Langford Cooper, Izadifard Maryam, Radwan Emad, Achari Gopal
Department of Chemistry, University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada.
Department of Chemistry University of Calgary, 2500 University Dr. NW, Calgary, AB T2N 1N4, Canada.
Molecules. 2014 Nov 26;19(12):19557-72. doi: 10.3390/molecules191219557.
Adsorb and shuttle (A/S) and interfacial charge transfer are the two major strategies for overcoming recombination in photocatalysis in this era of nanoparticle composites. Their relationships are considered here. A review of key literature is accompanied by a presentation of three new experiments within the overall aim of assessing the relation of these strategies. The cases presented include: A/S by a high silica zeolite/TiO2 composite, charge transfer (CT) between phases in a TiO2/WO3 composite and both A/S and CT by composites of TiO2 with powered activated carbon (AC) and single-walled carbon nanotubes (SWCNT). The opportunities presented by the two strategies for moving toward photocatalysts that could support applications for the removal of contaminants from drinking water or that lead to a practical adsorbent for organics that could be regenerated photocatalytically link this discussion to ongoing research here.
吸附与穿梭（A/S）以及界面电荷转移是纳米颗粒复合材料时代光催化中克服复合的两种主要策略。本文将探讨它们之间的关系。在回顾关键文献的同时，还展示了三个新实验，总体目的是评估这些策略之间的关系。所呈现的案例包括：高硅沸石/TiO₂ 复合材料的 A/S、TiO₂/WO₃ 复合材料中相之间的电荷转移（CT）以及 TiO₂ 与粉末状活性炭（AC）和单壁碳纳米管（SWCNT）复合材料的 A/S 和 CT。这两种策略为开发光催化剂带来了机遇，这些光催化剂可用于去除饮用水中的污染物，或开发出一种可通过光催化再生的实用有机吸附剂，从而将本讨论与当前正在进行的研究联系起来。
