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Controllable Growth and Defect Engineering of Vertical PtSe2 Nanosheets for Electrocatalytic Hydrogen Evolution
ACS Energy Letters ( IF 19.3 ) Pub Date : 2022-10-03 , DOI: 10.1021/acsenergylett.2c01810 Kang Chen 1, 2 , Yahuan Huan 2 , Wenzhi Quan 2 , Lijie Zhu 2 , Jiatian Fu 2 , Jingyi Hu 2 , Fangfang Cui 2 , Fan Zhou 2 , Xiangzhuo Wang 2 , Minjie Li 1 , Yanfeng Zhang 2
ACS Energy Letters ( IF 19.3 ) Pub Date : 2022-10-03 , DOI: 10.1021/acsenergylett.2c01810 Kang Chen 1, 2 , Yahuan Huan 2 , Wenzhi Quan 2 , Lijie Zhu 2 , Jiatian Fu 2 , Jingyi Hu 2 , Fangfang Cui 2 , Fan Zhou 2 , Xiangzhuo Wang 2 , Minjie Li 1 , Yanfeng Zhang 2
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Two-dimensional (2D) PtSe2 has attracted intensive attention in energy-related fields, due to its high catalytic activity, electrical conductivity, and chemical stability, etc. However, the active sites of 2D PtSe2 nanosheets synthesized on conventional planar substrates are limited to the edge sites. Herein, the direct synthesis of three-dimensional (3D) vertically oriented 1T-PtSe2 nanosheets featured with abundant edge sites is reported on the nanoporous gold template via a chemical vapor deposition route. Moreover, Ar+ sputtering treatment of as-grown sample is introduced to generate more abundant surface defects, thus boosting the electrocatalytic activity of the inert basal planes. In this regard, the vertical growth configuration and abundant defects of PtSe2 nanosheets are revealed to afford remarkable electrocatalytic activity for hydrogen evolution reaction. This work hereby provides a new route for the morphology engineering of noble metal related transition-metal dichalcogenides toward 3D vertical configurations, which should promote their practical applications in high-current-density water splitting.
中文翻译：
用于电催化析氢的垂直 PtSe2 纳米片的可控生长和缺陷工程
二维（2D）PtSe 2由于其高催化活性、导电性和化学稳定性等优点，在能源相关领域引起了广泛关注。然而，在常规平面衬底上合成的二维 PtSe 2纳米片的活性位点是仅限于边缘站点。在此，报道了通过化学气相沉积路线在纳米多孔金模板上直接合成具有丰富边缘位点的三维（3D）垂直取向的1T-PtSe 2纳米片。此外，Ar +引入对生长样品的溅射处理以产生更丰富的表面缺陷，从而提高惰性基面的电催化活性。在这方面，PtSe 2纳米片的垂直生长结构和丰富的缺陷被揭示为析氢反应提供了显着的电催化活性。这项工作为贵金属相关过渡金属二硫属化物的形态工程向3D垂直构型提供了一条新途径，这将促进其在高电流密度水分解中的实际应用。
更新日期：2022-10-03
中文翻译：
用于电催化析氢的垂直 PtSe2 纳米片的可控生长和缺陷工程
二维（2D）PtSe 2由于其高催化活性、导电性和化学稳定性等优点，在能源相关领域引起了广泛关注。然而，在常规平面衬底上合成的二维 PtSe 2纳米片的活性位点是仅限于边缘站点。在此，报道了通过化学气相沉积路线在纳米多孔金模板上直接合成具有丰富边缘位点的三维（3D）垂直取向的1T-PtSe 2纳米片。此外，Ar +引入对生长样品的溅射处理以产生更丰富的表面缺陷，从而提高惰性基面的电催化活性。在这方面，PtSe 2纳米片的垂直生长结构和丰富的缺陷被揭示为析氢反应提供了显着的电催化活性。这项工作为贵金属相关过渡金属二硫属化物的形态工程向3D垂直构型提供了一条新途径，这将促进其在高电流密度水分解中的实际应用。
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