Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Carbonized Polymer Dots/Bi/β-Bi2O3 for Efficient Photosynthesis of H2O2 via Redox Dual Pathways
Langmuir ( IF 3.7 ) Pub Date : 2023-12-01 , DOI: 10.1021/acs.langmuir.3c02835
Yuan Guan 1 , Qiankun Deng 1 , Jie Wang 2 , Shaomang Wang 2 , Zhongyu Li 1 , Huan He 3 , Shicheng Yan 4 , Zhigang Zou 4
Langmuir ( IF 3.7 ) Pub Date : 2023-12-01 , DOI: 10.1021/acs.langmuir.3c02835
Yuan Guan 1 , Qiankun Deng 1 , Jie Wang 2 , Shaomang Wang 2 , Zhongyu Li 1 , Huan He 3 , Shicheng Yan 4 , Zhigang Zou 4
Affiliation
|
A novel heterojunction photocatalyst of carbonized polymer dots (CPDs)/Bi/β-Bi2O3 is successfully synthesized via a one-pot solvothermal method by adjusting the reaction temperature and time. As a solvent and carbon source, ethylene glycol not only supports the conversion of Bi3+ to β-Bi2O3 but also undergoes its polymerization, cross-linking, and carbonization to produce CPDs. In addition, partial Bi3+ is reduced to Bi by ethylene glycol. As a result, the CPDs and Bi are deposited in situ on the surface of β-Bi2O3 microspheres. There are four built-in electric fields in the CPDs/Bi/β-Bi2O3 system, namely, the n-type semiconductor β-Bi2O3/H2O interface, the p-type CPDs/H2O interface, the ohmic contact between Bi and β-Bi2O3, and the Schottky junction between Bi and CPDs. Under the action of four built-in electric fields, the Z-type charge separation mechanism is formed. It promotes the effective separation of the photogenerated electron–hole and greatly improves the yield of H2O2. Under irradiation for 2 h, the H2O2 production is 1590 μmol g–1 h–1. The solar energy to H2O2 conversion efficiency is 0.11%.
中文翻译：
碳化聚合物点/Bi/β-Bi2O3 通过氧化还原双途径实现 H2O2 的高效光合作用
通过调节反应温度和时间，通过一锅溶剂热法成功合成了碳化聚合物点（CPD）/Bi/β-Bi 2 O 3新型异质结光催化剂。作为溶剂和碳源，乙二醇不仅支持Bi 3+向β-Bi 2 O 3的转化，而且还进行聚合、交联和碳化以生产CPD。另外，部分Bi 3+被乙二醇还原成Bi。结果，CPD和Bi原位沉积在β-Bi 2 O 3微球的表面上。 CPDs/Bi/β-Bi 2 O 3体系中有四个内置电场，即n型半导体β-Bi 2 O 3 /H 2 O界面、p型CPDs/H 2 O界面。界面、Bi 和 β-Bi 2 O 3之间的欧姆接触以及 Bi 和 CPD 之间的肖特基结。在四个内置电场的作用下，形成Z型电荷分离机制。它促进了光生电子-空穴的有效分离，大大提高了H 2 O 2的产率。照射2小时，H 2 O 2产量为1590 μmol g –1 h –1 。太阳能到H 2 O 2的转换效率为0.11%。
更新日期：2023-12-01
中文翻译：
碳化聚合物点/Bi/β-Bi2O3 通过氧化还原双途径实现 H2O2 的高效光合作用
通过调节反应温度和时间，通过一锅溶剂热法成功合成了碳化聚合物点（CPD）/Bi/β-Bi 2 O 3新型异质结光催化剂。作为溶剂和碳源，乙二醇不仅支持Bi 3+向β-Bi 2 O 3的转化，而且还进行聚合、交联和碳化以生产CPD。另外，部分Bi 3+被乙二醇还原成Bi。结果，CPD和Bi原位沉积在β-Bi 2 O 3微球的表面上。 CPDs/Bi/β-Bi 2 O 3体系中有四个内置电场，即n型半导体β-Bi 2 O 3 /H 2 O界面、p型CPDs/H 2 O界面。界面、Bi 和 β-Bi 2 O 3之间的欧姆接触以及 Bi 和 CPD 之间的肖特基结。在四个内置电场的作用下，形成Z型电荷分离机制。它促进了光生电子-空穴的有效分离，大大提高了H 2 O 2的产率。照射2小时，H 2 O 2产量为1590 μmol g –1 h –1 。太阳能到H 2 O 2的转换效率为0.11%。
京公网安备 11010802027423号