Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
A van der Waals Heterostructure Based on Graphene-like Gallium Nitride and Boron Selenide: A High-Efficiency Photocatalyst for Water Splitting.
ACS Omega ( IF 3.7 ) Pub Date : 2019-12-13 , DOI: 10.1021/acsomega.9b02143 Kai Ren 1 , Yi Luo 1 , Sake Wang 2 , Jyh-Pin Chou 3 , Jin Yu 1 , Wencheng Tang 1 , Minglei Sun 1
ACS Omega ( IF 3.7 ) Pub Date : 2019-12-13 , DOI: 10.1021/acsomega.9b02143 Kai Ren 1 , Yi Luo 1 , Sake Wang 2 , Jyh-Pin Chou 3 , Jin Yu 1 , Wencheng Tang 1 , Minglei Sun 1
Affiliation
|
Hydrogen generation by photocatalytic water splitting has attained more and more research interests in the recent years since the solar energy can be directly transferred and stored as hydrogen. However, the search for a high-efficiency photocatalyst for water splitting is a really challenge. In this paper, we designed a novel 2D material-based van der Waals heterostructure (vdWH) composed by g-GaN and BSe, which is thermally stable at room temperature. The g-GaN/BSe vdWH has suitable band-edge positions for the oxidation and reduction reactions of water splitting at pH 0 and 7. The carrier mobility of this heterostructure is high, indicating the effective occurrence of reactions for water splitting. The g-GaN/BSe vdWH also possesses a type-II band alignment, which can promote the separation of the photogenerated electron-hole pairs constantly. Moreover, a large built-in electric field can be established at the interface, which will further prevent the recombination of photogenerated charges. In addition, the g-GaN/BSe vdWH also exhibits outstanding sunlight-absorption ability, and the biaxial strain can further enhance this ability. Thus, we conclude that the g-GaN/BSe vdWH can act as a high-efficiency photocatalyst for water splitting.
中文翻译：
基于类石墨烯氮化镓和硒化硼的范德华异质结构：一种用于水分解的高效光催化剂。
由于太阳能可以直接以氢的形式传输和储存，近年来光催化水分解制氢引起了越来越多的研究兴趣。然而，寻找高效光催化剂用于水分解确实是一个挑战。在本文中，我们设计了一种由g-GaN和BSe组成的新型基于二维材料的范德华异质结构（vdWH），它在室温下具有热稳定性。g-GaN/BSe vdWH在pH 0和7下具有适合分解水氧化和还原反应的带边位置。该异质结构的载流子迁移率很高，表明分解水反应有效发生。g-GaN/BSe vdWH还具有II型能带排列，可以不断促进光生电子-空穴对的分离。此外，可以在界面处建立一个大的内置电场，这将进一步阻止光生电荷的复合。此外，g-GaN/BSe vdWH还表现出出色的太阳光吸收能力，双轴应变可以进一步增强这种能力。因此，我们得出结论，g-GaN/BSe vdWH 可以作为高效光催化剂用于水分解。
更新日期：2019-12-25
中文翻译：
基于类石墨烯氮化镓和硒化硼的范德华异质结构：一种用于水分解的高效光催化剂。
由于太阳能可以直接以氢的形式传输和储存，近年来光催化水分解制氢引起了越来越多的研究兴趣。然而，寻找高效光催化剂用于水分解确实是一个挑战。在本文中，我们设计了一种由g-GaN和BSe组成的新型基于二维材料的范德华异质结构（vdWH），它在室温下具有热稳定性。g-GaN/BSe vdWH在pH 0和7下具有适合分解水氧化和还原反应的带边位置。该异质结构的载流子迁移率很高，表明分解水反应有效发生。g-GaN/BSe vdWH还具有II型能带排列，可以不断促进光生电子-空穴对的分离。此外，可以在界面处建立一个大的内置电场，这将进一步阻止光生电荷的复合。此外，g-GaN/BSe vdWH还表现出出色的太阳光吸收能力，双轴应变可以进一步增强这种能力。因此，我们得出结论，g-GaN/BSe vdWH 可以作为高效光催化剂用于水分解。
京公网安备 11010802027423号