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Journal of Energy Chemistry 2020年第4期29卷 33-39页

作者： Ruoyi Deng Zhangxun Xia Ruili Sun Suli Wang Gongquan Sun Division of Fuel Cells and Battery Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

Fabrication of novel electrode architectures with nanostructured ultrathin catalyst layers is an effective strategy to improve catalyst utilization and enhance mass transport for polymer electrolyte membrane fuel cells (PEMFCs).Herein,we report the design and construction of a nanostructured ultrathin catalyst layer with ordered Pt nanotube arrays,which were obtained by a hard-template strategy based on ZnO,via hydrothermal synthesis and magnetron sputtering for PEMFC application.Because of the crystallographically preferential growth of Pt (111) facets,which was attributed to the structural effects of ZnO nanoarrays on the Pt nanotubes,the catalyst layers exhibit obviously higher electrochemical activity with remarkable enhancement of specific activity and mass transport compared with the state-of-the-art randomly distributed Pt/C catalyst layer.The PEMFC fabricated with the as-prepared catalyst layer composed of optimized Pt nanotubes with an average diameter of 90(±10) nm shows excellent performance with a peak power density of 6.0W/mgPt at 1 A/cm^2,which is 11.6%greater than that of the conventional Pt/C electrode.

关键词： Catalyst layer Membrane electrode assembly platinum nanotube arrays Fuel cells

Influence of Surface Structure of platinum Electrodes on Electrooxidation of CO

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Chemical Research in Chinese Universities 2003年第4期19卷 474-480页

作者： XIA Xing-hua ZHANG Dai SONG Yan-yan State Key Laboratory of Coordination Chemistry Institute of Analytical ScienceNanjing UniveristyNanjing 210093P.R.China

The oxidation of CO on platinum electrodes in an acid solution was studied with the conventional electrochemical methods and the on-line electrochemical mass spectroscopy. It was found that this reaction is strongly determined by the surface morphology of platinum. The pretreatment of platinum electrodes can change the surface properties dramatically, in consequence it can improve the electrocatalytic activity towards the electrooxidation of CO. The existence of surface active sites on the roughened platinum electrodes can be used to explain its high electrocatalysis towards the oxidation of CO.

关键词： Electrocatalysis platinum Surface property Mechanism

STUDIES ON STRUCTURES OF SOME platinum COMPLEXES WITH 1, 1-CYCLOPROPANEDICAR BOXYLATE

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Science China Chemistry 1990年第11期33卷 1297-1303页

作者：董艳红冯骏材黄哲媛唐雯霞戴安邦周忠远郁开北 Coordination Chemistry Institute Nanjing University Nanjing 210008 PRC Chengdu Center of Analysis and Determination Academia Sinica Chengdu 610015 PRC

The crystal structure, of [Pt（NH3）2CPrDCA]. H2O （Ⅰ）, [Pt（CH3NH2）2CPrDCA] （Ⅱ）, and [Pt（dmbn） CPrDCA]·2.5H2O（Ⅲ）（where CPrDCA is 1, 1-cyclopropanedicarboxylate; dmbn is 2, 3-dimethyl-2, 3-butyldiamine） are determined. Compound Ⅰ crystallizes in the orthorhombic space group Pnma with the cell dimensions: a=6.517（2）, b=9.709（3）, c=14.205（5）, Z=4, R=0.058. Compound Ⅱ is monoclinic with space group P21/n, a=9.648（3）, b=8.720（2）, c=12.770（4）, β=107.12（2）, Z=4, R=0.059. Compound Ⅲ belongs to the monoclinic system space group P21/m with the cell dimensions: a=6.494（1）, b=19.638（3）, c=6.606（1）, β=94.44（1）, Z=2, R=0.038.Electronic structures of the complexes are studied and the correlstion between structure of the amine ligands and biological activity of the complexes is explored.

关键词： platinum complexes 1,1-eyclopropanedicarboxylate structure

Efficacy of platinum in advanced triple-negative breast cancer with germline BRCA mutation determined by next generation sequencing

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Chinese Journal of Cancer Research 2020年第2期32卷 149-162页

作者： Nan Wang Kun Li Wenfa Huang Weiyao Kong Xiaoran Liu Weijie Shi Feng Xie Hanfang Jiang Guohong Song Lijun Di Quanren Wang Jianjun Yu Huiping Li Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing) Department of Breast OncologyPeking University Cancer Hospital and InstituteBeijing 100142China Huidu Shanghai Medical Sciences Shanghai 201499China Jiangsu Hengrui Medicine Shanghai 200120China

Objective:To compare the efficacy of platinum-and non-platinum-based regimens as first-line treatment for advanced triple-negative breast cancer(TNBC)and analyze the relationship between their efficacy and BRCA gene status.Methods:Retrospectively analyze clinical data of 220 patients diagnosed pathologically with advanced TNBC and treated at the Department of Breast Oncology,Peking University Cancer Hospital from 2013 to 2018 and evaluate the efficacy of chemotherapy.A total of 114 patients had BRCA1/2 gene tested by next generation sequencing(NGS)using peripheral blood,and we analyzed the correlation between their efficacy and BRCA1/2 gene status.Results:Non-platinum-based chemotherapy(NPCT)was administered to 129 and platinum-based chemotherapy(PBCT)to 91 study patients.The clinical benefit rate(CBR)and median progression-free survival(PFS)were not statistically different between NPCT and PBCT groups.The median overall survival(OS)was 30.0 and 22.5 months for PBCT and NPCT group,respectively[P=0.090,hazard ratios(HR)=0.703].BRCA status was assessed in 114 patients,14 of whom had deleterious germline BRCA1/2(g BRCA)mutations(seven in each group).In PBCT group,the CBR was 85.7%and 35.1%for patients with and without deleterious g BRCA mutations,respectively(P=0.039).The median PFS were 14.9 and 5.3 months and median OS were 26.5 and 15.5 months for patients with and without deleterious g BRCA mutations,respectively(P=0.001,P=0.161,respectively).Patients in PBCT group had significantly greater rates of grade 3-4 anemia(5.5%vs.0%)and thrombocytopenia(8.8%vs.0%),whereas palmar-plantar erythrodysesthesia(12.4%vs.0%)and peripheral neuropathy(8.6%vs.1.1%)occurred more frequently in NPCT group.Conclusions:platinum-based regimens are more effective in patients with deleterious g BRCA mutations,but no difference in patients without BRCA gene mutations,so non-platinum is an option in patients without BRCA gene mutations considering the toxicity and side effect.And we recommend that patients with advanced TNBC should have BR

关键词： Advanced breast cancer triple negative BRCA mutation next-generation sequencing platinum efficacy

Solution-Processable platinum-Acetylide-based Small Molecular Bulk Heterojunction Solar Cells

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Chinese Journal of Chemistry 2015年第8期33卷 917-924页

作者： Hongyu Wang Ming Chen Bin Jiang Weiqi Tong Qun Qian Kunhua Lin Feng Liu Department of Chemistry Shanghai University Shanghai 200444 China State Key Laboratory of Molecular Engineering of Polymers (Fudan University) Shanghai 200433 China Materials Sciences Division Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

Two new solution-processable A＇-D-≡-Pt（PEt3）2-≡-D-A＇ structured molecules, namely, CNPT and DRPT, were synthesized and characterized for photovoltaic applications. Their optoelectronic properties were investigated by UV-vis absorption and cyclic voltammograms. Grazing-incidence wide-angle X-ray scattering and resonant soft X-ray scattering studies revealed that the DIO additive could enhance the crystallization of CNPT and reduce the size of phase separation of CNPT：PC71BM blends, while the addition of DIO showed little influence on the crystal- lization and morphology of the DRPT：PC71BM blends. Processing with the DIO additive, CNPT：PC71BM based solar cells showed a best power conversion efficiency of 1.4%, with a Jsc of 4.14 mA·cm^-2, a Voc of 0.75 V, and a fill factor of 45.4%.

关键词： platinum acetylide optoelectronic property morphology organic solar cells

SYNTHESIS OF POLYSILOXANE-SUPPORTED SELENAETHER platinum COMPLEX AND ITS CATALYTIC PROPERTY FOR HYDROSILYLATION OF OLEFINS

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Chinese Journal of Polymer Science 1996年第4期14卷 289-294页

作者：卢雪然陈臻段和平陈亦凡 Department of Chemistry Wuhan University Wuhan 430072 The Center of Analysis and Measurement Chinese Geology University Wuhan 430074

A new type of selenious polymer, silica-bound polybispropoxyethyl-selenidesilsesquinoxane, and its platinum complex were synthesized from bis-allyloxyethyl selenide via hydrosilylation with triethoxysilane, followed by immobilized on fumed silica, and then reacting with potassium chloroplatinite under nitrogen atmosphere in acetone. It was found that the platinum complex can catalyze the hydrosilylation of olefins with triethoxysilane effectively. The effects of the nature of the substrate, the amount of complex used, and the reaction temperature on the catalytic activity were investigated.

关键词： selenaether platinum hydrosilylation catalyst hydrosilylation polysiloxane

Vapour Treatment Method Against Other Pyro-and Hydrometallurgical Processes Applied to Recover platinum From Used Auto Catalytic Converters

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Acta Metallurgica Sinica(English Letters) 2013年第3期26卷 247-256页

作者： Agnieszka FORNALCZYK Mariola SATERNUS Silesian University of Technology Metallurgy Departmentul. Krasinskiego 8 40-019 Katowice Poland

Today more and more cars are produced every year. All of them have to be equipped with catalytic converters, the main role of which is to obtain substances harmless to the environment instead of exhausted gases. Catalytic converters contain platinum group metals （PGM） especially platinum, palladium and rhodium. The price of these metals and their increasing demand are the reasons why today it is necessary to recycle used auto catalytic converters. There are many available methods of recovering PGM metals from them, especially platinum. These methods used mainly hydrometallurgical processes; however pyrometallurgical ones become more and more popular. The article presents results of the research mainly concerning pyrometallurgical processes. Two groups of research were carried out. In the first one different metals such as lead, magnesium and copper were used as a metal collector. During the tests, platinum went to those metals forming an alloy. In other research metal vapours were blown through catalytic converter carrier （grinded or whole）. In the tests metals such as calcium, magnesium, cadmium and zinc were applied. As a result white or grey powder （metal plus platinum） was obtained. The tables present results of the research. Processing parameters and conclusions are also shown. To compare efficiency of pyrometallurgical and hydrometallurgical methods catalytic converter carrier and samples of copper with platinum obtained from pyrometallurgical method were solved in aqua regia, mixture of aqua regia and fluoric acid.

关键词： Used catalytic converters PGM platinum Recovery Pyrometallurgy Hydrometallurgy

Ultralow-temperature assisted synthesis of single platinum atoms anchored on carbon nanotubes for efficiently electrocatalytic acidic hydrogen evolution

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Journal of Energy Chemistry 2020年第12期29卷 280-292页

作者： Wenwu Zhong Wenguang Tu Zongpeng Wang Zhiping Lin Aijiao Xu Xiufang Ye Dongchu Chen Beibei Xiao Department of Materials Taizhou UniversityTaizhou 318000ZhejiangChina School of Energy and Power Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina School of Material Science and Energy Engineering Foshan UniversityFoshan 528001GuangdongChina School of Mechanical df Aerospace Engineering Nanyang Technological UniversitySingapore637459Singapore

Although platinum(Pt) is highly active for hydrogen evolution reaction(HER)[1], it is crucial to explore the effective approach for minimizing the Pt loading amount in the practical application. Herein, one ultralow-temperature solution reduction approach is developed to anchor atomically dispersed Pt atoms on carbon nanotubes(Pt-CNTs), which decelerates the diffusion rate of Pt Cl2-6 ion reached onto the carbon nanotubes and lowers the free energy of Pt atoms in the solution to reduce the probability of the Pt aggregation. The obtained Pt-CNTs exhibits a low overpotential of 41 mV@10 mA cm^(-2) for HER in acidic media. The calculation results revealed that the improvement of the electrocatalytic activity is contributed by the interaction between CNTs and Pt atoms, which descreases the the Pt d band cneter referred to the Fermi level and lowers the Gibbs free energy of H*adsorption. This work may provide one easy and convenient strategy for the large-scale use of Pt catalysts in practical applications.

关键词： Hydrogen evolution reaction Single-atom catalysts Ultralow-temperature platinum Carbon nanotubes

Synthesis and Luminescent Properties of platinum-Containing Polyynes with Tetraacetylenic 9,9-Dihexylfluorene Units

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Chinese Journal of Chemistry 2006年第8期24卷 1020-1025页

作者：柳利陈祖兴柳士忠黄维扬 Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules Faculty of Chemistry and Chemical Engineering Hubei University Wuhan Hubei 430062 China Department of Chemistry and Centre for Advanced Luminescence Materials Hong Kong Baptist University Waterloo Road Kowloon Tong Hong Kong China

Soluble platinum（Ⅱ） polyyne polymers trans-{Pt-[P（C4H8N）3]2（C≡C）2R（C≡C）2-}n and trans-{Pt-[P（C4H3O）3]2（C ≡C）2R（C ≡ C）2- }n （R = 9,9-dihexylfluorene-2,7-diyl） have been prepared in good yields by CuI-catalyzed polymerization involving the dehydrohalogenating coupling of trans-{PtCl2[P（C4H8N）3]2} and trans-{PtC12[P （C4H3O）312} with H（C≡C）2R（C≡C）2H, respectively. We report the optical spectroscopy of these polyplatinaynes. The influence of the heavy metal atom in these metal alkynyl systems on the intersystem crossing rate and the spatial extent of lowest singlet and triplet excitons was systematically characterized. Our investigations indicate that the organic triplet emissions can be harvested by the heavy-atom effect which enables efficient intersystem crossing from the S1 singlet excited state to the T1 triplet excited state.

关键词： platinum acetylide butadiyne fluorene triplet emission

Spectrophotometric determination of platinum after solid-liquid extraction with 1-(2-pyridylazo)-2-naphthol at 90°C

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Rare Metals 2004年第3期23卷 197-202页

作者： DONGYanjie GAIKe GONGXingxin DepartmentofChemistry LongdongUniversityQingyang745000China

An effective Spectrophotometric determination of platinum withl-(2-pyridylazo)-2-naphthol (PAN) using molten naphthalene as a diluent was studied. A green complexof platinum with PAN is formed at 90℃. In the range of pH 2.5-6.5, the complex is quantitativelyextracted into molten naphthalene. The organic phase is anhydrously dissolved in CHCl_3 to hedetermined spectrophotometrically at 690 nm against the reagent blank. Beer's law is obeyed over theconcentration range of 0.5-5.0 μg/μL. The molar absorptivity and Sandell's sensitivity are 1.6 x10^5 L·mol^(-1)·cm^(-1) and 0.0048 mg·cm^(-2), respectively. The optimum conditions fordetermination are obtained. The interferences of various ions are observed in detail. The method hasbeen applied to the determination of platinum in synthetic samples.

关键词： extraction molten naphthalene platinum spectrophotometry