La2Sn2O7 enhanced photocatalytic CO2 reduction with H2O by deposition of Au co-catalyst

Shuang Chen; Bao Pan; Longquan Zeng; Shijian Luo; Xuxu Wang; Wenyue Su

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La₂Sn₂O₇ enhanced photocatalytic CO₂ reduction with H₂O by deposition of Au co-catalyst

机译：La _{2 Sn _{2 O _{7 用H _{2 O增强的光催化CO _{2 还原通过沉积金助催化剂}}}}}

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La₂Sn₂O₇ (LSO) microanospheres, synthesized by a hydrothermal method, exhibited photocatalytic performance for CO₂ reduction. The evolution rate of the main reduction products (CH₄ and CO) was 0.20 and 0.10 μmol h?1, respectively. Loading of Au co-catalyst over La₂Sn₂O₇ efficiently enhanced the photocatalytic activity of CO₂ reduction. The highest photocatalytic efficiency was obtained over 1 wt% Au/La₂Sn₂O₇ with an apparent quantum yield (AQY) of 2.54%. Characterization techniques including SEM, TEM, XRD, XPS, DRS, PL, and electrochemical analysis were applied and the physicochemical properties of La₂Sn₂O₇ and Au/La₂Sn₂O₇ samples are discussed. A possible mechanism of photocatalytic CO₂ reduction over Au/La₂Sn₂O₇ is proposed.

机译：La _{2 Sn _{2 O _{7 （LSO ）通过水热法合成的微/纳米球表现出对CO _{2 还原的光催化性能。主要还原产物（CH _{4 和CO）的释放速率分别为0.20和0.10μmolh ？1 ，分别。 La _{2 Sn _{2 O _{7 上Au助催化剂的负载> 有效增强了CO _{2 还原反应的光催化活性。在1 wt％Au / La _{2 Sn _{2 O _{1 wt％处获得最高的光催化效率> 7 ，其表观量子产率（AQY）为2.54％。应用表征技术，包括SEM，TEM，XRD，XPS，DRS，PL和电化学分析，La _{2 Sn _{2 O _{7 和Au / La _{2 Sn _{2讨论了 O _{7 样本。 Au / La _{2 Sn _{2 <的光催化还原CO _{2 的可能机理提出了/ sub> O _{7 。}}}}}}}}}}}}}}}}}}}}}}

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《RSC Advances》 |2017年第23期|共6页
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Shuang Chen; Bao Pan; Longquan Zeng; Shijian Luo; Xuxu Wang; Wenyue Su;
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1. La₂Sn₂O₇ enhanced photocatalytic CO₂ reduction with H₂O by deposition of Au co-catalyst [J] . Shuang Chen, Bao Pan, Longquan Zeng, RSC Advances . 2017,第23期

机译：La _{2 Sn _{2 O _{7 用H _{2 O增强的光催化CO _{2 还原通过沉积金助催化剂}}}}}
2. Enhanced photocatalytic CO2 reduction to CH4 over separated dual co-catalysts Au and RuO2 [J] . Dong Chunyang, Hu Songchang, Xing Mingyang, Nanotechnology . 2018,第15期

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La2Sn2O7 enhanced photocatalytic CO2 reduction with H2O by deposition of Au co-catalyst

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La₂Sn₂O₇ enhanced photocatalytic CO₂ reduction with H₂O by deposition of Au co-catalyst