• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索

author:

Yiu, Sze-Chun (Yiu, Sze-Chun.) [1] | Ho, Po-Yu (Ho, Po-Yu.) [2] | Kwok, Yan-Yi (Kwok, Yan-Yi.) [3] | He, Xiaojie (He, Xiaojie.) [4] | Wang, Yi (Wang, Yi.) [5] | Yu, Wai-Hong (Yu, Wai-Hong.) [6] | Ho, Cheuk-Lam (Ho, Cheuk-Lam.) [7] | Huang, Shuping (Huang, Shuping.) [8] (Scholars:黄淑萍)

Indexed by:

EI SCIE

Abstract:

Weak light absorption of common Ir(III) complexes (e. g., using phenylpyridine as the ligand) has hindered their applications in photocatalytic hydrogen generation from water as an efficient photosensitizer. To address this issue, a series of cyclometalated Ir(III) complexes (Ir1-Ir5), featuring different electron-donating substituents to enhance the absorptivity, have been synthesized and studied as photosensitizers (PSs) for light-driven hydrogen production from water. Ir6-Ir7 were prepared as fundamental systems for comparisons. Electron donors, including 9-phenylcarbazole, triphenylamine, 4,4 '-dimethoxytriphenylamine, 4,4 '-di(N-hexylcarbazole)triphenylamine moieties were introduced on 6-(thiophen-2-yl)phenanthridine-based cyclometalating (C<^>N) ligands to explore the donor effect on the hydrogen evolution performance of these cationic Ir(III) complexes. Remarkably, Ir4 with 4,4 '-dimethoxytriphenylamine achieved the highest turn-over number (TON) of 12 300 and initial turnover frequency (TOFi) of 394 h(-1), with initial activity (activity(i)) of 547 000 mu mol g(-1) h(-1) and initial apparent quantum yield (AQY(i)) of 9.59 %, under the illumination of blue light-emitting diodes (LEDs) for 105 hours, which demonstrated a stable three-component photocatalytic system with high efficiency. The TON (based on n(H-2)/n(PSr)) in this study is the highest value reported to date among the similar photocatalytic systems using Ir(III) complexes with Pt nanoparticles as catalyst. The great potential of using triphenylamine-based Ir(III) PSs in boosting photocatalytic performance has also been shown.

Keyword:

hydrogen generation iridium photocatalysis photosensitizers water splitting

Community:

  • [ 1 ] [Yiu, Sze-Chun]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 2 ] [Ho, Po-Yu]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 3 ] [Kwok, Yan-Yi]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 4 ] [Ho, Cheuk-Lam]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 5 ] [Yiu, Sze-Chun]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 6 ] [Ho, Po-Yu]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 7 ] [Kwok, Yan-Yi]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 8 ] [Ho, Cheuk-Lam]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 9 ] [Yiu, Sze-Chun]Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Waterloo Rd, Hong Kong, Peoples R China
  • [ 10 ] [Ho, Po-Yu]Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Waterloo Rd, Hong Kong, Peoples R China
  • [ 11 ] [Wang, Yi]Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Waterloo Rd, Hong Kong, Peoples R China
  • [ 12 ] [Yu, Wai-Hong]Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Waterloo Rd, Hong Kong, Peoples R China
  • [ 13 ] [Ho, Cheuk-Lam]Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Waterloo Rd, Hong Kong, Peoples R China
  • [ 14 ] [He, Xiaojie]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 15 ] [Huang, Shuping]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 16 ] [Ho, Po-Yu]Francis Crick Inst, Biol Inorgan Chem Lab, 1 Midland Rd, London NW1 1AT, England
  • [ 17 ] [Ho, Po-Yu]Kings Coll London, Dept Chem, Britannia House,7 Trinity St, London SE1 1DB, England

Reprint 's Address:

  • 黄淑萍

    [Ho, Cheuk-Lam]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China;;[Ho, Cheuk-Lam]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China;;[Ho, Cheuk-Lam]Hong Kong Baptist Univ, Dept Chem, Kowloon Tong, Waterloo Rd, Hong Kong, Peoples R China;;[Huang, Shuping]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China

Show more details

Related Keywords:

Source :

CHEMISTRY-A EUROPEAN JOURNAL

ISSN: 0947-6539

Year: 2022

Issue: 19

Volume: 28

4 . 3

JCR@2022

3 . 9 0 0

JCR@2023

ESI Discipline: CHEMISTRY;

ESI HC Threshold:74

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count: 22

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 1 Unfold All

  • 2022-9

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

Online/Total:124/10010034
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1