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author:

Ho, Cheuk-Lam (Ho, Cheuk-Lam.) [1] | Fan, Linyu (Fan, Linyu.) [2] | Huang, Shuwen (Huang, Shuwen.) [3] | Kwong, Wai-Hang (Kwong, Wai-Hang.) [4] | Kwok, Yan Yi (Kwok, Yan Yi.) [5] | Kwong, Tsz-Lung (Kwong, Tsz-Lung.) [6] | Huang, Shuping (Huang, Shuping.) [7] (Scholars:黄淑萍)

Indexed by:

EI Scopus SCIE

Abstract:

Two novel metal-free organic dyes, namely the mono-anchoring KMT1 and di-anchoring KMT2 dyes, have been synthesized to function as photosensitizers for utilizing in photocatalytic hydrogen production systems. They adopt the donor-donor-pi-acceptor and donor-donor-(-pi-acceptor)2 configurations, respectively, featuring triphenylamine and fluorene moieties as electron donors, thiophene as the pi-bridges and cyanoacrylic acid as the acceptors/anchoring groups. It was found that the photocatalytic performance of the di-anchoring dye significantly outperforms that of its mono-anchoring counterpart. KMT2-based photocatalytic system demonstrated remarkable performance, producing 3520 mu mol (84.9 mL) of hydrogen over a span of 257 hours under blue light irradiation, with a turnover number (TON) of 56300, a turnover frequency (TOFi) of 1862.7 h-1, an initial hydrogen production activity (activityi) of 1164180 and an apparent quantum yield (AQYi %) of 19.9. This performance is among the top-tier when compared to other dyes used in similar photocatalytic systems. The results clearly illustrate that the di-anchoring dye possesses several advantages, including a broad absorption spectrum, higher absorptivity, and a relatively slower charge recombination rate. These attributes collectively contribute to its superior overall performance in photocatalysis.

Keyword:

di-anchoring hydrogen generation photocatalysis photosensitizers water-splitting

Community:

  • [ 1 ] [Ho, Cheuk-Lam]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 2 ] [Fan, Linyu]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 3 ] [Kwong, Wai-Hang]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 4 ] [Kwok, Yan Yi]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 5 ] [Kwong, Tsz-Lung]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China
  • [ 6 ] [Ho, Cheuk-Lam]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 7 ] [Fan, Linyu]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 8 ] [Kwong, Wai-Hang]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 9 ] [Kwok, Yan Yi]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 10 ] [Kwong, Tsz-Lung]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China
  • [ 11 ] [Huang, Shuwen]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 12 ] [Huang, Shuping]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China
  • [ 13 ] [Kwong, Tsz-Lung]Unitec Inst Technol, 139 Carrington Rd, Auckland 1025, New Zealand

Reprint 's Address:

  • [Ho, Cheuk-Lam]Hong Kong Polytech Univ, Dept Appl Biol & Chem Technol, Hung Hom, Hong Kong, Peoples R China;;[Kwong, Tsz-Lung]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;;[Kwong, Tsz-Lung]PolyU Shenzhen Res Inst, Shenzhen, Peoples R China;;[Huang, Shuping]Fuzhou Univ, Coll Chem, Fuzhou 350108, Fujian, Peoples R China;;[Kwong, Tsz-Lung]Unitec Inst Technol, 139 Carrington Rd, Auckland 1025, New Zealand;;

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Source :

CHEMCATCHEM

ISSN: 1867-3880

Year: 2024

Issue: 21

Volume: 16

3 . 8 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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