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Increasing Effectiveness of Photogenerated Carriers by in Situ Anchoring of Cu2O Nanoparticles on a Nitrogen-Doped Porous Carbon Yolk–Shell Cuboctahedral Framework
ACS Catalysis ( IF 12.9 ) Pub Date : 2018-03-13 00:00:00 , DOI: 10.1021/acscatal.7b04219
Xiguang Han 1 , Xiaoxiao He 2 , Liming Sun 1 , Xiao Han 1 , Wenwen Zhan 1 , Jianhua Xu 2 , Xiaojun Wang 1 , Jinquan Chen 2
Affiliation  

An efficient photocatalyst should maximize utilization of sunlight and minimize recombination of photogenerated electron–hole pairs. Thus, searching for a simple approach to develop low-cost efficient photocatalysts to improve the utilization ratio of sunlight and boost the photogenerated charge carrier lifetime is very important and challenging. In this article, anchoring Cu2O nanoparticles (NPs) in situ on a nitrogen-doped porous carbon yolk–shell cuboctahedral (CNPC) framework has been successfully carried out by direct derivation from a benzimidazole-modified Cu-btc MOF (btc = benzene-1,3,5-tricarboxylate, MOF = metal–organic framework) template. The prepared CNPC showed high photoredox catalysis in forming C–C bond reactions, resulting from the prolonged lifetime of photogenerated electrons and holes, multiple reflections of light by the yolk–shell structure, and improved stability and dispersibility of Cu2O NPs. Our study provided a simple way to designing low-cost, efficient heterostuctured photocatalysts.

中文翻译:

通过在氮掺杂的多孔碳黄-壳立方八面体框架上原位锚固Cu 2 O纳米颗粒来提高光生载流子的效率

高效的光催化剂应最大限度地利用阳光,并最大程度减少光生电子-空穴对的重组。因此,寻找一种简单的方法来开发低成本高效的光催化剂以提高太阳光的利用率并延长光生载流子的寿命是非常重要且具有挑战性的。在本文中,锚固Cu 2通过直接从苯并咪唑改性的Cu-btc MOF(btc =苯-1,3,5-苯)直接衍生成功地在掺氮多孔碳卵黄壳立方八面体(CNPC)框架上原位制备了O纳米颗粒(NPs)。三羧酸盐,MOF =金属-有机骨架)模板。制备的CNPC在形成C–C键反应中显示出高的光氧化还原催化作用,这是由于光生电子和空穴的寿命延长,卵黄壳结构对光的多次反射以及Cu 2 O NPs的稳定性和分散性提高所致。我们的研究为设计低成本,高效的异结构光催化剂提供了一种简单的方法。
更新日期:2018-03-13
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