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Author:

Zou, Hanjun (Zou, Hanjun.) | Tong, Yan (Tong, Yan.) | Feng, Yajie (Feng, Yajie.) | Zhou, Yongfeng (Zhou, Yongfeng.) | Xiao, Jiaxun (Xiao, Jiaxun.) | Xia, Lu (Xia, Lu.) | Guha, Anku (Guha, Anku.) | Polesso, Barbara (Polesso, Barbara.) | Zhang, Bin (Zhang, Bin.) | Liu, Juanli (Liu, Juanli.) | Wang, Kaiwen (Wang, Kaiwen.)

Indexed by:

EI Scopus SCIE

Abstract:

Subnanocluster (SNC) cocatalysts are considered to be promising cocatalysts for photocatalytic hydrogen evolution reaction (HER) due to their rich surface-active sites and high atom utilization efficiency. Herein, a reductant-mediated in situ growth of the atomic clusters procedure is developed to synthesize SNC-Cu serving as advanced cocatalysts on TiO2 nanoparticles for HER. The optimized SNC-Cu/TiO2 catalyst, with 1.8 wt % metal mass loading, exhibits a remarkable hydrogen evolution rate of 6832 mu mol g(-1) h(-1), which is ca. 25-fold that of bare TiO2 (273 mu mol g(-1) h(-1) and comparable to that of 1 wt % Pt-modified TiO2 (7754 mu mol g(-1) h(-1)). Meanwhile, decent photostability and recyclability are also certified via a 20 h durability test. Comprehensive electron microscopy and spectroscopy characterizations unveil that the outstanding performance of SNC-Cu/TiO2 can be attributed to accelerated charge separation/transfer and suppressed photoinduced electron-hole recombination. Furthermore, in situ X-ray photoelectron spectroscopy and first-principle calculations reveal that the electron-localized SNC-Cu, with its abundant surface sites, facilitates *H adsorption and desorption, thus enhancing the HER activity significantly. This work highlights the promising potential of constructing noble-metal-free SNCs in semiconductors for photocatalytic HER.

Keyword:

TiO2 photocatalytichydrogen evolution cocatalysts insitu XPS subnanocluster

Author Community:

  • [ 1 ] [Zou, Hanjun]Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
  • [ 2 ] [Xiao, Jiaxun]Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
  • [ 3 ] [Zhang, Bin]Chongqing Univ, Analyt & Testing Ctr, Chongqing 401331, Peoples R China
  • [ 4 ] [Tong, Yan]Chongqing Univ, Sch Chem & Chem Engn, Chongqing 401331, Peoples R China
  • [ 5 ] [Zhou, Yongfeng]Chongqing Univ, Sch Chem & Chem Engn, Chongqing 401331, Peoples R China
  • [ 6 ] [Liu, Juanli]Chongqing Univ, Sch Chem & Chem Engn, Chongqing 401331, Peoples R China
  • [ 7 ] [Feng, Yajie]Chongqing Univ, Coll Phys, Chongqing 401331, Peoples R China
  • [ 8 ] [Feng, Yajie]Chongqing Univ, Ctr Quantum Mat & Devices, Chongqing 401331, Peoples R China
  • [ 9 ] [Xia, Lu]Rhein Westfal TH Aachen, Fac Mech Engn, D-52062 Aachen, Germany
  • [ 10 ] [Polesso, Barbara]Pontificia Univ Catolica Rio Grande do Sul, Postgrad Program Mat Engn & Technol, BR-90619900 Porto Alegre, Brazil
  • [ 11 ] [Guha, Anku]Tata Inst Fundamental Res, Hyderabad 500046, India
  • [ 12 ] [Wang, Kaiwen]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100024, Peoples R China

Reprint Author's Address:

  • [Liu, Juanli]Chongqing Univ, Sch Chem & Chem Engn, Chongqing 401331, Peoples R China;;[Wang, Kaiwen]Beijing Univ Technol, Beijing Key Lab Microstruct & Property Adv Mat, Beijing 100024, Peoples R China;;

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Source :

ACS APPLIED NANO MATERIALS

Year: 2024

Issue: 10

Volume: 7

Page: 11680-11689

5 . 9 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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