Facile synthesis of heterojunction BaTiO3/g-C3N4 electrocatalyst for hydrogen evolution reaction under acidic condition

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-06-06 DOI:10.1016/j.jtice.2025.106214

Leena Baskar , Divyadharshini Satheesh , Yuvashree Jayavelu , Karthik Krishnan , Rathika Rajendran , Rekha Pachaiappan , Vijayarangamuthu Kalimuthu , M Karunakaran , Rudra Banerjee , Paul Joseph Daniel , Kovendhan Manavalan

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引用次数: 0

Abstract

Background

Hydrogen evolution reaction (HER) is an electrochemical process for achieving sustainable energy by environment friendly process. To enhance the HER activity, perovskite BaTiO₃ oxides are explored as electrocatalysts for hydrogen evolution reaction in acidic solutions. The g-C₃N₄ is a cost-effective, stable, and property tunable catalyst with electrocatalytic properties suitable for HER. This study intends to utilize the advantages of both these by forming the BaTiO₃/g-C₃N₄ composite, to enhance the electrocatalytic properties.

Method

The g-C₃N₄ and BaTiO₃ were blended successfully through an annealing process. Various characterization methods, like XRD, SEM, TEM, FTIR, UV, and Raman, confirms the formation of BaTiO₃/g-C₃N₄ composite. Electrochemical analysis for hydrogen evolution reaction (HER) demonstrated enhanced properties for the BaTiO₃/g-C₃N₄ composite with different weight percentages.

Significant findings

BaTiO₃ with 1 wt % g-C₃N₄ composite exhibit low overpotential value of 254 mV and Tafel slope with 205 mV/dec. The same sample exhibits enhanced performance in HER activity proving it to be worth investigating more on these 2D incorporated perovskite materials for electrochemical hydrogen evolution reaction. The observed enhanced electrocatalytic performance of the BaTiO₃/g-C₃N₄ composite is attributed to the synergistic effects of BaTiO₃ and g-C₃N₄ creating a new pathway for the development of inexpensive and efficient electrocatalysts.

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酸性条件下易合成异质结BaTiO3/g-C3N4析氢电催化剂

析氢反应（HER）是一种通过环境友好的过程实现可持续能源的电化学过程。为了提高HER活性，研究了钙钛矿BaTiO3氧化物在酸性溶液中作为析氢反应的电催化剂。g-C3N4是一种经济、稳定、性能可调的催化剂，具有适合HER的电催化性能。本研究拟利用两者的优点，制备BaTiO3/g-C3N4复合材料，以提高其电催化性能。方法通过退火工艺将g-C3N4和BaTiO3成功混合。XRD、SEM、TEM、FTIR、UV、Raman等表征方法证实了BaTiO3/g-C3N4复合材料的形成。电化学析氢反应（HER）分析表明，不同重量百分比的BaTiO3/g-C3N4复合材料的析氢性能有所增强。结果表明，含1 wt % g-C3N4的sbatio3过电位值较低，为254 mV， Tafel斜率为205 mV/dec。同样的样品在HER活性方面表现出增强的性能，证明了这些二维钙钛矿材料在电化学析氢反应中的应用值得进一步研究。BaTiO3/g-C3N4复合材料电催化性能的增强是由于BaTiO3和g-C3N4的协同作用，为开发廉价高效的电催化剂开辟了新的途径。

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

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.