To boost photocatalytic activity in selective oxidation of alcohols on ultrathin Bi2MoO6 nanoplates with Pt nanoparticles as cocatalyst
To boost photocatalytic activity in selective oxidation of alcohols on ultrathin Bi2MoO6 nanoplates with Pt nanoparticles as cocatalyst
复制标题
以 Pt 纳米粒子作为助催化剂，提高超薄 Bi2MoO6 纳米片上醇选择性氧化的光催化活性
DOI：
10.1016/j.jcat.2016.11.023
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发表时间：
2017
影响因子：
7.3
通讯作者：
Li Can
中科院分区：
文献类型：
--
作者：
Zhang Bao;Li Jun;Gao Yuying;Chong Ruifeng;Wang Zhiliang;Guo Lin;Zhang Xianwen;Li Can
光催化氧化反应为绿色合成精细化学品提供了一种很有前途的策略。然而，低的光催化效率和选择性是主要的障碍。在此，我们报道了厚度为∼17 nm的超薄Bi2MoO6纳米板在可见光照射下以O2为氧化剂将乙醇氧化为相应醛的性能，与传统水热法合成的Bi2MoO6(厚度为∼250 nm)相比，活性提高了29倍。将铂纳米粒子作为助催化剂负载到超薄的Bi2MoO6纳米板表面，光催化性能进一步提高。活性的显著提高归因于Bi2MoO6纳米板超薄的2D几何结构，提高了电荷分离效率，并提供了丰富的催化活性中心。苯甲醇和苯甲醛在超薄Bi2MoO6上具有良好的光催化氧化选择性是由于苯甲醇和苯甲醛具有不同的吸附行为。本研究还可以为通过合理制备二维有机合成半导体材料来提高光催化性能提供一种有效的策略。
Photocatalytic oxidation reactions provide a promising strategy for green synthesis of fine chemicals. However, the low photocatalytic efficiency and selectivity are the main obstacles. Herein, we report the ultrathin Bi2MoO6nanoplates with thickness of ∼17 nm which exhibit a superior performance in alcohol oxidation to corresponding aldehyde using O2under visible light irradiation, achievingca.29 times enhancement of activity compared with Bi2MoO6synthesized from traditional hydrothermal method (thickness of ∼250 nm). When Pt nanoparticles as cocatalyst are loaded on the surface of the ultrathin Bi2MoO6nanoplates, the photocatalytic performance is further enhanced. The remarkable enhancement of activity is attributed to the ultrathin 2D geometry of Bi2MoO6nanoplates, promoting the charge-separation efficiency and affording abundant catalytically active sites. The excellent selectivity of photocatalytic oxidation of benzyl alcohol on the ultrathin Bi2MoO6is attributed to the different adsorption behaviors of benzyl alcohol and benzaldehyde. This study could also provide an efficient strategy for improving the photocatalytic performance by rational fabrication of two-dimensional semiconductor materials for organic synthesis.
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影响因子：
62.1
作者：
S. Nanayakkara;J. van de Lagemaat;J. Luther
通讯作者：
S. Nanayakkara;J. van de Lagemaat;J. Luther
可见光照射下In2S3微球催化剂选择性氧化芳香醇生成相应芳香醛
影响因子：
15.1
作者：
Mengli Xie;Xia Dai;Sugang Meng;Xianliang Fu;Shifu Chen
通讯作者：
Shifu Chen
影响因子：
4.9
作者：
Palmisano, Giovanni;Garcia-Lopez, Elisa;Palmisano, Leonardo
通讯作者：
Palmisano, Leonardo
DOI：
10.1002/chin.200249236
发表时间：
2002-12
期刊：
ChemInform
影响因子：
--
作者：
R. Sheldon;I. Arends;G. T. Brink;A. Dijksman
通讯作者：
R. Sheldon;I. Arends;G. T. Brink;A. Dijksman
BiVO4晶相对光生载流子行为和光催化活性的影响
影响因子：
3.7
作者：
Fan, Haimei;Jiang, Tengfei;Xie, Tengfeng
通讯作者：
Xie, Tengfeng