高等学校化学学报2026，Vol.47Issue(6)：125-135,11.DOI:10.7503/cjcu20250347
Ti3C2Tx/TiO2光电极的等离激元分解水性能
Plasmonic Solar Water Splitting Performance of Ti3C2Tx/TiO2 Photoelectrode
摘要
Abstract
Developing high-performance photoelectrodes is crucial for advancing solar energy conversion.This study aims to construct an efficient Schottky junction photoanode by integrating Ti3C2Tx MXene nanosheets with rutile TiO2 nanorod arrays(NRs)to synergistically enhance charge separation and light harvesting.The Ti3C2Tx/TiO2 composite was fabricated by spin-coating Ti3C2Tx nanosheets,known for their high conductivity and localized surface plasmon resonance(LSPR),onto hydrothermally grown TiO2 NRs.Material characterization techniques,including X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM),and transmission electron microscopy(TEM),confirmed the successful preparation of Ti3C2Tx and its uniform deposition on the TiO2.Photoelectrochemical(PEC)tests revealed that the optimized composite(MT-200)achieved a significant photocur-rent density of 1.21 mA/cm2 under AM 1.5G illumination,which represents a 51.9％enhancement compared to pris-tine TiO2.This performance improvement is attributed to two primary factors.First,the intimate interface between Ti3C2Tx and TiO2 forms an effective Schottky junction,which significantly promotes the separation of photogenerated electron-hole pairs.Second,the intrinsic LSPR property of Ti3C2Tx endows the composite with plasmonic excitation capability.The associated photothermal effect locally elevates the temperature at the reaction interface,thereby further accelerating interfacial reaction kinetics and boosting charge carrier transport.This work demonstrates a promising strategy for enhanced PEC performance through the synergistic integration of Schottky junction and plasmonic effects in a Ti3C2Tx/TiO2 heterostructure.关键词
Ti3C2Tx/局域表面等离激元共振/肖特基结/光电化学分解水Key words
Ti3C2Tx/Localized surface plasmon resonance/Schottky junction/Photoelectrochemical water splitting分类
化学化工引用本文复制引用
陈梦佳,桑丽霞,李扬扬..Ti3C2Tx/TiO2光电极的等离激元分解水性能[J].高等学校化学学报,2026,47(6):125-135,11.基金项目
国家自然科学基金(批准号:52176174)资助.Supported by the National Natural Science Foundation of China(No.52176174). （批准号:52176174）
