: Binary complex carriers containing heteroatom-conjugated polymers (Poly(EPE) or Poly(BPE)) and double-layered hollow carbon nanospheres (DLHCs) with different contents were prepared by in situ oxidative polymerization using the heterocyclic triplets containing nitrogen and sulfur (the structure was capped with 3,4-ethylenedioxythiophene and pyridazine as intermediate unit) as monomers. The structures and electrochemical properties of all binary compounds were characterized by UV-vis and CV, respectively, and Poly(EPE)/30 wt% DLHCs and Poly(BPE)/50 wt% DLHCs were identified as the complexes with the best ratio of monomer to inorganic phase. Subsequently, Pt NPs were loaded into this complex matrix to obtain Poly(EPE)/DLHCs/Pt and Poly(BPE)/DLHCs/Pt composites. The effect of polymer-modified carbon materials, which containing pyridazine and pyridine rings as catalyst support, on the catalytic oxidation properties of methanol as well as the relationship between structure and performance were investigated. The results indicated that Poly(EPE)/DLHCs/Pt shows larger electrochemical active area (ECSA, 69.27 m 2 g −1 ) and higher mass current density (961.63 mA mg −1 ).
以含氮和含硫的杂环三联体(结构以3,4-乙烯二氧噻吩和吡啶为中间单元)为单体，采用原位氧化聚合法制备了含杂原子共轭聚合物(Poly(EPE)或Poly(BPE))和不同含量的双层中空碳纳米球(dlhc)的二元配合物载体。采用UV-vis和CV分别对化合物的结构和电化学性能进行了表征，确定了Poly(EPE)/30 wt% dlhc和Poly(BPE)/50 wt% dlhc为单体与无机相比例最佳的配合物。随后，将Pt NPs加载到复合基体中，得到Poly(EPE)/DLHCs/Pt和Poly(BPE)/DLHCs/Pt复合材料。研究了以吡啶嘧啶和吡啶环为催化剂载体的聚合物改性碳材料对甲醇催化氧化性能的影响以及结构与性能之间的关系。结果表明，Poly(EPE)/ dlhc /Pt具有较大的电化学活性面积(ECSA为69.27 m 2 g−1)和较高的质量电流密度(961.63 mA mg−1)。
{"title":"Preparation of polymer/hollow carbon spheres/platinum catalysts and its performance study","authors":"Mariyam Niyaz, Xiong Liu, Fangfei Liu, Tursun Abdiryim, Ruxangul Jamal","doi":"10.1360/ssc-2022-0259","DOIUrl":"https://doi.org/10.1360/ssc-2022-0259","url":null,"abstract":": Binary complex carriers containing heteroatom-conjugated polymers (Poly(EPE) or Poly(BPE)) and double-layered hollow carbon nanospheres (DLHCs) with different contents were prepared by in situ oxidative polymerization using the heterocyclic triplets containing nitrogen and sulfur (the structure was capped with 3,4-ethylenedioxythiophene and pyridazine as intermediate unit) as monomers. The structures and electrochemical properties of all binary compounds were characterized by UV-vis and CV, respectively, and Poly(EPE)/30 wt% DLHCs and Poly(BPE)/50 wt% DLHCs were identified as the complexes with the best ratio of monomer to inorganic phase. Subsequently, Pt NPs were loaded into this complex matrix to obtain Poly(EPE)/DLHCs/Pt and Poly(BPE)/DLHCs/Pt composites. The effect of polymer-modified carbon materials, which containing pyridazine and pyridine rings as catalyst support, on the catalytic oxidation properties of methanol as well as the relationship between structure and performance were investigated. The results indicated that Poly(EPE)/DLHCs/Pt shows larger electrochemical active area (ECSA, 69.27 m 2 g −1 ) and higher mass current density (961.63 mA mg −1 ).","PeriodicalId":21640,"journal":{"name":"SCIENTIA SINICA Chimica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43402395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhibing Zhang, Yadong Li, Suojiang Zhang, Tao Zhang, Can Li, W. Fei, Xianghong Cao, Yi Chen
{"title":"纳微尺度流体传质与反应特性探索","authors":"Zhibing Zhang, Yadong Li, Suojiang Zhang, Tao Zhang, Can Li, W. Fei, Xianghong Cao, Yi Chen","doi":"10.1360/ssc-2023-0188","DOIUrl":"https://doi.org/10.1360/ssc-2023-0188","url":null,"abstract":"","PeriodicalId":21640,"journal":{"name":"SCIENTIA SINICA Chimica","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47733740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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