Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, the College of Chemistry, Nanchang University, 999# Xuefu Road, Nanchang 330031, PR China.
Key Laboratory of Jiangxi Province for Environment and Energy Catalysis, the College of Chemistry, Nanchang University, 999# Xuefu Road, Nanchang 330031, PR China.
J Colloid Interface Sci. 2019 Oct 15;554:335-343. doi: 10.1016/j.jcis.2019.07.014. Epub 2019 Jul 8.
ZnO as a potential semiconductor photocatalyst is applied in photoelectrochemistry, photodegradation and photocatalytic hydrogen evolution. However, the lack of visible light absorption and unsatisfactory photocatalytic activity restrict the potential applications of ZnO. In the study, a novel in-situ electrochemical growth strategy was developed to construct α-FeO-ZnO rod/reduced graphene oxide (rGO) heterostructure for extending visible-light absorption ability and improving the photoexcited carrier transport process. The electrochemical growth strategy can also be used to design other heterostructure photocatalytic materials. The α-FeO-ZnO/rGO heterostructure can not only exhibit enhanced photoelectrochemical performance but can also effectively capture CO and reduce CO to CHOH under visible light. The interface coordination effect between ZnO and α-FeO are considerably enhanced via a heterojunction constructed at the interface region. The heterostructure might be applied in the photoelectrochemical water splitting and artificial photosynthesis. The electrochemical growth strategy can be also used to design other heterostructure photocatalytic materials.
氧化锌作为一种潜在的半导体光催化剂，应用于光电化学、光降解和光催化析氢等领域。然而，其可见光吸收能力不足和光催化活性不理想限制了氧化锌的潜在应用。在本研究中，我们开发了一种新颖的原位电化学生长策略，构建了α-FeO-ZnO 棒/还原氧化石墨烯（rGO）异质结构，以扩展可见光吸收能力并改善光激发载流子输运过程。这种电化学生长策略也可用于设计其他异质结构光催化材料。α-FeO-ZnO/rGO 异质结构不仅表现出增强的光电化学性能，而且在可见光照射下还能有效捕获 CO 并将其还原为 CHOH。通过在界面区域构建异质结，显著增强了 ZnO 和 α-FeO 之间的界面协同作用。该异质结构可能在光电化学水分解和人工光合作用中得到应用。此外，这种电化学生长策略也可用于设计其他异质结构光催化材料。
