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Flexible interdigitated layered framework with multiple accessible active sites for high-performance CH_(3)I capture

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Science China Chemistry 2024年第5期67卷 1569-1577页

作者： Bo Tai Baoyu Li linwei he Zhonglin Ma Shujing Lin Mingxing Zhang Junchang Chen Fuqi Wu Long Chen Xing Dai Fuyin Ma Zhifang Chai Shuao Wang 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 InstitutionsSoochow UniversitySuzhou 215123China

The development of adsorbent materials for effective capture of radioactive iodomethane(CH_(3)I) from the off-gas of used nuclear fuel reprocessing, remains a significant and challenging line of research because currently state-of-art adsorbents still suffer from low binding affinity with CH_(3)I. here, we proposed a brand-new adsorption topological structure by developing a 2D interdigitated layered framework, named SCU-20, featuring slide-like channel with multiple active sites for CH_(3)I capture. The responsive rotating-adaptive aperture of SCU-20 enables the optimal utilization of all active sites within the pore for highly selective recognition and capture of CH_(3)I. A record-breaking CH_(3)I uptake capacity of 1.84 g/g was achieved under static sorption conditions with saturated CH_(3)I vapor. Both experimental and theoretical findings demonstrated that the exceptional uptake of SCU-20 towards CH_(3)I can be attributed to the confined physical electrostatic adsorption of F sites, coupled with the chemical nitrogen methylation reaction with uncoordinated N atoms of pyrazine. Moreover, dynamic CH_(3)I uptake capacity potentially allows for the capture of CH_(3)I in simulated real-world off gas reprocessing conditions. This study highlights the potential of SCU-20 as a promising candidate for efficient capture of iodine species and contributes to the development of effective solutions for radioactive iodine remediation.

关键词： 2D interdigitated layered framework iodomethane dual-sites electrostatic interaction physisorption and chemisorption

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Observed oceanic feedback to the atmosphere over the Kuroshio Extension during spring time and its possible mechanism

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Chinese Science Bulletin 2008年第12期53卷 1905-1912页

作者： XU HaiMing WANG linwei he JinHai Jiangsu Key Laboratory of Meteorological Disaster and College of Atmospheric Sciences Nanjing University of Information Scienceand Technology Nanjing 210044 China

High-resolution satellite measurements are used to study the air-sea interaction over the Kuroshio Extension (KE) region during spring time. There are two oceanic fronts in the KE region off the east coast of Japan. These fronts are generally associated with strong ocean currents, which may display unstable meander, resulting in remarkable warm sea surface temperature (SST) ridges and cold SST troughs. Analyses of these satellite observations reveal a significantly positive correlation between sea surface wind speed and its underlying SST along these fronts. This positive SST-wind correlation be-comes even more significant when strong meanders occur along the fronts. This positive SST-wind correlation indicates an ocean-to-atmosphere feedback over the KE region during spring time. A high-resolution regional atmospheric model is used to investigate the atmospheric response to SST changes along the two fronts.

关键词：大气圈黑潮海洋春季

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仿真猫头鹰多功能驱鸟器的研制与应用

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电力与能源 2024年第1期45卷 122-124页

作者：何林巍张伟陈勇迮怡风国网上海市电力公司青浦供电公司上海201707

随着生态环境的改善,鸟巢引起的配电电力线路故障频发。现有的传统驱鸟装置以风车式、占位式为主,防鸟效果不佳,且鸟类产生了适应性。为此研发了一款仿真猫头鹰多功能驱鸟器,实现形、光、色、味、声多功能驱鸟,且可带电安装。该装置防... 详细信息

随着生态环境的改善,鸟巢引起的配电电力线路故障频发。现有的传统驱鸟装置以风车式、占位式为主,防鸟效果不佳,且鸟类产生了适应性。为此研发了一款仿真猫头鹰多功能驱鸟器,实现形、光、色、味、声多功能驱鸟,且可带电安装。该装置防鸟效果显著,外形逼真、功能多样、安装方便。

关键词：电力线路仿真猫头鹰驱鸟器多功能驱鸟

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Tailoring Pore Structure and Morphologies in Covalent Organic Frameworks for Xe/Kr Capture and Separation

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Chemical Research in Chinese Universities 2021年第3期37卷 679-685页

作者： YUAN Mengjia WANG Xia CheN Long ZHANG Mingxing he linwei MA Fuyin LIU Wei WANG Shuao 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 InstitutionsSoochow UniversitySuzhou215123P.R.China School of Environment and Material Engineering Yantai UniversityYantai264005P.R.China

As a rising star among porous solid materials,covalent organic frameworks(COFs)with excellent properties including but not limit to facilely controllable structure,high porosity,and multi-chemical functionality represent significant potential for efficient 127Xe/85Kr capture and *** this study,through tuning the length of the organic ligands,two-dimensional(2D)COF materials with identical connection group but different pore properties,denoted as ATFG-COF and TpPa-COF with AA-stacking model and TpBD-COF with AB-stacking model were synthesized and tested for Kr and Xe adsorption for the first *** measurements indicate that the narrower pore apertures and higher porosity are conducive for COF materials to capture Xe and ***,the henry’s constant,isosteric heat of adsorption(Q_(st)),and ideal adsorbed solution theory(IAST)selectivity of ATFG-COF,the pore size of which is closest to the kinetic diameter of the Xe atom(0.41 nm)among 2D COF materials,were carried out based on the single component sorption *** results illustrate that the high isosteric heat values of Xe/Kr adsorption on ATFG-COF are 25 and 16 kJ/mol at room temperature,***’s law predicts that the selectivity factor of Xe to Kr is 6.07,consistent with the adsorption selectivity(ca.6)calculated based on the IAST.

关键词： Covalent organic framework Kr/Xe capture Kr/Xe separation Pore size Pore volume

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色纺纱用黏胶纤维的连续染色工艺与染色性能

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印染 2024年第8期50卷 35-38页

作者：洪剑寒金国周何林伟宋希雨方帅军韩潇郑国全绍兴文理学院纺织科学与工程学院浙江绍兴312000 浙江省清洁染整技术研究重点实验室浙江绍兴312000 绍兴国周纺织整理有限公司浙江绍兴312030

采用散纤维连续染色技术对黏胶散纤维进行连续浸渍染色后再冷堆固色,然后进行连续式水洗。分析了固色时间对黏胶纤维外观形貌、色泽指标及力学性能的影响,并对染色黏胶纤维成品的色牢度、pH和甲醛含量进行测试。结果表明:连续浸渍染色... 详细信息

采用散纤维连续染色技术对黏胶散纤维进行连续浸渍染色后再冷堆固色,然后进行连续式水洗。分析了固色时间对黏胶纤维外观形貌、色泽指标及力学性能的影响,并对染色黏胶纤维成品的色牢度、pH和甲醛含量进行测试。结果表明:连续浸渍染色后的黏胶纤维,经冷堆24 h固色后,可获得较好的匀染性;染色黏胶纤维的力学性能略有下降,其中强度下降约15%,断裂伸长率下降约16%;染色黏胶纤维的各项色牢度、pH和甲醛含量均符合要求。

关键词：黏胶散纤维连续染色固色时间色泽指标色牢度

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Radiation-induced one-pot synthesis of grafted covalent organic frameworks

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Science China Chemistry 2023年第6期66卷 1781-1787页

作者： Mingxing Zhang Mengjia Yuan Xiaofang Zhao Junchang Chen linwei he Qianhong Gao Jiangtao Hu Guozhong Wu Zhifang Chai Shuao Wang 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 InstitutionsSoochow UniversitySuzhou 215123China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China School of Environmental and Biological Engineering Nanjing University of Science&TechnologyNanjing 210094China

Post-synthetic functionalization of covalent organic frameworks(COFs)is an alternative way to enhance and broaden their properties and potential ***,the chemical functionalization of COFs is a great challenge because traditional procedures are often time-and energy-consuming,while the crystallinity of COFs can be damaged under harsh *** we report the in-situ introduction of functional graft chains onto the skeleton of COFs during the synthesis process through the combination of radiation-induced synthesis and graft polymerization techniques under ^(60)Co gamma-ray *** synthesis and functionalization of COFs are simultaneously accomplished in a chemical system under ambient conditions yielding a large number of different functionalized *** obtained carboxyl-functionalized COFs exhibit excellent radioactive uranium removal capabilities from aqueous solution with fast uptake dynamics,high adsorption capacity,and excellent selectivity over other competing metal ions.

关键词： covalent organic frameworks gamma ray radiation one-pot synthesis grafting functionalization uranium adsorption

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Efficient separation between trivalent americium and lanthanides enabled by a phenanthroline-based polymeric organic framework

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Chinese Chemical Letters 2022年第7期33卷 3429-3434页

作者： Afshin Khayambashi Long Chen Xue Dong Kai Li Zhipeng Wang linwei he Suresh Annam Lixi Chen Yaxing Wang Matthew V.Sheridan Chao Xu Shuao Wang 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 InstitutionsSoochow UniversitySuzhou 215123China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

Separation of the minor actinides(Am and Cm)from lanthanides in high-level liquid wastes(HLLW)is one of the most challenging chemical separation tasks known owing to their chemical similarities and is highly significant in nuclear fuel reprocessing plants because it could practically lead to sustainable nuclear energy by closing the nuclear fuel *** solid phase extraction is proposed to be a possible strategy but all reported sorbent materials severely suffer from limited stability and/or efficiency caused by the harsh conditions of high acidity coupled with intense ***,a phenanthroline-based polymeric organic framework(PhenTAPB-POF)was designed and tested for the separation of trivalent americium from lanthanides for the first *** to its fully conjugated structure,PhenTAPB-POF exhibits previously unachieved stability under the combined extreme conditions of strong acids and high irradiation *** americium partitioning experiment indicates that PhenTAPB-POF possesses an ultrahigh adsorption selectivity towards Am(Ⅲ)over lanthanides(e.g.,SFAm(Ⅲ)/Eu(Ⅲ)=3326)in highly acidic simulated HLLW and relatively fast adsorption kinetics in both static and dynamic ***(Ⅲ)can be almost quantitatively eluted from the PhenTAPB-POF packed-column using a concentrated nitric acid *** high stability and superior separation performance endow PhenTAPB-POF with the promising alternative for separating minor actinides over lanthanides from highly acidic HLLW streams.

关键词： Porous organic framework Americium Lanthanides Separation Stability

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PHBV改性涤纶染色棉喷气涡流混纺纱的开发

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棉纺织技术 2024年第9期52卷 29-33页

作者：缪璐璐孙国军贝仲杰董正梅方斌何林伟邹专勇浙江省清洁染整技术研究重点实验室浙江绍兴312000 绍兴国周纺织新材料有限公司浙江绍兴312085 浙江普娜拉纺织科技有限公司浙江绍兴312030 南京禾素时代抗菌材料科技集团有限公司江苏南京210000 绍兴国周纺织整理有限公司浙江绍兴312074

为实现低碳环保功能性色纺涡流纱的制备,将PHBV改性涤纶、冷轧堆染色棉纤维和普通涤纶混纺,通过两次纤维包混提高纤维的混和均匀度;开清棉工序遵循“勤抓少抓,多松少打,轻梳少落,充分混和,少伤纤维”的工艺原则,梳棉工序遵循“适中定量... 详细信息

为实现低碳环保功能性色纺涡流纱的制备,将PHBV改性涤纶、冷轧堆染色棉纤维和普通涤纶混纺,通过两次纤维包混提高纤维的混和均匀度;开清棉工序遵循“勤抓少抓,多松少打,轻梳少落,充分混和,少伤纤维”的工艺原则,梳棉工序遵循“适中定量,加强分梳,柔性梳理,中等隔距,快速转移”的工艺原则,以改善生条质量;选用三道并条工序,采用“轻定量,多并合,中隔距,慢速度,合理牵伸分配”的工艺原则,以提升熟条质量;喷气涡流纺工序根据原料特性,合理设置纺纱速度、喷嘴气压等工艺参数;同时严格控制生产各环节车间的温湿度,减少生产质量波动。最终成功纺出涤纶/棉/PHBV改性涤纶50/35/1519.7 tex喷气涡流纺色纺纱,色纺纱表现出优异的力学性能和良好的抗菌抑菌功能,断裂强度达到18.55 cN/tex,对金黄色葡萄球菌的抑菌率达到97.29%,对大肠杆菌的抑菌率达到98.42%。

关键词：喷气涡流纺色纺纱 PHBV改性涤纶冷轧堆染色工艺参数

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Chromate separation by selective crystallization

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Chinese Chemical Letters 2020年第7期31卷 1974-1977页

作者： Xijian Chen Xing Dai Rongzhen Xie Jie Li Afshin Khayambashi Lei Xu Chuang Yang Nannan Shen Yaxing Wang linwei he Yugang Zhang Chengliang Xiao Zhifang Chai Shuao Wanga State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and ProtectionCollaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China College of Chemical and Biological Engineering Zhejiang UniversityHangzhou 310027China

A new paradigm to remove toxic chromate anions from aqueous solution by crystallization of chromatewater clusters with imine-linked guanidinium cationic ligands is *** guanidium-based cationic ligand was easily prepared through the imine condensation of an alde hyde and aminoguanidine *** cationic imine-linked guanidinium liga nd(BBIG-CI)showed a high re moval capacity(292.5 mg/g)in the *** decontamination of chromate anions from the wastewater by this cationic ligand was resulted from an instantaneous *** produced guanidium chromate salts have an extremely low solubility(Ksp,BBIG=8.19×10^9).Such superior removal performance of these mate rials was attributed to the cha rge-assisted hydrogen bonding between the cationic ligand and chromate-water hydrate anions,which was revealed by the single-crystal X-ray diffraction analysis and density functional theory(DFT)*** addition,the succes s ful recove ry of the guanidium-based ligand makes it more attractive for real-world applications.

关键词： Chromate Crystallization Hydrogen bonding Chromate-water clusters Guanidinium ligand

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Improving the value of molecular testing:current status and opportunities in colorectal cancer precision medicine

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Cancer Biology & Medicine 2024年第1期21卷 21-28页

作者： Haiyun Li linwei Guo Chenchen Wang Xin Hu Ye Xu Department of Colorectal Surgery Fudan University Shanghai Cancer CenterShanghai 200032China Department of Oncology Shanghai Medical CollegeFudan UniversityShanghai 200032China Department of Gastrointestinal Medical Oncology Fudan University Shanghai Cancer CenterShanghai 200032China Precision Cancer Medical Center Affiliated with Fudan University Shanghai Cancer Center Shanghai 201315China

Colorectal cancer(CRC)is the second leading cause of cancer-related deaths *** radical resection with adjuvant chemotherapy remains the primary treatment choice for CRC,but the 5-year postoperative survival rate is only approximately 60%,and approximately one-third of patients with CRC experience recurrence within 2 years of ***,the transformation of high-throughput sequencing has accelerated the development of precision *** example,KRAS mutations indicate resistance to anti-epidermal growth factor receptor(EGFR)-targeted therapies in ***,molecular-guided individualized therapy has brought new promise in major clinical areas and challenges,such as novel biomarkers predicting sensitivity and resistance to immunotherapy for microsatellite stable(MSS)CRC.

关键词： cancer chemotherapy colorectal

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