Sacrificial Reagent Free Photocatalytic Oxygen Evolution over CeF3/α-FeOOH Nanohybrid,Advanced Materials Interfaces

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Sacrificial Reagent Free Photocatalytic Oxygen Evolution over CeF3/α-FeOOH Nanohybrid
Advanced Materials Interfaces ( IF 4.3 ) Pub Date : 2021-09-14 , DOI: 10.1002/admi.202101161
Bing Han ₁ , Yunchao Lou ₁ , Zhe Liu ₁ , Chutong Zhou ₁ , Zhiyu Wang ₁ , Guodong Qian ₁

Affiliation

Water oxidation is a crucial step in photocatalytic water splitting, but it still remains a great challenge for its complex four-electron process. Herein, uniform CeF₃/α-FeOOH nanohybrids are synthesized by one-step hydrothermal process. The obtained CeF₃/α-FeOOH nanohybrids exhibit a significantly high photocatalytic oxygen-evolution activity with sacrifice reagent free. The optimal CeF₃/α-FeOOH-400 nanohybrid reaches a remarkable rate up to 4702.5 µmol g⁻¹ h⁻¹, which is 2.6 times higher than that of CeF₃/α-FeOOH-0 nanohybrid. The recycling experiments further indicate its potential in oxygen evolution. The metal-like α-FeOOH may improve the electron transfer, act as electron collection to store the electron transferred from CeF₃, and suppress the recombination of electron–hole pairs in CeF₃ effectively. This work provides an insight into the construction of effective photocatalysts with improved charge separation for overall water splitting.

中文翻译：

CeF3/α-FeOOH纳米杂化物上的无牺牲试剂光催化析氧

水氧化是光催化分解水的关键步骤，但其复杂的四电子过程仍然是一个巨大的挑战。在此，通过一步水热法合成了均匀的CeF ₃ /α-FeOOH纳米杂化物。获得的CeF ₃ /α-FeOOH纳米杂化物在无牺牲试剂的情况下表现出显着高的光催化析氧活性。最佳的CeF ₃ /α-FeOOH-400纳米杂化物达到了惊人的速率，高达4702.5 µmol g ^-1 h ^-1，是CeF _{3 的}2.6倍/α-FeOOH-0 纳米杂化物。回收实验进一步表明其在析氧方面的潜力。金属样α-的FeOOH可以改进电子转移，充当电子集合来存储从传送的CeF电子₃，并抑制在CEF电子-空穴对的复合₃有效。这项工作为构建有效的光催化剂提供了见解，该催化剂具有改进的整体水分解电荷分离。

更新日期：2021-10-08

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