Dry reforming of CH4 by photothermal catalysis is considered to be a promising approach to produce syngas. It can not only store useful chemical energy, but also consume CO2 and CH4 to mitigate the greenhouse effect. Herein, we anchor Ag/AgBr on CsPbBr3 through an in situ ion exchange route to construct a composite material, which exhibits an excellent photothermal synergistic effect in the dry reforming of CH4. The CO production rate of the 7 wt% Ag/AgBr/CsPbBr3 composite through photothermal catalysis is 456.15 μmol g−1 h−1, which is approximately 79 times and 195 times higher than that through pure thermal catalysis and pure photocatalysis, respectively. Moreover, the CO production rate of 7 wt% Ag/AgBr/CsPbBr3 is 7.25 times higher than that of pristine CsPbBr3. The mutual promotion of the thermochemical and photochemical processes significantly improves the energy utilization efficiency and reaction kinetics, leading to high photothermal catalytic efficiency. This work indicates that the inorganic halide perovskite shows excellent photothermal catalytic activity, and provides an alternative way to extend the application range of perovskite materials.
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机译：通过光热催化对CH4进行干燥的改革被认为是产生合伙的一种有前途的方法。它不仅可以存储有用的化学能，还可以消耗二氧化碳和CH4来减轻温室效果。本文中，我们通过构造复合材料的原位交换途径将CSPBBR3锚定在CSPBBR3上，该材料在CH4的干重构中表现出极好的光热协同作用。通过光热催化的7 wt％AG/AGBR/CSPBBR3复合材料的CO生产速率分别为456.15μmolG -1 H -1，大约是通过纯热催化和纯光催化的79倍和195倍。此外，7 wt％AG/AGBR/CSPBBR3的CO生产率比原始CSPBBR3高7.25倍。热化学和光化学过程的相互促进可显着提高能量利用效率和反应动力学，从而导致高光热催化效率。这项工作表明，无机卤化物钙钛矿表现出极好的光热催化活性，并提供了扩展钙钛矿材料的应用范围的替代方法。
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