Efficient Charge Transfer of p-n Heterojunction UiO-66-NH2/CuFe2O4 Composite for Photocatalytic Hydrogen Production

IF 4.3 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2024-05-24 DOI:10.3390/catal14060341

M. Shanmugam, Nithish Agamendran, Karthikeyan Sekar

引用次数: 0

Abstract

Using a p-n heterojunction is one of the efficient methods to increase charge transfer in photocatalysis applications. So, herein, p-type UiO-66 (NH2) and n-type CuFe2O4 (CFO) are used to form an effective p-n heterojunction. Due to their poor charge separation in their pristine form, both UiO-66 (NH2) and CFO materials cannot produce hydrogen; however, the composite p-n heterojunction formed between these materials makes fast charge separation and so hydrogen is efficiently produced. The optimized catalyst UCFO 25% produces a maximum of 62.5 µmol/g/h hydrogen in an aqueous methanol solution. The formation of a p-n heterojunction is confirmed by Mott–Schottky analysis and optical properties, crystallinity and the local atomic environment of the material was analyzed by various analytical tools like UV-Vis spectroscopy, XRD, and XANES.

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用于光催化制氢的 p-n 异质结 UiO-66-NH2/CuFe2O4 复合材料的高效电荷转移

在光催化应用中，使用 p-n 异质结是增加电荷转移的有效方法之一。因此，本文使用 p 型 UiO-66 (NH2) 和 n 型 CuFe2O4 (CFO) 形成有效的 p-n 异质结。由于原始形式的 UiO-66 (NH2) 和 CFO 材料的电荷分离能力较差，因此不能产生氢气；但是，这些材料之间形成的复合 p-n 异质结可以快速分离电荷，因此可以高效地产生氢气。经过优化的催化剂 UCFO 25% 在甲醇水溶液中最多可产生 62.5 µmol/g/h 的氢气。Mott-Schottky 分析证实了 p-n 异质结的形成，紫外可见光谱、XRD 和 XANES 等各种分析工具分析了材料的光学特性、结晶度和局部原子环境。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico