TiO2-based heterojunction photocatalysts for photocatalytic reduction of CO2 into solar fuels
TiO2-based heterojunction photocatalysts for photocatalytic reduction of CO2 into solar fuels
复制标题
TiO2 基异质结光催化剂用于将 CO2 光催化还原为太阳能燃料
DOI：
10.1039/c8ta08879a
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发表时间：
2018
影响因子：
11.9
通讯作者：
Ye Wang
中科院分区：
文献类型：
--
作者：
Longfu Wei;Changlin Yu;Qinghong Zhang;Hong Liu;Ye Wang
进入世纪，全球气候变暖和能源短缺已成为全球性的重大问题。到目前为止，利用CO2作为碳源用于燃料和化学品的生产已经受到越来越多的关注。光催化还原CO2为太阳能燃料已成为最有前途和环境友好的方法之一。在两个半导体之间形成具有匹配能带结构的异质结结构可以有效地促进电荷转移，抑制光生电子和空穴的复合，从而提高光催化性能。本文综述了TiO 2基异质结光催化剂的设计、制备及其在光催化还原CO2制备太阳能燃料方面的研究进展。研究了几种典型的TiO 2基异质结光催化剂的光催化性能，p-n、非p-n、Z型、TiO_2-金属、TiO_2-碳、相、面等异质结。反应模式和一些典型的光反应器，如，浆态光反应器、光纤光反应器、整体式光反应器和光流控微反应器等。最后，我们提出了设计新型光催化剂和光反应器以改善CO2光催化还原的机遇和挑战。
In the twenty-first century, global warming and energy shortage have become major global issues. Up to now, the utilization of CO2 as a carbon source for the production of fuels and chemicals has received increased attention. The photocatalytic reduction of CO2 into solar fuels has turned out to become one of the most promising and environmentally friendly methods. Well-defined heterojunction structures between two semiconductors with matching electronic band structures can effectively facilitate charge transfer and suppress the recombination of photogenerated electrons and holes, resulting in enhanced photocatalytic performance. This review focuses on the design and fabrication of TiO2-based heterojunction photocatalysts and their recent progresses into developing solar fuels via the photocatalytic reduction of CO2. The photocatalytic performances of a number of typical TiO2-based heterojunction photocatalysts, e.g., p–n, non-p–n, Z-scheme, TiO2–metal, TiO2–carbon, phase, facet, and other heterojunctions, are summarized and analyzed. The reaction mode and some typical photoreactors, e.g., slurry photoreactor, optical-fiber photoreactor, monolith photoreactor, and optofluidic microreactor, are also presented and analyzed. In the end, we propose a perspective on the opportunities and challenges to design new types of photocatalysts and photoreactors for improving the photocatalytic reduction of CO2.