Accelerated charge transfer of Cd0.5Zn0.5S@ZnS core–shell nano-spheres via decoration of Ni2P and g-C3N4 toward efficient visible-light-driven H2 production

Ma, Xin; Ruan, Qinqin; Wu, Jiakun; Zuo, Ying; Pu, Xipeng; Lin, Haifeng; Yi, Xiujie; Li, Yanyan; Wang, Lei

doi:10.1039/d0dt00843e

Cited by 11 publications

(10 citation statements)

References 62 publications

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“…[4][5][6] PHE systems based on various kinds of semiconductors have been extensively investigated so far, [7,8] among which Pt/TiO 2 has been regarded as one of the most major photocatalysts. [9][10][11][12][13] To overcome the inherent defects of TiO 2 such as large band gap which leads to low photocatalytic efficiency, some research groups reported the development of dye-sensitized Pt/TiO 2 photocatalysts for hydrogen evolution. [14][15][16][17] A recent trend for sensitizing Pt/TiO 2 is the use of metal-free organic dyes with strong absorptivity and panchromatic sensitization properties.…”

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confidence: 99%

Semi‐Synthetic Chlorophyll‐Carotenoid Dyad for Dye‐Sensitized Photocatalytic Hydrogen Evolution

Liu

Chen

et al. 2021

Adv Materials Inter

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attractive and challenging researches in the field of artificial photosynthesis. [1][2][3] Photocatalytic hydrogen evolution (PHE) has been in the spotlight as it is a highly prospective approach to convert and store the solar energy into hydrogen energy efficiently to meet future global energy demand. Thus development of photocatalysis for PHE is considered to be a matter of central focus to solve the problem of energy shortage and environmental pollution. [4][5][6] PHE systems based on various kinds of semiconductors have been extensively investigated so far, [7,8] among which Pt/TiO 2 has been regarded as one of the most major photocatalysts. [9][10][11][12][13] To overcome the inherent defects of TiO 2 such as large band gap which leads to low photocatalytic efficiency, some research groups reported the development of dye-sensitized Pt/TiO 2 photocatalysts for hydrogen evolution. [14][15][16][17] A recent trend for sensitizing Pt/TiO 2 is the use of metal-free organic dyes with strong absorptivity and panchromatic sensitization properties. [18][19][20] For example, perylene-quinoxaline, [21] porphyrin-BODIPY, [22] phenothiazine-BODIPY, [23] thienopyrazine-triarylamine, [24] or multicarbazole [25] have been developed as covalently-linked multichromophore sensitizers for Pt/TiO 2 -based catalysts to realize efficient light absorption. In this context, we recently reported a dyad sensitizer of chlorophyll derivative connected with indoline dye for panchromatic PHE. [26] The high photocatalytic activity of dyad was attributed to not only an excellent A chlorin-carotenoid dyad Dyad-COOH possessing a C3 2 -carboxylic acid group and a carotenoid moiety at the terminal end of C17-substituent is synthesized from naturally occurring chlorophyll-a as a new sensitizer for photocatalytic hydrogen evolution (PHE). Under the same experimental conditions, a maximum turnover number (TON) of PHE based on Dyad-COOH/Pt/TiO 2 is much higher than those of Pt/TiO 2 -based photocatalysts sensitized by the corresponding chlorin carboxylic acid (Chl-COOH) without carotenoid side chain, sole carotenoic acid (Car-COOH), or their 1:1 (mol/mol) mixture. By coadsorbing different types of carboxylic acid, the TON of Chl-COOH is found to be increased probably due to the suppression of chlorin aggregates on the TiO 2 surface. The Dyad-COOH/Pt/TiO 2 exhibits excellent photocatalytic performance with the hydrogen evolution of 9147 µmol g −1 h −1 with TON of 425 when 43 µmol g −1 of dye is loaded on the Pt/TiO 2 catalyst, while a better TON of 556 is achieved by preparing the photocatalyst with 10 µmol g −1 of Dyad-COOH. This study provides new ideas for utilizing traditional photosynthetic dyes to a low-cost and highly-efficient photosensitizer for PHE.

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confidence: 99%

Semi‐Synthetic Chlorophyll‐Carotenoid Dyad for Dye‐Sensitized Photocatalytic Hydrogen Evolution

Liu

Chen

et al. 2021

Adv Materials Inter

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“…Notably, the Cd 0.5 Zn 0.5 S photocatalyst displays the lowest PL peaks which indicate that photon-generated carrier recombination of Cd 0.5 Zn 0.5 S can be more effectively inhibited, suggesting that porous Cd 0.5 Zn 0.5 S twinned phase junction nanosheets have superior hydrogen evolution activity. 44,45 Figure 7b exhibits the surface photovoltage (SPV) signal of Cd 1-x Zn x S (x = 0, 0.25, 0.5, and 0.75) photocatalysts. For semiconductors with similar components, the photovoltage intensity is positively correlated with the separation efficiency.…”

Section: Resultsmentioning

confidence: 99%

“…By contrast, Cd 1-x Zn x S solid solution exhibits much lower PL intensity, implying that the recombination of photo-induced e − /h + pairs is significantly inhibited. Notably, the Cd 0.5 Zn 0.5 S photocatalyst displays the lowest PL peaks which indicate that photon-generated carrier recombination of Cd 0.5 Zn 0.5 S can be more effectively inhibited, suggesting that porous Cd 0.5 Zn 0.5 S twinned phase junction nanosheets have superior hydrogen evolution activity 44,45. Figure7bexhibits the surface photovoltage (SPV) signal of Cd 1-x Zn x S (x = 0, 0.25, 0.5, and 0.75) photocatalysts.…”

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confidence: 99%

Cation exchange synthesis of porous Cd_1‐xZn_xS twinned nanosheets for visible light highly active H₂ evolution

Wang

Xiao

et al. 2021

J Am Ceram Soc.

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Efficient charge separation is critical for the enhancement of photocatalytic activity for hydrogen generation. The porous Cd 1-x Zn x S nanosheets with twinned phase junctions were synthesized by the cation-exchange approach of inorganicorganic hybrid ZnS-diethylenetriamine nanoflakes with cadmium ions. With the synergy of the phase junctions induced by nano twins and porous structure, the hydrogen evolution average rate over the optimal sample Cd 0.5 Zn 0.5 S photocatalyst reaches 14.44 mmol h −1 g −1 without noble metal loading under visible light irradiation, corresponding to apparent quantum efficiency of 37.3% at 420 nm and solar-to-hydrogen energy conversion efficiency of 3.46%. On the one hand, twin-induced phase junctions can improve the separation efficiency of photoelectron-hole pairs, on the other hand, the large specific surface area ascribed to the porous nanosheet can effectively improve the light absorption capacity of photocatalysis, and provide more surface active sites. This study could provide a facile approach to design and fabricate advanced materials with porous twinned phase junctions for photocatalytic applications and optoelectronic devices.

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“…And photoexcited e − in the CB of g‐C 3 N 4 also got together on NiP for hydrogen production (Figure 13). [84] …”

Section: Application Of Tmps In Photocatalytic H2 Evolutionmentioning

confidence: 99%

“…And photoexcited e À in the CB of g-C 3 N 4 also got together on NiP for hydrogen production (Figure 13). [84] The absorption of visible light, which accounts for about 42 % of the total energy of sunlight, is also one of the key factors affecting photocatalytic activity. Therefore, the WPdecorated Zn x Cd 1-x S composite was prepared by Yan et al [83] to achieve strong visible light absorption.…”

Section: Tmp/zn X Cd 1-x Smentioning

confidence: 99%

Recent Progress of Transition Metal Phosphides for Photocatalytic Hydrogen Evolution

et al. 2020

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Photocatalytic hydrogen evolution can effectively alleviate the troublesome global energy crisis by converting solar energy into the chemical energy of hydrogen. In order to realize efficient hydrogen generation, a variety of semiconductor materials have been extensively investigated, including TiO2, CdS, g‐C3N4, metal‐organic frameworks (MOFs), and others. In recent years, to achieve higher photocatalytic performance and reach the level of large‐scale industrial applications, photocatalysts decorated with transition metal phosphides (TMPs) have shone brightly because of their low cost, stable physical and chemical properties, and substitution for precious metals of TMPs. This Review highlights the preparation methods and properties associated with photocatalysis of TMPs. Moreover, the H2 generation efficiency of photocatalysts loaded with TMPs and the roles of TMPs in catalytic systems are also studied systematically. Apart from being co‐catalysts, several TMPs can also serve as host catalysts to boost the activity of photocatalytic composites. Finally, the development prospects and challenges of TMPs are put forward, which is valuable for future researchers to expand the application of TMPs in photocatalytic directions and to develop more active photocatalytic systems.

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Accelerated charge transfer of Cd_0.5Zn_0.5S@ZnS core–shell nano-spheres via decoration of Ni₂P and g-C₃N₄ toward efficient visible-light-driven H₂ production

Abstract: Unique Cd0.5Zn0.5S@ZnS-Ni2P/g-C3N4 hybrid nano-spheres demonstrate enhanced photostability, improved light-harvesting and facilitated charge separation toward efficient H2 evolution from visible-light-driven water-splitting.

Cited by 11 publications

References 62 publications

Semi‐Synthetic Chlorophyll‐Carotenoid Dyad for Dye‐Sensitized Photocatalytic Hydrogen Evolution

Semi‐Synthetic Chlorophyll‐Carotenoid Dyad for Dye‐Sensitized Photocatalytic Hydrogen Evolution

Cation exchange synthesis of porous Cd_1‐xZn_xS twinned nanosheets for visible light highly active H₂ evolution

Recent Progress of Transition Metal Phosphides for Photocatalytic Hydrogen Evolution

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Accelerated charge transfer of Cd0.5Zn0.5S@ZnS core–shell nano-spheres via decoration of Ni2P and g-C3N4 toward efficient visible-light-driven H2 production

Abstract: Unique Cd0.5Zn0.5S@ZnS-Ni2P/g-C3N4 hybrid nano-spheres demonstrate enhanced photostability, improved light-harvesting and facilitated charge separation toward efficient H2 evolution from visible-light-driven water-splitting.

Cited by 11 publications

References 62 publications

Semi‐Synthetic Chlorophyll‐Carotenoid Dyad for Dye‐Sensitized Photocatalytic Hydrogen Evolution

Semi‐Synthetic Chlorophyll‐Carotenoid Dyad for Dye‐Sensitized Photocatalytic Hydrogen Evolution

Cation exchange synthesis of porous Cd1‐xZnxS twinned nanosheets for visible light highly active H2 evolution

Recent Progress of Transition Metal Phosphides for Photocatalytic Hydrogen Evolution

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Accelerated charge transfer of Cd_0.5Zn_0.5S@ZnS core–shell nano-spheres via decoration of Ni₂P and g-C₃N₄ toward efficient visible-light-driven H₂ production

Cation exchange synthesis of porous Cd_1‐xZn_xS twinned nanosheets for visible light highly active H₂ evolution