二硒醚
化学气相沉积
半金属
二硒化钨
材料科学
薄膜
纳米技术
单层
半导体
过渡金属
原子层沉积
铂金
光电子学
带隙
催化作用
化学
冶金
生物化学
硒
作者
Jianping Shi,Yahuan Huan,Min Hong,Runzhang Xu,Pengfei Yang,Zhepeng Zhang,Xiaolong Zou,Yanfeng Zhang
出处
期刊:ACS Nano
[American Chemical Society]
日期:2019-06-24
卷期号:13 (7): 8442-8451
被引量:85
标识
DOI:10.1021/acsnano.9b04312
摘要
Among two-dimensional (2D) transition-metal dichalcogenides (TMDCs), platinum diselenide (PtSe2) stands in a distinct place due to its fancy transition from type-II Dirac semimetal to semiconductor with a thickness variation from bulk to monolayer (1 ML) and the related versatile applications especially in mid-infrared detectors. However, achieving atomically thin PtSe2 is still a challenging issue. Herein, we have designed a facile chemical vapor deposition (CVD) method to achieve the synthesis of atomically thin 1T-PtSe2 on an electrode material of Au foil. Thanks to the high crystalline quality, we have confirmed the complete transition from semimetal to semiconductor from trilayer (3 ML) to 1 ML 1T-PtSe2. More importantly, we have found that such atomically thin 1T-PtSe2 can serve as perfect electrocatalysts, featured with a record high hydrogen evolution reaction (HER) efficiency (comparable to traditional Pt catalyst). Our work is helpful toward the large-scale synthesis, exotic physical property exploration, and intriguing application development of atomically thin TMDCs.
科研通智能强力驱动
Strongly Powered by AbleSci AI