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Recent progress of radionuclides separation by porous materials

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science china Chemistry 2024年第11期67卷 3515-3577页

作者： Yinghui Xie long Yu long Chen Cheng Chen Li {2. fenglei Liu Yun Liao Peng Zhang Tao Chen Yihui Yuan Yuexiang Lu Boyang huang Hui Yang Suhua {2. Shuao {2. Lijian Ma feng Luo Yunhai Liu Baowei Hu Hongqing {2. Duoqiang Pan Wenkun Zhu Ning {2. Zhe {2. Liang Mao Shengqian Ma Xiangke {2. Guangdong Provincial Key Laboratory for Green agricultural Production and Intelligent Equipment School of Environmental Science and Engineering Guangdong University of Petrochemical Technology School of Life science Shaoxing University college of Environmental science and Engineering North China Electric Power University State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions Soochow University college of Chemistry Sichuan University School of Chemistry and Materials science East China University of Technology School of Chemistry and Chemical Engineering University of South China Frontiers science Center for Rare Isotopes Lanzhou University State Key Laboratory of Environment-friendly Energy Materials National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety Sichuan Civil-military Integration Institute School of National Defence & Nuclear Science and TechnologySouthwest University of Science and Technology State Key Laboratory of Marine Resource Utilization in South china Sea Collaborative Innovation Center of Marine Science and Technology Hainan University Institute of Nuclear and New Energy Technology Tsinghua University State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Department of Chemistry University of North Texas

The separation of radionuclides is critical for the sustainable development of nuclear energy. It is urgent to design and prepare functionalized materials for efficient radionuclides separation. Porous materials are considered excellent candidates for the separation of radionuclides under complex conditions due to their high specific surface areas, tunable pore structures and controllable functionalities. In this review, we summarized the design, preparation and functionalization of porous materials and their application for separation of radionuclides in the past five years, discussed the separation performance and analyzed the structure-activity relationship between various radionuclides and porous materials, and systematically clarified their characterization and mechanism of different type porous materials. We also introduced the detection, irradiation and chemical toxicity of different reflective radionuclides.

关键词： porous materials radionuclides detection separation radiotoxicity interaction mechanism

Intense Intramolecular Charge Transfer Endows Cyanated Polymer with Broad Absorption,Intensified Light-Harvesting,long-Lived Exciton,and Superior Photovoltaic Property

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CCS Chemistry 2024年第9期6卷 2318-2332页

作者： Jinming Chen Huijuan wang Songmin Mo Hui Chen Xinyu He Mingbin Su Dongyan Li Yonghong Xiao Zhiqi wang Fanwei ye Mingde Li Li Dang Xiao-Chun {2. Chang-Zhi Li feng He Qinghe Wu Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Department of ChemistryShantou UniversityShantou 515063 Department of Chemistry Shenzhen Grubbs InstituteSouthern University of Science and TechnologyShenzhen 518055 Department of Polymer science and Engineering Zhejiang UniversityHangzhou 310027 Chemistry and Chemical Engineering Guangdong Laboratory Shantou 515063 Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and TechnologyShenzhen 518055

The donor–acceptor(D–A)copolymers,which exhibit wide broad absorption and intensified light-harvesting,are highly captivating for applications in solar conversion and ***,designing a polymer structure that can achieve these photophysical properties simultaneously remains a ***,we report two novel cyanated units 4-cyanobenzo[1,2.b:6,5-b′:3,4-c″]trithiophene(CBT)and 4,6-dicyanobenzo[1,2.b:6,5-b′:3,4-c″]trithiophene(C2.T)and their corresponding polymers,PCBT and *** interestingly,the PC2.T exhibited a broad absorption band with full width at half maxima(FWHM)of its absorption spectra,almost twice wider than PCBT and benchmark polymers PM6 and ***,the PC2.T demonstrated intensified light-harvesting and long-lived *** in-depth investigation unveiled that the presence of dicyano substitutions induced a strong intramolecular charge transfer(ICT),which,in turn,resulted in the formation of favorable photophysical ***,PC2.T-based polymer solar cells(PSCs)exhibited an efficiency of 18.06%,which was a record-setting efficiency for cyanated *** study suggests an efficient strategy for enhancing ICT to design polymers toward favorable photophysical properties and excellent photovoltaic performance.

关键词： intramolecular charge transfer broad absorption band dicyanobenzotrithiophene cyanated polymer polymer solar cell

Structures and Dynamics of a Two-Dimensional Confined Dusty Plasma System

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Communications in Theoretical Physics 2005年第6X期44卷 1081-1086页

作者： huang feng LIU Yan-Hong {2. long college of science China Agricultural University Beijing 100083 China Institute of Physics the Chinese Academy of Sciences Beijing 100080 China

The influence of the confining potential strength and temperature on the structures and dynamics of a two-dimensional (2.) dusty plasma system is investigated through molecular dynamic (MD) simulation. The circular symmetric confining potential leads to the nonuniform packing of particles, that is, an inner core with a hexagon lattice surrounded by a few outer circular shells. Under the appropriate confining potential and temperature, the particle trajectories on middle shells form a series of concentric and nested hexagons due to tangential movements of *** square displacement, self-diffusion constant, pair correlation function, and the nearest bond are used to characterize the structural and dynamical properties of the system. With the increase of the confining potential, the radial and tangential movements of particles have different behaviors. With the increase of temperature, the radial and tangential motions strengthen, particle trajectories gradually become disordered, and the system gradually changes from a crystal or liquid state to a gas state.

关键词： dusty plasma molecular dynamic simulation structures dynamics

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木质素纤维改良膨胀土的冻融特性及微观机理

农业工程学报 2024年第2期40卷 263-272页

作者：朱锐王燕杰黄英豪张文邢玮周峰南京工业大学交通运输工程学院南京211816 陆军工程大学土木工程博士后科研流动站南京210007 江苏省高铁安全工程技术研究开发中心南京210031 南京水利科学研究院岩土工程研究所南京210024

高寒区复杂环境场是渠基膨胀土劣化的主要原因,渠基膨胀土改良是保障渠系工程安全运行的重要手段。为探索冻融循环下膨胀土的纤维改良效果,以北疆某引调水工程为背景,开展木质素纤维改良膨胀土的系列室内试验,探明冻融循环下改良膨胀土... 详细信息

高寒区复杂环境场是渠基膨胀土劣化的主要原因,渠基膨胀土改良是保障渠系工程安全运行的重要手段。为探索冻融循环下膨胀土的纤维改良效果,以北疆某引调水工程为背景,开展木质素纤维改良膨胀土的系列室内试验,探明冻融循环下改良膨胀土的体变特性、抗压强度特性、抗拉强度特性及其作用机理。结果表明:相较于未改良试样,冻融循环下改良试样的体积变化率减小了2.%~37%;在15次冻融循环后,未改良试样抗剪强度衰减率在42.2.以上,而改良试样抗剪强度衰减率则显著低于2..1%;反复冻融作用并未显著影响试样的压应力-应变关系曲线特征,而是造成试样拉应力-应变关系由“线弹性增长-强化-软化”特征发展为“线弹性增长-软化”特征;木质素纤维的掺入可以有效改善冻融循环下膨胀土的体变特性、抗剪强度特性、抗压强度特性、抗拉强度特性,且当掺量和长度分别为2.和1 mm时,木质素纤维改良膨胀土冻融特性的作用效果最为显著。同时,冻融循环下改良试样内部结构损伤程度显著低于未改良试样,原因在于木质素纤维的存在限制了冻融循环下土颗粒间的错动、重分布,在一定程度上保证了膨胀土内部结构完整性。该研究为木质素改良膨胀土提供参考。

关键词：木质素纤维膨胀土冻融循环力学特性微观结构

Robust and High-Wettability Pristine Poly(ether ether ketone) Nanofiber Separator for Heat-Resistant and Safe Lithium-Ion Battery

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Chinese Journal of Polymer science 2023年第12期41卷 1937-1946,I0009页

作者： Xin-Ke Dai feng-Shan Yu Jia-Wei Wen Chun-Xia wang Xin-{2. Ma wang Yang Guo-Yong huang Hai-Mu ye college of New Energy and Materials China University of PetroleumBeijing 102249China State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing 102249China

Separator is a pivotal component of lithium-ion batteries(LIBs)and determines the electrochemical performance and ***,with the increase in energy density and application scenarios,commercial polyolefin separators are increasingly unable to undertake heavy responsibility of battery safety ***,a new kind of nanofiber separator based on poly(ether ether ketone)(PEEK)with excellent thermal stability,self-extinguishing,and superior electrochemical properties is *** inheritance of intrinsic properties from raw PEEK materials and optimized hot-pressing operation endows the separator with high robustness and wettability,showing tensile strength of 15.8 MPa and a contact angle of 17.2..The high thermal stability of PEEK can ensure the separator to preserve the structural integrity and microstructure at temperatures beyond 300℃,and the excellent self-extinguishing peculiarity of PEEK capacitates the high safety of ***,benefitting from high porosity and polar surface,the PEEK separator shows high electrolyte uptake of 2.5.5%and exhibits a wider electrochemical window and faster lithium-ion transport number than commercial polyolefin ***,cells assembled with PEEK separator display better performance than the ones with PE separator,and the PEEK LIB has been successfully used to light up a lamp at a high temperature of 150℃.

关键词： Separator Lithium-ion battery Heat-resistance PEEK

Cluster Rotation in an Unmagnetized Dusty Plasma

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Chinese Physics Letters 2013年第11期30卷 128-132页

作者： huang feng LIU Yan-Hong CHEN Zhao-Yang {2. long ye Mao-Fu college of science China Agricultural UniversityBeijing 100083 School of Physics and Optoelectronic Engineering Ludong UniversityYantai 264025 Department of Physics Beijing University of Chemical TechnologyBeijing 100029 Institute of Physics Chinese Academy of SciencesBeijing 100190

Rotation of dust clusters in an unmagnetized dusty plasma under different gas pressures is experimentally *** containing different numbers of charged dust grains are found in different horizontal *** mechanism behind the dust rotation is investigated by using molecular dynamics *** experimental and simulation results show that the radial confinement potential plays an important role in determining the properties of the cluster rotation under given gas pressure or temperature.

关键词： temperature rotation determining

Polarization and Aggregation of Grains in a Dusty Plasma System

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Polarization and Aggregation of Grains in a Dusty Plasma Sys...

Fixation of CO_2.by electrocatalytic reduction to synthesis of dimethyl carbonate in ionic liquid using effective silver-coated nanoporous copper composites

第十六届全国等离子体科学技术会议暨第一届全国等离子体医学研讨会

作者： feng huang Yanhong Liu Zhaoyang Chen {2. wang maofu ye college of science China Agricultural University School of Physics and Optoelectronic Engineering Ludong University Department of Physics Beijing University of Chemical Technology Institute of Physics Chinese Academy of Science

Large non-spherical dust grains with different shapes have been observed in an rf discharge plasma *** mechanism of the formation of non-spherical grains is *** plays an important role in the aggregation and coagulation of the non-spherical *** aggregation process of these non-spherical grains can be characterized by the evolution of fractal dimension in the grain growth *** investigation results are useful for understanding the formation of dust grains in astronomical as well as industry *** can also be a guide for theoretical modeling of the growth of large grains with irregular shapes.

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Chinese Chemical Letters 2010年第8期21卷 987-990页

作者： Xuan Yun wang Su Qin Liu Ke long {2. Qiu Ju feng De Lai ye Bing Liu Jin long Liu Guan Hua Jin college of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

With high surface area,open porosity and high efficiency,a catalyst was prepared and firstly employed in electrocatalytic reduction of CO2.and electrosynthesis of dimethyl carbonate（DMC）.The electrochemical property for electrocatalytic reduction of CO2.in ionic liquid was studied by cyclic voltammogram（CV）.The effects of various reaction variables like temperature,working potential and cathode materials on the electrocatalytic performance were also investigated.80%yield of DMC was obtained under the optimal reaction conditions.

关键词： Electrocatalytic Carbon dioxide Nanoporous Dimethyl carbonate Ionic liquid

Incidence and prognosis of olfactory and gustatory dysfunctions related to SARS-CoV-2.Omicron strain infection in china:A national multicenter survey of 35,566 individuals

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第2期10卷 113-120页

作者： Meng-Fan Liu Rui-Xia Ma Xian-Bao Cao Hua Zhang Shui-Hong Zhou Wei-Hong Jiang Yan Jiang Jing-Wu Sun Qin-Tai Yang Xue-Zhong Li Ya-Nan Sun Li Shi Min wang Xi-Cheng Song Fu-Quan Chen Xiao-Shu Zhang Hong-Quan Wei Shao-Qing Yu Dong-Dong Zhu Luo Ba Zhi-Wei Cao Xu-Ping Xiao Xin Wei Zhi-Hong Lin feng-Hong Chen Chun-Guang Shan Guang-Ke wang Jing ye Shen-Hong Qu Chang-Qing Zhao Zhen-Lin wang Hua-Bin Li feng Liu Xiao-Bo Cui Sheng-Nan ye Zheng Liu Yu Xu Xiao Cai Wei huang Ru-Xin Zhang Yu-Lin Zhao Guo-Dong Yu Guang-Gang Shi Mei-Ping Lu Yang Shen Yu-Tong Zhao Jia-Hong Pei Shao-Bing Xie long-Gang Yu ye-Hai Liu Shao-Wei Gu Yu-Cheng Yang Lei Cheng Jian-feng liu Graduate School of Beijing university of Chinese Medicine BeijingChina Department of Otorhinolaryngology Head and Neck Surgery China-Japan Friendship HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery The First People's Hospital of YinchuanYinchuanChina Department of Otorhinolaryngology The First People's Hospital of Yunnan ProvinceKunmingChina Department of Otorhinolaryngology The First Affiliated Hospital of Xinjiang Medical UniversityUrumqiChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of Zhejiang University School of MedicineHangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Xiangya Hospital Central South UniversityChangshaChina Department of Otorhinolaryngology Head and Neck Surgery The Affiliated Hospital of Qingdao UniversityQingdaoChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of USTCHefeiChina Department of Otorhinolaryngology Head and Neck Surgery The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhouChina Department of Otorhinolaryngology Head and Neck Surgery Qilu Hospital of Shandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery The Second Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Otolaryngology The Second Hospital of Shandong UniversityShandong UniversityJinanChina Department of Otorhinolaryngology Head and Neck Surgery Peking University People's HospitalBeijingChina Department of Otorhinolaryngology Head and Neck Surgery Yantai Yuhuangding HospitalQingdao UniversityYantaiChina Department of Otorhinolaryngology Head and Neck Surgery Xijing HospitalThe Fourth Military Medical UniversityXi'anChina Gansu Provincial Center for Disease Control and Prevention LanzhouChina Department of Otorhinolaryngology Head and Neck Surgery The First Affiliated Hospital of China Medical UniversityShenyangChina Department of Otorhinolaryngology Head and Neck Surgery Tongji Hospit

Objective:This cross-sectional study aimed to determine the epidemiology of olfactory and gustatory dysfunctions related to COVID-19 in ***:This study was conducted by 45 tertiary Grade-A hospitals in *** and offline questionnaire data were obtained from patients infected with COVID-19 between December 2.,2.2.,and February 2.,*** collected information included basic demographics,medical history,smoking and drinking history,vaccination history,changes in olfactory and gustatory functions before and after infection,and other postinfection symptoms,as well as the duration and improvement status of olfactory and gustatory ***:Complete questionnaires were obtained from 35,566 *** overall incidence of olfactory and taste dysfunction was 67.75%.Being female or being a cigarette smoker increased the likelihood of developing olfactory and taste *** received four doses of the vaccine or having good oral health or being a alcohol drinker decreased the risk of such *** infection,the average olfactory and taste VAS scores were 8.41 and 8.51,respectively;after infection,they decreased to 3.69 and 4.2. and recovered to 5.83 and 6.55 by the time of the *** median duration of dysosmia and dysgeusia was 15 and 12.days,respectively,with 0.5%of patients having symptoms lasting for more than 2. *** overall self-reported improvement rate was 59.16%.Recovery was higher in males,never smokers,those who received two or three vaccine doses,and those that had never experienced dental health issues,or chronic accompanying ***:The incidence of dysosmia and dysgeusia following infection with the SARS-CoV-2.virus is high in *** and prognosis are influenced by several factors,including sex,SARS-CoV-2.vaccination,history of head-facial trauma,nasal and oral health status,smoking and drinking history,and the persistence of accompanying symptoms.

关键词： epidemiologic studies incidence olfactory disorders prognosis SARS-CoV-2 taste disorders