Improving Photocatalytic Activities of LaFeO3 Photocathode by Chromium-Incorporated Nanoparticle

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Electronic Materials Letters Pub Date : 2024-06-16 DOI:10.1007/s13391-024-00504-0

Amin Aadenan, Nurul Affiqah Arzaee, Mohamad Firdaus Mohamad Noh, Mohd Norizam Md Daud, Danial Hakim Badrul Hisham, Muhammad Athir Mohamed Anuar, Muslizainun Mustapha, Nurul Aida Mohamed, Mohd Hafiz Ahmad, Mohd Adib Ibrahim, Norasikin Ahmad Ludin, Mohd Asri Mat Teridi

{"title":"Improving Photocatalytic Activities of LaFeO3 Photocathode by Chromium-Incorporated Nanoparticle","authors":"Amin Aadenan, Nurul Affiqah Arzaee, Mohamad Firdaus Mohamad Noh, Mohd Norizam Md Daud, Danial Hakim Badrul Hisham, Muhammad Athir Mohamed Anuar, Muslizainun Mustapha, Nurul Aida Mohamed, Mohd Hafiz Ahmad, Mohd Adib Ibrahim, Norasikin Ahmad Ludin, Mohd Asri Mat Teridi","doi":"10.1007/s13391-024-00504-0","DOIUrl":null,"url":null,"abstract":"<div><p>Incorporation of chromium (Cr) nanoparticle onto LaFeO<sub>3</sub> (LFO) photocathode to improve optical and photocatalytic activities have been successfully demonstrated. The plain LFO photocathode was prepared by spin-spray gun deposition, following the Cr-incorporated nanoparticle onto the photocathode by spin coating method. It is observed that the photocathode with the optimal composition of 1.5 mmol Cr nanoparticle enhanced the crystal growth of orthorhombic crystal structure predominantly on (121) orientation with the formation of well-connected crystal grain architecture. The structure demonstrated strong optical absorption and a high current density of -60.52 µA cm<sup>− 2</sup> at -0.5 V (vs. Ag/AgCl) more than twice to the untreated LFO film which recorded a maximum photocurrent of -21.83 µA cm<sup>− 2</sup> at -0.5 V (vs. Ag/AgCl). This subsequently led to suppressed surface recombination, lower charge resistance and good stability in the strong alkaline electrolyte. The enhancement provided that incorporating a transition metal element with plain LFO would be applicable for producing efficient photosensitive devices, particularly for photoelectrochemical (PEC) water splitting applications.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":536,"journal":{"name":"Electronic Materials Letters","volume":"20 6","pages":"775 - 790"},"PeriodicalIF":2.1000,"publicationDate":"2024-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronic Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s13391-024-00504-0","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Incorporation of chromium (Cr) nanoparticle onto LaFeO₃ (LFO) photocathode to improve optical and photocatalytic activities have been successfully demonstrated. The plain LFO photocathode was prepared by spin-spray gun deposition, following the Cr-incorporated nanoparticle onto the photocathode by spin coating method. It is observed that the photocathode with the optimal composition of 1.5 mmol Cr nanoparticle enhanced the crystal growth of orthorhombic crystal structure predominantly on (121) orientation with the formation of well-connected crystal grain architecture. The structure demonstrated strong optical absorption and a high current density of -60.52 µA cm^− 2 at -0.5 V (vs. Ag/AgCl) more than twice to the untreated LFO film which recorded a maximum photocurrent of -21.83 µA cm^− 2 at -0.5 V (vs. Ag/AgCl). This subsequently led to suppressed surface recombination, lower charge resistance and good stability in the strong alkaline electrolyte. The enhancement provided that incorporating a transition metal element with plain LFO would be applicable for producing efficient photosensitive devices, particularly for photoelectrochemical (PEC) water splitting applications.

Graphical Abstract

Abstract Image

查看原文本刊更多论文

通过加入铬纳米粒子提高 LaFeO3 阴极的光催化活性

在 LaFeO3（LFO）光电阴极上掺入铬（Cr）纳米粒子以提高光学和光催化活性的研究获得成功。普通的 LFO 光电阴极是通过自旋喷枪沉积法制备的，而铬纳米粒子则是通过自旋涂覆法添加到光电阴极上的。结果表明，最佳成分为 1.5 mmol Cr 纳米粒子的光电阴极增强了以 (121) 取向为主的正方晶体结构的晶体生长，并形成了连接良好的晶粒结构。这种结构具有很强的光吸收能力，在 -0.5 V 电压下的电流密度高达 -60.52 µA cm- 2（相对于 Ag/AgCl），是未经处理的 LFO 薄膜的两倍多，后者在 -0.5 V 电压下的最大光电流为 -21.83 µA cm- 2（相对于 Ag/AgCl）。这就抑制了表面重组，降低了电荷电阻，并在强碱性电解液中具有良好的稳定性。这一改进表明，将过渡金属元素与普通 LFO 结合在一起可用于生产高效光敏器件，特别是光电化学（PEC）水分离应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Electronic Materials Letters 工程技术-材料科学：综合

CiteScore

4.70

自引率

20.80%

发文量

审稿时长

2.3 months

期刊介绍： Electronic Materials Letters is an official journal of the Korean Institute of Metals and Materials. It is a peer-reviewed international journal publishing print and online version. It covers all disciplines of research and technology in electronic materials. Emphasis is placed on science, engineering and applications of advanced materials, including electronic, magnetic, optical, organic, electrochemical, mechanical, and nanoscale materials. The aspects of synthesis and processing include thin films, nanostructures, self assembly, and bulk, all related to thermodynamics, kinetics and/or modeling.