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SSRN 2024年

作者： Xie, Xincheng Tang, Zhongfeng Ling, Xinlong Tian, Feng Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai201800 China National Key Laboratory of Materials Behavior and Evaluation Technology in Space Environment Harbin Institute of Technology Harbin150001 China School of Biological and Chemical Engineering Guangxi University of Science and Technology Liuzhou545006 China

The surface hydrophobicity of Ethylene-tetrafluoroethylene copolymer(ETFE) film limits its application in functional membranes. However, the surface energy of ETFE film is extremely low and the interface compatibility is poor, which makes it difficult to modify the surface hydrophilicity. In this work, acrylic acid was grafted onto ETFE film by co-irradiation grafting method. The effects of adsorbed dose on the structure and properties of grafted ETFE films were investigated by the different methods. The contact angle of the sample was reduced from 102° to 44°and the hydrophilicity is improved due to the grafting. The contact angle, breaking strength and elongation at break are 68°, 13.0 MPa and 72.6 %, respectively. The surface of ETFE film was successfully grafted with acrylic acid to regulate its hydrophilicity. With the increase of absorbed dose, the microstructure of ETFE film was destroyed, the radius of gyration decreased, the natural crystallization area was destroyed, and the crystallinity decreased to 25%. The destruction of the structure leads to a decrease in mechanical properties. When the absorbed dose is 60 kGy, it exhibits good hydrophilicity and mechanical properties. It clarified the effect of adsorbed dose on the structure of ETFE grafted acrylic acid, and helped to expand the application of ETFE in battery separators and other fields. © 2024, The Authors. All rights reserved.

关键词： Grafting (chemical)

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Transition Metal Carbonitride MXenes Anchored with Pt Sub-Nanometer Clusters to Achieve High-Performance Hydrogen Evolution Reaction at All pH Range

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Nano-Micro Letters 2025年第5期17卷 525-539页

作者： Zhihao Lei Sajjad Ali CI Sathish MuhammadIbrar Ahmed Jiangtao Qu Rongkun Zheng Shibo Xi Xiaojiang Yu MBHBreese Chao Liu Jizhen Zhang Shuai Qi Xinwei Guan Vibin Perumalsamy Mohammed Fawaz Jae-Hun Yang Mohamed Bououdina Kazunari Domen Ajayan Vinu Liang Qiao Jiabao Yi Global Innovative Center of Advanced Nanomaterials College of EngineeringScience and EnvironmentUniversity of NewcastleCallaghanNSW 2308Australia Energy Waterand Environment LabCollege of Humanities and SciencesPrince Sultan University11586 RiyadhSaudi Arabia School of Physics University of SydneySydneyNSW 2000Australia Institute of Chemical and Engineering Sciences ASTARSingapore 627833Singapore Singapore Synchrotron Light Source National University of SingaporeSingapore 117603Singapore Institute for Frontier Materials Deakin UniversityWaurn PondsVictoria 3216Australia Guangdong Provincial Key Laboratory of Natural Rubber Processing Agricultural Products Processing Research InstituteChinese Academy of Tropical Agricultural SciencesZhanjiang 524001People’s Republic of China College of Chemistry Environmental Engineering Shenzhen UniversityShenzhen 518060GuangdongPeople’s Republic of China Research Initiative for Supra-Materials Interdisciplinary Cluster for Cutting Edge Research Shinshu University4-17-1WakasatoNagano-shiNagano 380-8533Japan School of Physics University of Electronic Science and Technology of ChinaChengdu 610054People’s Republic of China Department of Chemical Engineering and Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management(IRC-HTCM) King Fahd University of Petroleum and Minerals31261 DhahranSaudi Arabia

Transition metal carbides,known as MXenes,particularly Ti_(3)C_(2)T_(x),have been extensively explored as promising materials for electrochemical ***,transition metal carbonitride MXenes with high nitrogen content for electrochemical reactions are rarely *** this work,transition metal carbonitride MXenes incorporated with Pt-based electrocatalysts,ranging from single atoms to sub-nanometer dimensions,are explored for hydrogen evolution reaction(HER).The fabricated Pt clusters/MXene catalyst exhibits superior HER performance compared to the single-atom-incorporated MXene and commercial Pt/C catalyst in both acidic and alkaline *** optimized sample shows low overpotentials of 28,65,and 154 mV at a current densities of 10,100,and 500 m A cm^(-2),a small Tafel slope of 29 m V dec^(-1),a high mass activity of 1203 mA mgPt^(-1)and an excellent turnover frequency of 6.1 s^(-1)in the acidic *** functional theory calculations indicate that this high performance can be attributed to the enhanced active sites,increased surface functional groups,faster charge transfer dynamics,and stronger electronic interaction between Pt and MXene,resulting in optimized hydrogen absorption/desorption toward better *** work demonstrates that MXenes with a high content of nitrogen may be promising candidates for various catalytic reactions by incorporating single atoms or clusters.

关键词： MXene Hydrogen evolution reaction Single atom Two-dimensional nanosheets Density functional theory

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A Localization Method of High Energy Transients for All-sky Gamma-ray Monitor

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Research in Astronomy and Astrophysics 2024年第10期24卷 25-35页

作者： Yi Zhao Wangchen Xue Shaolin Xiong Qi Luo Yuanhao Wang Jiacong Liu Heng Yu Xiaoyun Zhao Yue Huang Jinyuan Liao Jianchao Sun Xiaobo Li Qibin Yi Ce Cai Shuo Xiao Shenglun Xie Chao Zheng Yanqiu Zhang Chenwei Wang Wenjun Tan Zhiwei Guo Chaoyang Li Zhenghua An Gang Chen Yanqi Du Min Gao Ke Gong Dongya Guo Jiang He Jianjian He Bing Li Gang Li Xinqiao Li Jing Liang Xiaohua Liang Yaqing Liu Xiang Ma Rui Qiao Liming Song Xinying Song Xilei Sun Jin Wang Ping Wang Xiangyang Wen Hong Wu Yanbing Xu Sheng Yang Dali Zhang Fan Zhang Hongmei Zhang Peng Zhang Shu Zhang Zhen Zhang Shijie Zheng Keke Zhang Xingbo Han Haiyan Wu Hu Tai Hao Geng Gaopeng Lu Wei Xu Fanchao Lyu Hongbo Zhang Fangjun Lu Shuangnan Zhang Department of Astronomy Beijing Normal UniversityBeijing 100875China Key Laboratory of Particle Astrophysics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China College of Physics Hebei Normal UniversityShijiazhuang 050024China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guizhou Normal UniversityGuiyang 550001China School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550001China Institute of Astrophysics Central China Normal UniversityWuhan 430079China College of physics Sciences Technology Hebei UniversityBaoding 071002China Physics and Space Science College China West Normal UniversityNanchong 637002China School of Computing and Artificial Intelligence Southwest Jiaotong UniversityChengdu 611756China College of Electronic and information Engineering Tongji UniversityShanghai 201804China Innovation Academy for Microsatellites of Chinese Academy of Sciences Shanghai 201304China National Space Science Center Chinese Academy of SciencesBeijing 100190China School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Electronic Information School Wuhan UniversityWuhan 430072China Key Laboratory of Transportation Meteorology of China Meteorological Administration Nanjing Joint Institute for Atmospheric SciencesNanjing 210000China Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Fast and reliable localization of high-energy transients is crucial for characterizing the burst properties and guiding the follow-up *** based on the relative counts of different detectors has been widely used for all-sky gamma-ray *** are two major methods for this count distribution localization:χ^(2)minimization method and the Bayesian *** we propose a modified Bayesian method that could take advantage of both the accuracy of the Bayesian method and the simplicity of the χ^(2)*** comprehensive simulations,we find that our Bayesian method with Poisson likelihood is generally more applicable for various bursts than the χ^(2)method,especially for weak *** further proposed a location-spectrum iteration approach based on the Bayesian inference,which could alleviate the problems caused by the spectral difference between the burst and location *** method is very suitable for scenarios with limited computation resources or timesensitive applications,such as in-flight localization software,and low-latency localization for rapidly follow-up observations.

关键词： methods:data analysis methods:analytical (stars:)gamma-ray burst:general

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An Observational Study of Short-Cycle Lightning Outbreaks in the Inner Core of Typhoon Hato (2017) Before Landfall

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Geophysical Research Letters 2023年第15期50卷 e2023GL104100-e2023GL104100页

作者： Xu, Yuanyuan Huang, Hao Li, Qingqing Zhao, Kun Chan, Pak-Wai Ming, Jie Fan, Xueqi Yang, Zhengwei Zhang, Wenjuan Lyu, Weitao Duan, Yihong Song, Ping Key Laboratory of Mesoscale Severe Weather/MOE School of Atmospheric Science Nanjing University Nanjing China Key Laboratory of Radar Meteorology China Meteorology Administration Nanjing China Key Laboratory of Meteorological Disaster of the Ministry of Education Nanjing University of Information Science and Technology Nanjing China Hong Kong Observatory Kowloon China State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences Beijing China National Key Laboratory on Electromagnetic Environment Effects and Electro- Optical Engineering College of Field Engineering Army Engineering University of PLA Nanjing China

This study analyzes microphysical signatures relevant to the short-cycle lightning activity in the inner core of Typhoon Hato (2017) before landfall in China. Observations reveal that the lightning bursts were accompanied by enhanced inner-core convection with a behavior cycle of about 3 hr. The coupling between wavenumber-2 vortex Rossby waves (VRWs) and shear-forced convective asymmetries resulted in a local updraft enhancement. Furthermore, supercooled liquid water droplets invigorated a striking enhancement of graupel via riming immediately above the freezing level, further enhancing charge separation and lightning generation outside the eyewall. Furthermore, when similar phase-locking was associated with other propagating VRWs, graupel and updraft volumes were significantly boosted, leading to short-cycle lightning outbreaks in the inner core. © 2023 The Authors.

关键词： Shear flow

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Hybrids of LiMn2O4 nanoparticles anchored among carbon nanotubes as efficient cathode material for high-performance rechargeable hybrid aqueous batteries 2

Hybrids of LiMn2O4 nanoparticles anchored among carbon nanot...

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2nd International Conference on Electronic Materials and Information engineering, EMIE 2022

作者： Yuan, Guanghui Jia, Jia Huang, Ting Mi, Ben Yin, Zhaozhuo Wang, Zhaozhe Xu, Qiong Department of Chemistry and Chemical Engineering Ankang Research Centre of New Nano-materials Science and Technology Ankang University Shaanxi Ankang725000 China Huaqin Power Technology Company Limited The National and Local Joint Engineering Research Center for Deep Processing of Vanadium Products Shaanxi Ankang725000 China Shaanxi Key Laboratory of Catalysis School of Chemical & Environment Science Shaanxi University of Technology Shaanxi Hanzhong723001 China

ISBN: (纸本)9781713865629

A binary LiMn2O4/carbon nanotubes (LMO/CNT) composite is effectively synthesized through a simplistic hydrothermal method. Morphologies, structures and the electrochemical properties of LMO/CNT hybrid as cathode material are detailed studied in rechargeable hybrid aqueous batteries (ReHABs). The about 300 nm LiMn2O4 particles with spheroid morphology are anchored among the wrinkled and twisted carbon nanotubes. The LMO/CNT electrode in ReHAB displays better rate capability and excellent cyclability than pristine LMO electrode. The reversible discharge capacities of LMO/CNT electrode in ReHAB are 128.5 mAh/g, 125.3 mAh/g, 118.1 mAh/g, 107.1 mAh/g, 92.5 mAh/g and 71.9 mAh/g at the current density of 0.2 C, 0.5 C, 1.0 C, 2.0 C, 5.0 C and 10.0 C, respectively. The strengthened electrochemical properties are profited from the energetic impacts of carbon nanotubes, which knit an interlaced electrical conductive network, insuring the ceaseless electron pathway in solid material and restraining the volumetric change of LiMn2O4 particles during the lithium ions intercalation and deintercalation. © VDE VERLAG GMBH ∙ Berlin ∙ Offenbach.

关键词： Lithium compounds

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Deep insight of the efficiency and fouling mechanisms in reciprocating and biogas sparging anaerobic membrane bioreactor for food waste digestion

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Chemical engineering Journal 2025年 518卷

作者： Liang, Muxiang Chen, Jing Li, Qian Wu, Xiaohui Zheng, Min Zan, Feixiang Chen, Guanghao School of Environmental Science and Engineering Hubei Key Laboratory of Multi-media Pollution Cooperative Control in Yangtze Basin Huazhong University of Science and Technology Wuhan430074 China Key Lab of Northwest Water Resource Environment and Ecology MOE Xi'an University of Architecture and Technology Xi'an710055 China Water Research Centre School of Civil and Environmental Engineering University of New South Wales SydneyNSW2052 Australia School of Civil and Environmental Engineering Water Technology Center Hong Kong Branch of Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution The Hong Kong University of Science & Technology Hong Kong

Anaerobic membrane bioreactors (AnMBRs) offer a promising solution for high-solid organic waste digestion, but their widespread application is limited by severe membrane fouling. This study investigates the fouling mechanisms in a novel reciprocating AnMBR (rAnMBR) compared to a conventional biogas sparging AnMBR (sAnMBR) under increasing organic loading rates (OLR) from 2 to 6 g COD/L/d, with a corresponding reduction in hydraulic retention time to 11.7 days. Both systems exhibited similar methanogenic performance;however, the rAnMBR demonstrated significantly better fouling resistance, maintaining filtration for 33 and 20 days at low and high OLRs, respectively, whereas the sAnMBR fouled within 11 and 4 days. Sludge characterization revealed that the rAnMBR retained a higher fraction of microparticles (1.5–10 μm), which reduced sludge filterability. Particle image velocimetry showed improved hydrodynamics in the rAnMBR, leading to slower and more uniform cake layer formation. Microbial analysis indicated distinct communities between the systems, with the rAnMBR favouring filamentous and helix-shaped bacteria, potentially contributing to its observed fouling behaviour. These findings suggest that reciprocation, as a self-antifouling strategy, is a viable alternative for mitigating membrane fouling in high-solid food waste digestion, offering improved operational stability and lower maintenance costs. This study provides valuable insights for optimizing AnMBR design and advancing sustainable waste-to-energy technologies. © 2025 Elsevier B.V.

关键词： Sludge digestion

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Enhancement of Fe-Nb Interaction by Acid Modification Over So42-Feox-Nb2o5 Catalyst for Nh3 Selective Catalytic Reduction of Nox

SSRN

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SSRN 2023年

作者： Xu, Siyuan Mao, Yufeng Yu, Xin Xie, Yu Wen, Junjie Li, Zhiyu Li, Zonglin Wang, Mingzhi Zhang, Qiulin Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming650500 China National-Regional Engineering Center for Recovery of Waste Gases from Metallurgical and Chemical Industries Kunming University of Science and Technology Kunming650500 China School of Environment and Energy Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control South China University of Technology Guangzhou510006 China

A series of iron-based composite oxide catalysts, modified with acid and niobium, were produced for the purpose of selective catalytic reduction of NOx with NH3 (NH3-SCR) via co-precipitation. The obtained SO42-FeOx-Nb2O5 (S-FeNbOx) catalyst exhibited significantly better SCR performance than the unmodified FeOx catalyst, with a NOx conversion above 90% and N2 selectivity higher than 95% in the temperature range of 275−450 °C. The XPS, H2-TPR, and DRIFTs characterization results suggest that the addition of Nb not only modifies the electronic structure and alleviates the reducibility but also enhances the surface acidity of the catalysts. The sulfuric acid modification of FeOx-Nb2O5 catalyst promotes the formation of redox acid sites. The DRIFTs experimental results revealed that the combining sulfuric acid and niobium modifications resulted in a significant increase in the amount of Brønsted acid sites, and also led to a blue shift of the IR band related to the Lewis acid sites, implying the existence of a synergistic effect of the two modification methods. The creation of redox-acid sites significantly enhances the adsorption and activation capacity of NH3 on the catalyst surface. Additionally, it causes the NH3-SCR reaction to primarily follow the E-R mechanism on the catalyst. © 2023, The Authors. All rights reserved.

关键词： Sulfuric acid

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Research on Artificial Bee Colony Method Based Complete Coverage Path Planning Algorithm for Search and Rescue Robot 5

Research on Artificial Bee Colony Method Based Complete Cove...

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5th International Symposium on Autonomous Systems, ISAS 2022

作者： Yang, Liu Xing, Bowen Li, Cai Wang, Wugui Shanghai Ocean University College of Engineering Science and Technology Shanghai201306 China South China Sea Oceanographic Research Institute Chinese Academy of Sciences National Key Laboratory for Tropical Marine Environment Guangzhou510308 China China Ship Development and Design Center Wuhan430064 China

ISBN: (纸本)9781665487085

In terms of the low efficiency of search and rescue robot's complete coverage path planning in the complex working environment, based on the traditional neural network optimization strategy, a complete coverage path planning strategy based on Artificial Bee Colony algorithm is proposed. Using the data collected by lidar or other sensors to build an environmental map model, with search and rescue robot as the main body, a neural network forward propagation model combined with an artificial bee colony algorithm was established, and the artificial bee colony method was used to optimize the parameters of the neural network by unsupervised training. It has improved the operability and portability of search and rescue robot working in different environments. And on this basis, an evaluation equation for evaluating the effect of complete coverage path planning is proposed, so as to automatically evaluate the quality of the generated complete coverage path during training. The simulation results show that for the unknown environment, based on the improved path planning algorithm, it has higher efficiency when performing the complete coverage path planning mission of the search and rescue robot. © 2022 IEEE.

关键词： Motion planning

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Atomically Dispersed Fe-Co Bimetallic Catalysts for the Promoted Electroreduction of Carbon Dioxide

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Nano-Micro Letters 2022年第2期14卷 79-93页

作者： Zhangsen Chen Gaixia Zhang Yuren Wen Ning Chen Weifeng Chen Tom Regier James Dynes Yi Zheng Shuhui Sun Institut National de la Recherche Scientifique-Énergie Matériaux et Télécommunications VarennesQC J3X 1P7Canada School of Materials Science and Engineering University of Science and Technology100083 BeijingPeople’s Republic of China Canadian Light Source University of SaskatchewanSaskatoonSK S7N 2V3Canada Research Institute of Photocatalysis State Key Laboratory of Photocatalysis on Energy and EnvironmentFuzhou UniversityFuzhou 350116People’s Republic of China

The electroreduction reaction of CO_(2)(ECO_(2)RR)requires high-performance catalysts to convert CO_(2)into useful *** metal-based atomically dispersed catalysts are promising for the high selectivity and activity in ECO_(2)*** work presents a series of atomically dispersed Co,Fe bimetallic catalysts by carbonizing the Fe-introduced Co-zeolitic-imidazolate-framework(C-Fe-Co-ZIF)for the syngas generation from ECO_(2)*** synergistic effect of the bimetallic catalyst promotes CO *** to the pure C-Co-ZiF,C-Fe-Co-ZIF facilitates CO production with a CO Faradaic efficiency(FE)boost of 10%,with optimal FE_(CO)of 51.9%,FE_(H_(2))of 42.4%at-0.55 V,and CO current density of 8.0 mA cm^(-2)at-0.7 V versus reversible hydrogen electrode(RHE).The H_(2)/CO ratio is tunable from 0.8 to 4.2 in a wide potential window of-0.35 to-0.8 V versus *** total FE_(CO+H_(2))maintains as high as 93%over 10 *** proper adding amount of Fe could increase the number of active sites and create mild distortions for the nanoscopic environments of Co and Fe,which is essential for the enhancement of the CO production in ECO_(2)*** positive impacts of Cu-Co and Ni-Co bimetallic catalysts demonstrate the versatility and potential application of the bimetallic strategy for ECO_(2)RR.

关键词： CO_(2)reduction Electrocatalysis Syngas production Cobalt Iron Bimetallic catalysts

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Turning Trash into Treasure: Recycling Ti3c2tx Oxide Through Channel engineering Towards High-Capacity Supercapacitors

SSRN

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SSRN 2023年

作者： Liu, Xudong Liu, Yong Dong, Shangli Zhang, Xuefeng Wei, Yidan Lv, Lu He, Sirui School of Material Science and Engineering Harbin Institute of Technology Harbin150001 China Huizhou University Guangdong516007 China National Key Laboratory of Materials Behavior and Evaluation Technology in Space Environment Harbin Institute of Technology Harbin150001 China

The channel (hole and interlayer) engineering on 2D MXenes has been proved to be an effective strategy to solve the issues of congested ion transport pathway, limited active sites and sluggish ion transport kinetics caused by restacking of MXene nanosheets, which extended the application in the field of energy storage. Herein, a simple channel engineering strategy was proposed to treat the long-term stored Ti3C2T x , resulting formation of an interlayer-expanded holey Ti3C2T x film via etching out Ti3C2T x oxides. The in situ oxides expanded the interlayer spacing and created holes on the Ti3C2T x nanosheets, which formed channels in all directions. The interlayer-expanded holey Ti3C2T x film showed outstanding electrochemical performance, with both high capacity (448 F/g at 2 mV/s) and good cyclic stability (95.3% retention after 5000 cycles). Importantly, this strategy effectively recycles the waste MXenes that are oxidized by long-term storage, which embodies the concept of low-carbon environmental protection and promoting the industrialization process of MXenes. © 2023, The Authors. All rights reserved.

关键词： Supercapacitor

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