Chengkun Bai, Bingdi Wang, Zhengshun Jiang, Chunying Lv, Zhenning Liu, Shiyu Wang, Song Liang and Hongying Zang
{"title":"Bioinspired electron carrier mediated transmembrane photocatalytic hydrogen evolution in silica colloidosomes†","authors":"Chengkun Bai, Bingdi Wang, Zhengshun Jiang, Chunying Lv, Zhenning Liu, Shiyu Wang, Song Liang and Hongying Zang","doi":"10.1039/D4QI02015D","DOIUrl":null,"url":null,"abstract":"<p >Inspired by the ordered processes of chloroplasts in photosynthesis involving coordinative linkages and efficient compartmentalization, a bioinspired compartmentalized photocatalytic system (BCPS) with an inorganic compartment is designed for photocatalytic hydrogen evolution with light driven electron carrier mediated cross-membrane energy transport. A typical BCPS comprises silica colloidosomes containing co-catalysts as microreactors, where positively charged <em>N</em>-methyl-4-cyanopyridinium (MCP<small><sup>+</sup></small>) serves as the electron carrier. The MCP<small><sup>+</sup></small> molecules harvest energy from photoexcited g-C<small><sub>3</sub></small>N<small><sub>4</sub></small>, and transit to electrically neutral species MCP<small><sup>0</sup></small>, which can pass the colloidosome. Driven by light, the MCP<small><sup>0</sup></small> diffuse across the membrane and transport electrons to H<small><sup>+</sup></small> for hydrogen evolution, in which Pt particles are employed as co-catalysts. Analogous to natural photosynthesis, hydrogen evolution occurs within compartments, separating light and dark reactions, protecting the dark reaction from interference during light harvesting and minimizing potential side effects. The system enables sustained evolution of hydrogen with a higher yield than that with the control catalysis in a bulk catalyst suspension. The dramatic influence of SDS on the hydrogen evolution was revealed, and a possible mechanism of electron carrier amount buffering was proposed.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/qi/d4qi02015d","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Inspired by the ordered processes of chloroplasts in photosynthesis involving coordinative linkages and efficient compartmentalization, a bioinspired compartmentalized photocatalytic system (BCPS) with an inorganic compartment is designed for photocatalytic hydrogen evolution with light driven electron carrier mediated cross-membrane energy transport. A typical BCPS comprises silica colloidosomes containing co-catalysts as microreactors, where positively charged N-methyl-4-cyanopyridinium (MCP+) serves as the electron carrier. The MCP+ molecules harvest energy from photoexcited g-C3N4, and transit to electrically neutral species MCP0, which can pass the colloidosome. Driven by light, the MCP0 diffuse across the membrane and transport electrons to H+ for hydrogen evolution, in which Pt particles are employed as co-catalysts. Analogous to natural photosynthesis, hydrogen evolution occurs within compartments, separating light and dark reactions, protecting the dark reaction from interference during light harvesting and minimizing potential side effects. The system enables sustained evolution of hydrogen with a higher yield than that with the control catalysis in a bulk catalyst suspension. The dramatic influence of SDS on the hydrogen evolution was revealed, and a possible mechanism of electron carrier amount buffering was proposed.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.