Enhanced Charge Separation and Transfer of Fe2O3@Nitrogen‐Rich Carbon Nitride Tubes for Photocatalytic Water Splitting,Energy Technology

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Enhanced Charge Separation and Transfer of Fe2O3@Nitrogen‐Rich Carbon Nitride Tubes for Photocatalytic Water Splitting
Energy Technology ( IF 3.6 ) Pub Date : 2020-04-24 , DOI: 10.1002/ente.202000108
Chen Zhao ₁ , Mang Zheng ₁ , Dan Wang ₁ , Qi Li ₁ , Baojiang Jiang ₁

Affiliation

Carbon nitride is widely used in photocatalytic hydrogen production, but it is still difficult to split water without any sacrificial reagent. Herein, nanosized Fe₂O₃ is combined with 3D nitrogen‐rich carbon nitride tubes (ACN), to form an Fe₂O₃@ACN Z‐scheme heterojunction, which accelerates the electrons’ transfer from Fe₂O₃ to ACN and improves the charge separation efficiency. Meanwhile, the bandgap of Fe₂O₃@ACN is about 2.01 eV, beneficial to the enhancement of visible light absorption capacity. As a result, without any sacrificial agent, the hydrogen evolution rate reaches 3.7 μmol h⁻¹ (10 mg catalyst, AM1.5) through water splitting, which is three times that of ACN and 45 times that of bulk C₃N₄ (GCN). This work provides a new strategy to prompt pure water splitting based on carbon nitride catalysts.

中文翻译：

Fe2O3 @富氮氮化碳管的电荷分离和转移增强，用于光催化水分解

氮化碳被广泛用于光催化制氢，但是在没有任何牺牲试剂的情况下仍然很难分解水。在本文中，纳米尺寸的Fe ₂ ö ₃与3D富氮氮化碳管（ACN），结合以形成一种Fe ₂ ö ₃ @ACN Z-方案异质结，这加速了电子的选自Fe转印₂ ö ₃至ACN和提高电荷分离效率。同时，Fe ₂ O ₃ @ACN的带隙约为2.01eV，有利于提高可见光吸收能力。结果，在没有任何牺牲剂的情况下，氢释放速率达到3.7μmolh ^-1（10 mg催化剂，AM1.5）通过水分解，是ACN的三倍和本体C ₃ N ₄（GCN）的45倍。这项工作提供了一种基于氮化碳催化剂促进纯水分解的新策略。

更新日期：2020-07-02

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