Uniformly Sized (112) Facet Co2P on Graphene for Highly Effective Photocatalytic Hydrogen Evolution | |
Department | OSSO国家重点实验室 |
Tian B(田彬)1,2; Li Z(李振)1,2; Zhen, Wenlong3; Lu GX(吕功煊)1; Lv GX(吕功煊) | |
The second department | erc国家工程研究中心 |
2016 | |
Source Publication | Journal of Physical Chemistry C |
ISSN | 1932-7447 |
Volume | 120Issue:12Pages:6409-6415 |
Abstract | We show that photocatalytic hydrogen evolution reaction (HER) rate is highly dependent on Co surface state, indicated by binding energy data. The key process of hydrogen generation, Co2P–H species formation, follows lower hydrogen adsorption free energy (ΔGH) route. Such low surface energy species can dramatically decrease the overpotential for HER (about 35 mV for HER in basic electrolyte at pH 11, and 150 and 196 mV overpotentials at current density 5 and 15 mA/cm2, respectively). This could explain why Co2P loaded on reduced graphene oxide (RGO) reached high hydrogen generation rate, 1068 μmol·h–1, much higher than that of Pt/RGO catalyst (822 μmol·h–1) under the same reaction condition, while a high apparent quantum efficiency (AQE) (33.3%) was achieved at 520 nm. Moreover, it opens a design strategy for development of cocatalyst with enhanced efficiencies through change of surface H species formation. |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1021/acs.jpcc.6b00680 |
Funding Organization | the National Natural Science Foundation of China (Grant Nos. 21433007;21373245);the 973 Program of Department of Sciences and Technology China (Grant No. 2013CB632404) |
Indexed By | SCI |
If | 4.536 |
Language | 英语 |
Funding Project | 环境催化与清洁能源研究组;环境催化与氢能源研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/19492 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) 精细石油化工中间体国家工程研究中心(ERC) |
Corresponding Author | Lv GX(吕功煊) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China |
Recommended Citation GB/T 7714 | Tian B,Li Z,Zhen, Wenlong,et al. Uniformly Sized (112) Facet Co2P on Graphene for Highly Effective Photocatalytic Hydrogen Evolution[J]. Journal of Physical Chemistry C,2016,120(12):6409-6415. |
APA | Tian B,Li Z,Zhen, Wenlong,Lu GX,&吕功煊.(2016).Uniformly Sized (112) Facet Co2P on Graphene for Highly Effective Photocatalytic Hydrogen Evolution.Journal of Physical Chemistry C,120(12),6409-6415. |
MLA | Tian B,et al."Uniformly Sized (112) Facet Co2P on Graphene for Highly Effective Photocatalytic Hydrogen Evolution".Journal of Physical Chemistry C 120.12(2016):6409-6415. |
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