CAJ | 학술논문

采用水热反应法制备了结构新颖的高效WO3/W光阳极并研究了其光电催化性能.首先将预处理的钨片煅烧使其表面产生三氧化钨层以提供水热反应晶体生长所需的晶种,然后使用聚乙二醇作为导向剂控制晶体在其表面的生长方向,最后将水热反应的产物进行高温煅烧使其结晶化.研究结果表明,这一制备方法可以在钨表面生成高度有序的纳米条结构,在1.5V时的光电流能够达到1.8mA/cm2.
채용수열반응법제비료결구신영적고효WO3/W광양겁병연구료기광전최화성능.수선장예처리적오편단소사기표면산생삼양화오층이제공수열반응정체생장소수적정충,연후사용취을이순작위도향제공제정체재기표면적생장방향,최후장수열반응적산물진행고온단소사기결정화.연구결과표명,저일제비방법가이재오표면생성고도유서적납미조결구,재1.5V시적광전류능구체도1.8mA/cm2.
A novel WO3/W photoanode has been synthesized through a facile hydrothermal process and its photoelectrochemical properties have also been investigated. The tungsten sheet was pre-annealed to produce a thin-layer WO3 on surface to serve as seeded sites for crystal growth in hydrothermal reaction, which also provided a strong connection between the growing WO3 and substrate. Then the polyethylene glycol (PEG) was used as the structure-directing agent to confine the crystal growth. Highly aligned nanostrip structure canbeformedbythispreparationroute.The photocurrentdensityat1.5Vcanreach1.8mA/cm2.