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Bifunctional black phosphorus: coupling with hematite for Z-scheme photocatalytic overall water splitting
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-11-13 , DOI: 10.1039/d0cy01743d Ming Wang 1, 2, 3, 4 , Di Li 2, 3, 4, 5 , Yong Zhao 1, 2, 3, 4 , Hao Shen 1, 2, 3, 4 , Biyi Chen 1, 2, 3, 4 , Xiaojie Wu 1, 2, 3, 4 , Xiaolei Qiao 1, 2, 3, 4 , Weidong Shi 1, 2, 3, 4
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-11-13 , DOI: 10.1039/d0cy01743d Ming Wang 1, 2, 3, 4 , Di Li 2, 3, 4, 5 , Yong Zhao 1, 2, 3, 4 , Hao Shen 1, 2, 3, 4 , Biyi Chen 1, 2, 3, 4 , Xiaojie Wu 1, 2, 3, 4 , Xiaolei Qiao 1, 2, 3, 4 , Weidong Shi 1, 2, 3, 4
Affiliation
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Z-Scheme photocatalytic overall water splitting based on an oxygen production photocatalyst (OPP) and a hydrogen production photocatalyst (HPP) provides a promising opportunity for the conversion of solar energy into chemical energy. Herein, a novel all solid-state 2D–2D Z-scheme photocatalytic system is designed and constructed by coupling black phosphorus nanosheets (2D BP) with α-Fe2O3 nanoplates. 2D BP is used as an HPP and solid-state charge transfer mediator to produce H2 and accelerate charge transfer, while α-Fe2O3 serves as an OPP. The introduction of 2D BP as solid-state charge transfer mediator promotes the carrier transfer, thus simultaneously realizing efficient H2 and O2 evolution. The optimum O2 and H2 evolution rates on this Z-scheme system are approximately 0.29 and 0.59 μmol h−1, respectively, under simulated visible light illumination without using sacrificial agents. This study suggests the significance of a solid charge transfer mediator to accelerate the migration and separation of interface charges, thus improving the photocatalytic overall water splitting performance.
中文翻译：
双功能黑磷：与赤铁矿耦合用于Z方案光催化总水分解
基于制氧光催化剂（OPP）和制氢光催化剂（HPP）的Z-Scheme光催化总水分解工艺为太阳能转化为化学能提供了广阔的机遇。在此，一种新型的全固态2D-2D Z-方案的光催化系统的设计，并通过与的α-Fe耦合黑磷纳米片（2D BP）构建2 ö 3纳米片。2D BP用作HPP和固态电荷转移介质生成H 2和加速的电荷转移，而的α-Fe 2 ö 3用作OPP。引入2D BP作为固态电荷转移介体可促进载流子转移，从而同时实现有效的H 2和O 2的演化。在不使用牺牲剂的模拟可见光照射下，该Z方案系统的最佳O 2和H 2析出速率分别约为0.29和0.59μmolh -1。这项研究表明，固体电荷转移介体对于加速界面电荷的迁移和分离，从而改善光催化整体水分解性能的重要性。
更新日期：2020-11-27
中文翻译：
双功能黑磷：与赤铁矿耦合用于Z方案光催化总水分解
基于制氧光催化剂（OPP）和制氢光催化剂（HPP）的Z-Scheme光催化总水分解工艺为太阳能转化为化学能提供了广阔的机遇。在此，一种新型的全固态2D-2D Z-方案的光催化系统的设计，并通过与的α-Fe耦合黑磷纳米片（2D BP）构建2 ö 3纳米片。2D BP用作HPP和固态电荷转移介质生成H 2和加速的电荷转移，而的α-Fe 2 ö 3用作OPP。引入2D BP作为固态电荷转移介体可促进载流子转移，从而同时实现有效的H 2和O 2的演化。在不使用牺牲剂的模拟可见光照射下，该Z方案系统的最佳O 2和H 2析出速率分别约为0.29和0.59μmolh -1。这项研究表明，固体电荷转移介体对于加速界面电荷的迁移和分离，从而改善光催化整体水分解性能的重要性。
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