nanoaggregates with co-emissive electrochemiluminescence

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Matter 2025年第6期8卷

作者： Dai, Li Fang, Jinglong Jiang, Tong Li, Qi Ren, Xiang Li, Yuyang Wu, Dan Ma, Hongmin Lei, Jianping Ju, Huangxian Wei, Qin Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong Collaborative Innovation Center for Green Chemical Manufacturing and Accurate Detection School of Chemistry and Chemical Engineering University of Jinan Jinan250022 China State Key Laboratory of Biochemical Engineering Institute of Process Engineering Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical Engineering Nanjing University Nanjing210023 China

The development of particulate electrochemiluminescence (ECL) emitter with high efficiency is challenging due to either the low electrochemical reaction efficiency for nanoparticles with larger sizes or the low quantum efficiency of molecular luminophores in aggregated forms. While the synthesis of aggregation-induced electrochemiluminescence (AI-ECL) luminophores with high quantum efficiency requires complicated procedures, a supramolecular strategy is proposed for constructing multicomponent nanoaggregates with co-emissive ECL. Aggregation-induced emission (AIE) active tetraphenylethylene (TPE) was used as a molecular matrix to disperse the aggregation-caused quenching (ACQ) luminophores with high quantum efficiency, boron dipyrromethene (BDP), and rhodamine B (RhB). Co-emissions of both molecular matrix and doped luminophores were achieved. The synergistic effects of the supramolecular interactions for enhancement of emission efficiency were confirmed by spectral measurement and molecular dynamic simulation. Small nanoaggregates with higher ECL efficiency were prepared on microfluidic chips and were used as nanolabels for sensitive ECL immunoassays. © 2025 Elsevier Inc.

关键词： Nanoclay

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Tunable and Functional Ionic Liquids Embedded Hyper-Crosslinked Polymers as H2o-Tolerant Adsorbents for Highly Efficient Gaseous Toluene Capture

SSRN

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SSRN 2024年

作者： Nie, Xiongfei Qiu, Xinjie Zhang, Ruina Ke, Quanli Liu, Huayan Zhang, Xiangping Lu, Hanfeng Cui, Guokai Zhang, Suojiang Innovation Team of Air Pollution Control Institute of Catalytic Reaction Engineering State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology College of Chemical Engineering Zhejiang University of Technology Hangzhou310014 China Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China

Developing advanced sorbents for efficient aromatic VOCs sorption from humid conditions are highly desired. In this work, a series of tunable and functional ionic liquids embedded hyper-crosslinked polymers (ILHCPs) containing different structures of anion-functional ionic liquids (ILs) with 1,4-dichloroxylene (DCX) as the crosslinker were designed and prepared for highly efficient gaseous toluene adsorption under humidity. These ILHCPs could achieve high surface area (600~900 m2 g−1), high micropore volume (0.1~0.3 cm3 g−1), small average pore size (4~5 nm), and large water contact angle (up to 110°) through tuning the anion structures and the initial IL:DCX molar ratio. Gaseous toluene adsorption isotherms on typical ILHCPs were tested under 298, 308, and 318 K, and a dual-site Langmuir-Freundlich (DSLF) model was used for well describing adsorption isotherms, which can be divided into two contributions for site I and site II. The isosteric heats of gaseous toluene adsorption were calculated. Furthermore, toluene adsorption under different humidity conditions were also tested. Compared with DCX-based self-condensed HCP, toluene adsorption capacity of ILHCPs remained steadily (270 mg g−1) even under 80% humidity. To our best knowledge, this is the first example of tuning functional ILHCPs for efficient H2O-tolerant gaseous toluene adsorption. The method may also open a door to achieving high adsorption efficiency of other volatile organic compounds by functional IL-based porous materials. © 2024, The Authors. All rights reserved.

关键词： Gas adsorption

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Systematic engineering of the sterol synthesis pathway for Saccharomyces cerevisiae promotes the efficient production of β-caryophyllene

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Metabolic engineering 2025年 91卷 347-355页

作者： Yapeng Zhang Chenwen Liu Wenqiang Li Zhidong Ma Bo Lv Lei Qin Chun Li Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology/Institute of Biochemical Engineering School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing China. Department of Chemical Engineering Tsinghua University Beijing China Key Lab for Industrial Biocatalysis Ministry of Education Tsinghua University Beijing China. Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology/Institute of Biochemical Engineering School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing China. Electronic address: lv-b@***. Key Lab for Industrial Biocatalysis Ministry of Education Tsinghua University Beijing China Center for Synthetic and Systems Biology Tsinghua University Beijing China Beijing Key Laboratory of Recombinant Protein Synthetic Biomanufacturing Beijing China State Key Laboratory of Green Biomanufacturing Beijing China. Electronic address: qinleithu@***. Key Laboratory of Medical Molecule Science and Pharmaceutics Engineering Ministry of Industry and Information Technology/Institute of Biochemical Engineering School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing China State Key Laboratory of Green Biomanufacturing Beijing China. Electronic address: lichun@***.

β-caryophyllene, a plant-derived sesquiterpene, serves as a food flavoring, anti-inflammatory agent, antioxidant, and high-energy fuel source. Extraction of β-caryophyllene from plants is a costly and inefficient process. Therefore, microbial cell factories have been employed for the production of β-caryophyllene. However, the limited yield is insufficient for its industrial application. In this study, we balanced the utilization of cellular resources for growth and production by systematically regulating the sterol synthesis pathway to maximize the synthesis of β-caryophyllene. In the competitive pathways concerning sterol and fatty acid synthesis, genes expression was suppressed by substituting the original promoters with a glucose-sensing promoter P and a sterol synthesis promoter P, respectively. This approach effectively increased the production of β-caryophyllene by 6.8 times, reaching 854.7 mg/L. engineering glucose-sensing pathway altered the strength of P, resulting in an increase in β-caryophyllene production to 1.25 g/L. The cell growth and β-caryophyllene production were further boosted through diploid fusion, resulting in 21.4 g/L β-caryophyllene in fed-batch fermentation. This represents the highest reported production of β-caryophyllene to date. This study provides a valuable reference for the production of sesquiterpenes in microbial cell factories.

关键词： glucose-sensing pathway sterol synthesis pathway regulation yeast cell factory β-caryophyllene

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Biosorbent silver nanoparticles decorated coffee-ground waste composite for cleaning water and antimicrobial applications

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Environmental Science and Pollution Research 2025年第5期32卷 2280-2297页

作者： Al-Ghamdi, Azza A. Ibrahim, Sherif M. Lu, Xingmei Xin, Jiayu El-Sayed, Ibrahim El-Tantawy Galhoum, Ahmed A. Wageh, Swelm. Department of Chemistry College of Science Imam Abdulrahman Bin Faisal University P.O. Box 1982 Dammam31441 Saudi Arabia Renewable and Sustainable Energy Unit Imam Abdulrahman Bin Faisal University P.O. Box 1982 Dammam31441 Saudi Arabia Nuclear Materials Authority P.O. Box 530 El-Maadi Cairo Egypt Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Innovation Academy for Green Manufacture Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China School of Chemistry and Chemical Engineering University of Chinese Academy of Sciences Beijing100049 China Sino Danish College University of Chinese Academy of Sciences Beijing100049 China Chemistry Department Faculty of Science Menoufia University Shebin El-Kom Egypt Department of Physics Faculty of Science King Abdulaziz University Jeddah21589 Saudi Arabia

A sustainable biosorbent, silver nanoparticles-decorated coffee-ground waste (CWAg), was synthesized through a simple in-situ reduction method. CWAg is extensively characterized via SEM–EDX, PZC, FTIR, XRD, HR-TEM, and XPS analyses. The biosorbent was tested to remove chromium (Cr(VI)) and methylene blue (MB) from wastewater, and its antibacterial properties was evaluated. CWAg demonstrated efficient sorption efficiencies, achieving ⁓149.9 mg/g at 323 K and pH: 2.0 for Cr(VI) and ⁓113.4 mg/g at 293 K and pH: 6.0 for MB, at a biosorbent dose of 1 g/L. The equilibration times were 90 and 120 min for Cr(VI) and MB, with half-sorption times (tHST) of 9.2 and 13.9 min, respectively. The sorption mechanisms were successfully fitted with Sips isotherm and Pseudo-second-order models. Simultaneous sorption of MB and Cr(VI) at pH 2.0 exhibited antagonism, while a synergistic effect was observed at pH 6.0. Desorption and regeneration were achieved using NaOH and HCl solutions for Cr(VI) and MB, respectively. The efficiencies were just reduced by 9–13%. Finally, CWAg exhibited remarkable effectiveness for removing Cr(VI) from complex tannery effluent. Moreover, CWAg demonstrated positive antibacterial effects against both Gram-positive and Gram-negative bacteria, surpassing raw coffee-ground waste, underscoring the significant role of silver nanoparticles in enhancing bacterial inhibition. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Silver nanoparticles

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Model Construction and Techno-Economic Analysis of Current-Assisted Ammonia Synthesis

SSRN

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SSRN 2024年

作者： Song, Yongzheng Zeng, Shaojuan Zhang, Xiangping Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China College of Chemical and Engineering University of Chinese Academy of Sciences Beijing100049 China College of Chemical Engineering and Environment China University of Petroleum Beijing102249 China

Ammonia (NH3) as an essential chemical is produced on a large scale by Haber-Bosch process at high temperature and pressure. In this study, one-dimensional steady-state and dynamic quasi-homogeneous models were developed for the study of current-assisted NH3 synthesis reactor. The axial distributions of conversion, temperature, pressure and reaction rate were obtained by steady-state model of an adiabatic single-stage reactor. The axial distribution of NH3 concentration and temperature at different times was also obtained by dynamic model. In order to study the effect of heat transfer on reactor performance, three reactors including adiabatic quench cooling reactor (AQCR), adiabatic indirect cooling reactor (AICR), and auto-thermal reactor (ATR) with different heat transfer forms were compared. When the feed flow and NH3 output were consistent, the temperature and pressure changes of ATR along the catalytic bed were the most moderate. In addition, three NH3 synthesis loops were constructed by coupling the three reactors with condensation unit, and the techno-economic analysis was carried out. H2 and N2 costs were obtained directly from the literature, and the LCOA for the NH3 synthesis loop based on adiabatic quench cooling reactor (ACQR-CON) was the lowest, at 786.44 $ tNH3-1, which indicated that AQCR has great advantages in energy consumption and cost in the NH3 synthesis loop constructed with the condensation unit. © 2024, The Authors. All rights reserved.

关键词： Condensation

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Variants within KIF5B are associated with weight loss through mitochondrial transport alteration in sheep

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Journal of Genetics and Genomics 2024年第12期51卷 1513-1516页

作者： Jieran Chen Haitao Wang Tingting Li Yuting Zhang Yan Chen Na Zhang Hengqian Yang Zhichao Zhang Ziyuan Duan Xia Li Daxiang Wang Zhixiong He Fan Hu Jianfeng Gao Runlin Z.Ma Xun Huang Qiuyue Liu College of Life Sciences Shihezi UniversityShiheziXinjiang 832000China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Jiangsu Qianbao Animal Husbandry Co. LtdYanchengJiangsu 224050China CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionHunan Provincial Key Laboratory of Animal Nutritional Physiology and Metabolic ProcessInstitute of Subtropical AgricultureChinese Academy of SciencesChangshaHunan 410125China

Sheep(Ovis aries)is a key source of meat for humans,and their weight loss significantly impacts meat *** a few causative genes related to weight loss have been identified,the inheritance mechanisms and genetic pathways involved remain to be further *** selection can effectively fix substantial mutations in these genes,enhancing meat production in *** family member 5B(KIF5B)is a member of the kinesin-1protein family,which is made up of two kinesin heavy chains(KHCs)and two kinesin light chains(KLCs).Each kinesin motor head features an ATP pocket and a microtubule-binding domain,enabling it to function as a molecular motor(Hirokawa et al.,2009).

关键词： chains weight sheep

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Attention-Based Multiagent Graph Reinforcement Learning for Service Restoration

IEEE Transactions on Artificial Intelligence

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IEEE Transactions on Artificial Intelligence 2024年第5期5卷 2163-2178页

作者： Fan, Bangji Liu, Xinghua Xiao, Gaoxi Kang, Yu Wang, Dianhui Wang, Peng Xi'an University of Technology School of Electrical Engineering Xi'an710048 China Nanyang Technological University School of Electrical and Electronic Engineering 639798 Singapore University of Science and Technology of China Department of Automation School of Information Science and Technology Hefei230027 China China University of Mining and Technology Artificial Intelligence Research Institute Xuzhou221116 China Northeastern University State Key Laboratory of Integrated Automation for Process Industry Shenyang110819 China

With the ongoing integration of distributed energy resources, modern distribution systems are getting sufficient generation capacity to perform active restoration after outages without transmission system support. The model-based approaches are widely used in resolving service restoration problems, relying on accurate system models. Deep reinforcement learning is believed as an alternative solution for problem solving, although it has not been sufficiently explored. In this article, the service restoration process is described as a partially observable Markov decision process and a multiagent graph reinforcement learning approach based on attention is proposed to train multiple agents to coachieve the restoration goal to reinforce the system resilience in coping with extreme events. To consider the connections and correlations between nodes during the service restoration, the state of the active distribution network is defined by graph data that contains features of both topology and nodes. The perceived ability of the agents is empowered by graph convolutional networks during the feature extraction, supplying agents with more comprehensive data to learn more reasonable restoration strategies. In addition, the centralized training with attention is developed for multiagent systems, focusing on the relations between the agents to strengthen the teamwork capability. The performance of the proposed method is verified by a set of comparative studies on the IEEE-118 system with dispatchable generators, rooftop photovoltaics, and energy storage systems simultaneously. © 2023 IEEE.

关键词： Reinforcement learning

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Strategic Design and Facile Synthesis of Porous Hyper-Cross-Linked Phosphonium Bromide Microspheres for Catalyzing Co2 Conversion to Cyclic Carbonate

SSRN

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SSRN 2024年

作者： Li, Ming Liu, Ruixia Liu, Qi Liu, Ying Liu, Yifan Su, Qian Yang, Zifeng Li, Yunong Henan Institute of Advanced Technology Zhengzhou University Zhengzhou450001 China Beijing Key Laboratory of Ionic Liquids Clean Process Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and Engineering Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial Technology Henan University Zhengzhou450000 China

ABSTRACT: Heterogeneous ionic liquid (IL) catalysts with multiple active sites can be considered as the highly efficient catalyst for CO2 conversion to cyclic carbonates. It is extremely challenging to achieve the strategic design and precise control of multi-site polymeric ILs’ morphology and properties. In this work, we developed a novel and facile polymerization-ionization method employing flexible brominated monomers as raw materials (e.g. 4-bromo-1-butene) to successfully synthesize porous hyper-cross-linked phosphonium bromide-microspheres (PBr-microspheres), in order to break through the drawbacks of multi-step preparation and difficulty in microsphere forming. Compared with conventional bromine spheres of the same size, the specific surface area of the new synthetic bromine sphere is 16 times, and the average pore size is one-eighth, with 3-times CO2 adsorption capacity, with rich microporous structure and exposed active sites, excellent CO2 adsorption capacity and thermal stability. PBr-microspheres can achieve synergistic effect of physical adsorption and chemical interaction for CO2, thus enhancing the catalytic performance in CO2 conversion process, affording propylene oxide conversion of 99.7% and propylene carbonate selectivity of 99.9%, while the catalytic activity did not decrease significantly after reusing 8 runs. This facile controllable synthesis of PBr-microspheres with excellent catalytic performance provides a new idea for heterogeneous ILs catalyzed CO2 utilization. © 2024, The Authors. All rights reserved.

关键词： Carbon dioxide

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A Flame Localization Method Combing Visible-Light and Near-Infrared Cameras 6

A Flame Localization Method Combing Visible-Light and Near-I...

引用

6th International Conference on Intelligent Autonomous Systems, ICoIAS 2023

作者： Liu, Yuanhao Gong, Zhifan Zhu, Denghu Deng, Qiao Hu, Songyu Fu, Jianzhong Polytechnic Institute Zhejiang University Hangzhou China Company Haining China College of Mechanical Engineering Zhejiang University The State Key Laboratory of Fluid Power and Mechatronic Systems Hangzhou China College of Mechanical Engineering Zhejiang University Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province Hangzhou China

ISBN: (纸本)9798350371253

As common natural disasters, fire incidents seriously threaten human life and property. Flame target localization is a key step to enabling timely detection and effective control of the fire incident. In this study, a novel approach that combines visible-light and near-infrared cameras in a heterogeneous binocular camera system is proposed. High-precision localization of early small-scale fire targets is achieved through calibration of the heterogeneous binocular camera, stereo rectification, heterogeneous disparity matching, and depth computation. Experimental tests were conducted within a range of 1-5 meters, validating the effectiveness of the proposed algorithm. © 2023 IEEE.

关键词： Fires

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