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Heterogeneous h-BN@Cyclodextrin@Pd（II） Nanomaterial： Fabrication, Characterization and Application as a Highly Efficient and Recyclable Catalyst for C-C Coupling Reactions

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Chemical Research in Chinese Universities 2017年第5期33卷 811-815页

作者： SAng Rui CHEng Xu LI Weijian LUO pengfei ZHAng y.ng NIE Ruifang HAI Li WU y.ng Key Laboratory of Drug Targeting and Drug Delivery System of Education Ministry Department of Medicinal Chemistry West China School of Pharmacy Sichuan University Chengdu 610041 P. R. China

An efficient and ligand-free method for the Suzuki and Heck cross-coupling reactions has been success- fully developed using h-BN-supported palladium as the catalyst. This green methodology represents a cost-effective and operationally convenient process for the synthesis of biaryls, stilbenes and acrylates. Wide scope of substrates, good to excellent yields, low reaction time, water as solvent, ligand-free, non-toxicity and recyclability of the catalyst are the main merits of these protocols. In addition, the h-BN@y-CD@Pd（II） nanomaterial has been fully characte- rized by TG, SEM, IR, XRD, XPS and ICP-AES analysis. And it could be easily recovered and reused for at least nine times without any considerable loss of catalytic activity. Above all, this work demonstrates the possibility of using cyclodextrin-modified h-BN as an efficient support for the hydrophilic heterogeneous catalysts.

关键词： Hexagonal boron nitride Cyclodextrin Heterogeneous catalysis C-C cross coupling Water

Benzo[a]pyrene stimulates miR-650 expression to promote the pathogenesis of fatty liver disease and hepatocellular carcinoma via SOCS3/JAK/STAT3 cascades

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Journal of Molecular Cell Biology 2021年第8期13卷 556-564页

作者： y.ng Ge pengfei Gu Wenbo Wang Liyuan Cao Lulu Zhang Jingquan Li Wei Mu Hui Wang State Key Laboratory of Oncogenes and Related Genes Center for Single-cell OmicsSchool of Public HealthShanghai Jiao Tong University School of MedicineShanghai 200025China Department of Oncology Shanghai Tenth People’s HospitalSchool of MedicineTongji UniversityShanghai 200072China Institute of Military Health Management Second Military Medical UniversityShanghai 200433China CAS Key Laboratory of Nutrition Metabolism and Food SafetyShanghai Institute of Nutrition and HealthChinese Academy of SciencesShanghai 200031China

Modern diets,which often feature high levels of fat and charcoal-grilled meat,contribute to the pathogenesis of obesity and non-alcoholic fatty liver disease(NAFLD),resulting in liver cancer ***(a)pyrene(B[a]P)is a common environ-mental and foodborne pollutant found in smoke and fire-grilled foods,which can have an adverse effect on human *** carcinoma(HCC)is the fifth leading cause of cancer and the second leading cause of cancer-related deaths *** epidemiological studies suggest that both environmental risk factors and chronic liver injury including NAFL are important for HCC development,but the precise mechanisms linking eating habits to hepato-carcinogenesis remain *** the present study,we demonstrated that various miRNAs in B[a]P-exposed tumor cells contribute to tumor metastasis,among which miR-650 could be the most potent ***,we found that the suppressor of cytokine signaling 3(SOCS3)is directly regulated by miR-650 and its suppression regulates the activation of the Janus kinase/signal transducer and activator of transcription 3 (JAK/STAT3)*** findings reveal a possible adverse outcome pathway of SOCS3/JAK/STAT3 regulation in B[a]P-induced HCC *** results provide a better understanding of the adverse effects of chronic exposure to B[a]P on human health.

关键词： hepatocellular carcinoma microRNAs tumor metastasis S0CS3 prognostic biomarkers

19.3% Efficiency ternary organic solar cells enabled by the alkyl side-chain effect of guest non-fullerene acceptors

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Science China Chemistry 2024年第8期67卷 2686-2693页

作者： Hongqian Wang Sijian Wu Daobin y.ng Xueliang yu Shuncheng y.ng pengfei Ding Pengyu yan Zaifei Ma Jianfeng Zhang Ziyi Ge School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211China Zhejiang Engineering Research Center for Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension MaterialsCollege of Materials Science and EngineeringDonghua UniversityShanghai 201620China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

The effect of side-chain engineering of conjugated molecules on the morphology and device performance in binary organic solar cells has been widely investigated. However, this relationship has hardly been studied in the guest components of ternary organic solar cells. In this study, a family of non-fullerene guest acceptors, namely Xy-3, Xy-5 and Xy-7, with hydrogen substituent,straight and branched alkyl chains on the bithiophene units, respectively, were designed and synthesized to understand their effects on aggregation properties and device performance. The straight and branched alkyl chains on the bithiophene units result in sightly blue-shifted absorption compared to the hydrogen substituent and the Xy-7 demonstrates the most appropriate phase separation scale and the most balanced charge transport. Consequently, the OSCs based on D18:e C9:Xy-7 achieve a high shortcircuit current density(JSC) and fill factor(FF), while maintaining the enhancement of the open-circuit voltage(VOC) achieving an efficiency of 19.32%, exceeding those of D18:e C9, D18:e C9:Xy-3, D18:e C9:Xy-5(PCE:18.28%, 19.04%, 18.75%, respectively). These results highlight that the side-chain engineering of y series non-fullerene acceptors as the guest acceptors has great potential in optimizing morphology properties and promoting photovoltaic performance.

关键词： organic solar cells side chain engineering ternary strategy non-fullerene energy losses

Atmospheric particle-bound mercury in the northern Indo-Gangetic Plain region:Insights into sources from mercury isotope analysis and influencing factors

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Geoscience Frontiers 2022年第1期13卷 85-95页

作者： Junming Guo Lekhendra Tripathee Shichang Kang Qianggong Zhang Jie Huang Chhatra Mani Sharma pengfei Chen Rukumesh Paudyal Dipesh Rupakheti State Key Laboratory of Cryospheric Science Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China Himalayan Environment Research Institute(HERI) KathmanduNepal Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100039China Central Department of Environmental Science Tribhuvan UniversityKathmanduNepal

Lumbini is a world heritage site located in the southern plains region of Nepal, and is regarded as a potential site for evaluating transboundary air pollution due to its proximity to the border with India. In this study, 82 aerosol samples were collected between April 2013 and July 2014 to investigate the levels of particulate-bound mercury(PBM) and the corresponding seasonality, sources, and influencing *** PBM concentration in total suspended particulate(TSP) matter ranged from 6.8 pg m^(-3) to351.7 pg m^(-3)(mean of 99.7 ± 92.6 pg m^(-3)), which exceeded the ranges reported for remote and rural sites worldwide. The Hg content(PBM/TSP) ranged from 68.2 ng g^(-1) to 1744.8 ng g^(-1)(mean of 446.9 ±312.7 ng g^(-1)), indicating anthropogenic enrichment. The PBM levels were higher in the dry season(i.e.,winter and the pre-monsoon period) than in the wet season(i.e., the monsoon period). In addition, the δ^(202) Hg signature indicated that waste/coal burning and traffic were the major sources of Hg in Lumbini during the pre-monsoon period. Meanwhile, precipitation occurring during photochemical processes in the atmosphere may have been responsible for the observed Δ^(199) Hg values in the aerosol samples obtained during the monsoon period. The PBM concentration was influenced mostly by the resuspension of polluted dust during dry periods and crop residue burning during the post-monsoon period. The estimated PBM deposition flux at Lumbini was 15.7 lg m^(-2) yr^(-1). This study provides a reference dataset of atmospheric PBM over a year, which can be useful for understanding the geochemical cycling of Hg in this region of limited data.

关键词： Particle-bound mercury Seasonality Mercury isotopes Deposition flux Indo-Gangetic Plain

Engineering white blood cell membrane-camouflaged nanocarriers for inflammation-related therapeutics

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Bioactive Materials 2023年第5期23卷 80-100页

作者： Wanli Song pengfei Jia yaping Ren Junmiao Xue Bingqian Zhou Xinkai Xu yansheng Shan Jing Deng Qihui Zhou Department of Stomatology Institute for Translational MedicineThe Affiliated Hospital of Qingdao UniversityQingdao UniversityQingdao266003China Zhejiang Engineering Research Center for Tissue Repair Materials Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhouZhejiang 325000China Dental Biomaterials Technology Innovation Center of Qingdao Qingdao266003ShandongChina School of Stomatology Qingdao UniversityQingdao266003China Tianjin Enterprise Key Laboratory for Application Research of Hyaluronic Acid Tianjin300038China School of Rehabilitation Sciences and Engineering University of Health and Rehabilitation SciencesQingdao266071China

White blood cells(WBCs)play essential roles against inflammatory disorders,bacterial infections,and *** by nature,WBC membrane-camouflaged nanocarriers(WBC-NCs)have been developed to mimic the“dynamic”functions of WBCs,such as transendothelial migration,adhesion to injured blood vessels,etc,which make them promising for diverse medical ***-NCs inherit the cell membrane antigens of WBCs,while still exhibiting the robust inflammation-related therapeutic potential of synthetic nanocarriers with excellent(bio)physicochemical *** review summarizes the proposed concept of cell membrane engineering,which utilizes physical engineering,chemical modification,and biological functionalization technologies to endow the natural cell membrane with abundant *** addition,it highlights the recent progress and applications of WBC-NCs for inflammation targeting,biological neutralization,and immune ***,the challenges and opportunities in realizing the full potential of WBC-NCs for the manipulation of inflammation-related therapeutics are discussed.

关键词： White blood cell membrane-camouflaged nanocarriers Inflammation targeting Biological neutralization Immune modulation

Fabrication of Fe nanocomplex pillared few-layered Ti_(3)C_(2)T_(x)MXene with enhanced rate performance for lithium-ion batteries

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Nano Research 2021年第4期14卷 1218-1227页

作者： pengfei Huang Shunlong Zhang Hangjun y.ng Wentao y.ng Jianli Wang Rongnan Guo Weiqiang Han School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China

Pillaring technologies have been considered as an effective way to improve lithium storage performance of Ti_(3)C_(2)T_(x)***,the pillared hybrids suffer from sluggish Li^(+)diffusion kinetics and electronic transportation due to the compact multi-layered MXene structure,thus exhibiting inferior rate ***,the few-layered Ti_(3)O_(2)MXene(f-Ti_(3)C_(2)MXene)which is free from restacking can be prepared quickly based on the NH4^(+)ions ***,Fe nanocomplex pillared few-layered Ti_(3)C_(2)T_(x)(FPTC)heterostructures are fabricated via the intercalation of Fe ions into the interlayer of f-Ti_(3)C_(2)*** f-Ti_(3)C_(2)MXene which is immune to restacking can provide a highly conductive substrate for the rapid transport of Li+ions and electrons and possess adequate electrolyte accessible ***,f-Ti_(3)C_(2)MXene can efficiently relieve the aggregation,prevent the pulverization and buffer the large volume change of Fe nanocomplex during lithiation/delithiation process,leading to enhanced charge transfer kinetics and excellent structural stability of FPTC ***,the FPTC hybrids exhibit a high capacity of 535 mAh·g^(-1)after 150 cycles at 0.5 A·g^(-1)and an enhanced rate performance with 310 mAh·g^(-1)after 850 cycles at 5 A·g^(-1).This strategy is facile,universal and can be extended tofabricate various few-layered MXene-derived hybrids with superior rate capability.

关键词： Feions intercalation few-layered MXene pillared MXene lithium-ion batteries

Magnetron sputtering NbSe_(2)film as lubricant for space current-carry.ng sliding contact

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Friction 2023年第3期11卷 383-394页

作者： y.ng y.ng Lulu PEI Hongzhang ZHAng Kai FEng pengfei JU Wenshan DUAN Li JI Hongxuan LI Xiaohong LIU Huidi ZHOU Jianmin CHEN Key Laboratory of Science and Technology on Wear and Protection of Materials Lanzhou Insttute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China School of Physics and Electronic Engineering Northwest Normal UniversityLanzhou 730070China Division of Energy Storage Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry&Engineering Yantai UniversityYantai 264005China Shanghai Aerospace Equipment Manufacture Shanghai 200245China

This study demonstrates that magnetron-sputtered NbSe_(2)film can be used as a lubricant for space current-carry.ng sliding contact,which accommodates both metal-like conductivity and MoS_(2)-like *** at low pressure and low energy is performed to avoid the generation of the interference phase of NbSe_(3).The composition,microstructure,and properties of the NbSe_(2)films are further tailored by controlling the sputtering *** an appropriate current,the film changed from amorphous to crystalline,maintained a dense structure,and exhibited excellent comprehensive *** to the currently available electrical contact lubricating materials,the NbSe_(2)film exhibits a significant advantage under the combined vacuum and current-carry.ng *** friction coefficient decreases from 0.25 to 0.02,the wear life increases more than seven times,and the electric noise reduces approximately 50%.

关键词： NbSe_(2)films magnetron sputtering vacuum current-carry.ng tribological properties

CO2 electrolysis at industrial current densities using anion exchange membrane based electrolyzers

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Science China Chemistry 2020年第12期63卷 1711-1715页

作者： pengfei Wei Hefei Li Long Lin Dunfeng Gao Xiaomin Zhang Huimin Gong Guangyan Qing Rui Cai Guoxiong Wang Xinhe Bao State Key Laboratory of Catalysis Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China University of Chinese Academy of Sciences Beijing 100049China

Significant progress on electrocatalytic CO2 reduction reaction (CO2RR) has been achieved in recent ***,the research and development of electrolyzer device for CO2RR is *** we use anion exchange membrane to develop zerogap electrolyzers for *** electrochemical properties of the electrolyzers with Pd/C and Cu cathodes are *** Pd/C cathode shows a current density of 200 mA cm^-2with CO Faradaic efficiency of 98%and energy efficiency of 48.8%,while the Cu cathode shows a current density of 350 mA cm^-2with total CO2RR Faradaic efficiency of 81.9%and energy efficiency of 30.5%.This work provides a promising demonstration of CO2 electrolyzer using anion exchange membrane for CO2 electrolysis at industrial current densities.

关键词： CO2 electrolysis electrolyzer industrial current density anion exchange membrane energy efficiency Pd/C catalyst Cu catalyst

氧化物钙钛矿的光催化研究进展:CO_(2)还原、水裂解、固氮

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物理化学学报 2021年第6期37卷 76-106页

作者：王则鉴洪佳佳 Sue-Faye ng 刘雯黄俊杰陈鹏飞 Wee-Jun Ong 武汉理工大学材料科学与工程学院武汉430070 武汉理工大学铸材大学生创新创业基地武汉430070 School of Energy and Chemical Engineering Xiamen University MalaysiaSelangor Darul Ehsan 43900Malaysia 武汉理工大学硅酸盐建筑材料国家重点实验室武汉430070 厦门大学化学化工学院福建厦门361005

在寻求可再生能源供应及解决环境问题的迫切需求下,光电、光催化、电催化等领域中多种技术被开发以解决这一迫切问题。其中,光催化技术因其可将清洁太阳能转化为化学燃料的优越能力而备受关注。在层出不穷的光催化材料中,具有阳离子可... 详细信息

在寻求可再生能源供应及解决环境问题的迫切需求下,光电、光催化、电催化等领域中多种技术被开发以解决这一迫切问题。其中,光催化技术因其可将清洁太阳能转化为化学燃料的优越能力而备受关注。在层出不穷的光催化材料中,具有阳离子可替代性的钙钛矿氧化物(ABO_3)在电子信息、太阳能电池和光催化等领域具有极大的潜力。由于这类材料具有活性高、成本低、稳定性好、结构易调控等独特性能,钙钛矿氧化物光催化剂在水分解、二氧化碳还原转化、固氮等方面取得了广泛的应用。本文综述了光催化的结构与合成方法,重点介绍了光催化的应用,最后展望了光催化的未来发展前景。

关键词：氧化物钙钛矿光催化二氧化碳还原水裂解固氮