Semi-chemical interaction between graphitic carbon nitride and Pt for boosting photocatalytic hydrogen evolution

Zhong, Zi‐Ai; Chen, Lisha; Zhang, Longshuai; Wu, Feiyao; Jiang, Xun‐Heng; Liu, Haiyan; Lv, Fengrong; Xie, Haiyang; Meng, Fanqi; Zheng, Ling‐Ling; Zou, Jian‐Ping

doi:10.1016/j.cclet.2021.09.057

Cited by 15 publications

(5 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The stronger the relative intensity of the photocurrent effect of the catalyst, the faster the reaction that the catalyst responds to light. This usually means that the catalyst has higher photocatalytic activity and better photoelectric conversion efficiency . This may be due to the formation of an S-scheme heterojunction between ZnCdS and NiCo-LDH, and when the composite catalyst receives photoexcitation, a large number of photogenerated electrons are rapidly separated from the photogenerated holes under the action of the built-in electric field.…”

Section: Resultsmentioning

confidence: 99%

“…This usually means that the catalyst has higher photocatalytic activity and better photoelectric conversion efficiency. 62 This may be due to the formation of an S-scheme heterojunction between ZnCdS and NaOH upon the light exposure. In other words, the addition of NiCo-LDH will make the composite catalyst more oxidizing.…”

Section: Uv−vis Drs Analysis and Energy Band Analysismentioning

confidence: 99%

See 1 more Smart Citation

S-Scheme Heterojunction ZnCdS Nanoparticles on Layered Ni–Co Hydroxide for Photocatalytic Hydrogen Evolution

Wen,

Guo,

Liu

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Photocatalytic hydrogen evolution technology faces great challenges in designing efficient and stable hydrogen evolution catalysts that absorb visible light. In this study, a catalyst with S-scheme heterojunction and built-in electric fields was successfully prepared by electrostatic self-assembly to load ZnCdS nanoparticles on layered Ni−Co. The ZnCdS/NiCo layered double hydroxide (NiCo-LDH) test demonstrates that the Sscheme heterojunction and built-in electric fields effectively inhibit the recombination of photogenerated electrons and holes, lowering impedance and increasing photocurrent. Additionally, more photogenerated electrons can take part in the reduction reaction, producing more H 2 . It is worth noting that the hydrogen evolution of ZnCdS/NiCo-LDH is 1153 μmol in 5 h, which is 10 times that of ZnCdS. We analyze the electron transport process, construction of a built-in electric field, and formation of the S-scheme of this catalyst during hydrogen evolution by in situ X-ray photoelectron spectroscopy. This study provides a new perspective for the application of ZnCdS and LDH in photocatalysis and a new direction for the breakthrough of photocatalytic hydrogen evolution research.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Uv−vis Drs Analysis and Energy Band Analysismentioning

confidence: 99%

S-Scheme Heterojunction ZnCdS Nanoparticles on Layered Ni–Co Hydroxide for Photocatalytic Hydrogen Evolution

Wen,

Guo,

Liu

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Regarding the reduction of water (HER), platinum is one of the most efficient cocatalysts for H 2 production and has been widely used in enhancing the performance of C 3 N 4 -based materials. 21,285,286,328,331–333,471,483–486 Li et al employed Pt single-atoms as a cocatalyst for g-C 3 N 4 in the HER. In their work, it is shown that isolated Pt single-atoms induce an intrinsic change of the surface trap states leading to a longer lifetime of photogenerated electrons and thereby improving photocatalytic performance (Fig.…”

Section: Catalytic Applicationsmentioning

confidence: 99%

Carbon nitride based materials: more than just a support for single-atom catalysis

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Recently, the copolymerization of g-C 3 N 4 precursor with organic monomers has been regarded as an efficient route, not only for modulating the electronic and band structure of g-C 3 N 4 via control of its π-conjugate aromatic system to improve the photocatalytic activity and selectivity of pristine g-C 3 N 4 but also to pave the way for further modification of g-C 3 N 4 with sensitizers and cocatalysts [44][45][46][47][48][49]. For instance, Wang et al obtained modified g-C 3 N 4 by simple copolymerization with organic monomers like barbituric acid for efficient photocatalytic hydrogen production [41].…”

Section: Introductionmentioning

confidence: 99%

Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production

et al. 2022

View full text Add to dashboard Cite

Two-dimensional graphitic carbon nitrides (2D g-C3N4) are promising photocatalysts for water splitting to hydrogen due to their non-toxicity and high stability. However, the bulk g-C3N4 has some intrinsic drawbacks, such as rapid electron–hole recombination and low charge-carrier mobility, resulting in poor photocatalytic activity. Here, 2,4-diamine-6-phenyl-1,3,5-triazine was employed as a precursor to regulating the assembly of melamine and cyanuric acid in water. The resulting g-C3N4 not only improved the visible light absorption and electron–hole separation but also provided more catalytic sites for enhanced photocatalytic hydrogen evolution. The modified g-C3N4 (CNP10-H) showed a hydrogen-releasing rate of 2184 μmol·g−1·h−1, much higher than the bulk g-C3N4.

show abstract

Semi-chemical interaction between graphitic carbon nitride and Pt for boosting photocatalytic hydrogen evolution

Cited by 15 publications

References 37 publications

S-Scheme Heterojunction ZnCdS Nanoparticles on Layered Ni–Co Hydroxide for Photocatalytic Hydrogen Evolution

S-Scheme Heterojunction ZnCdS Nanoparticles on Layered Ni–Co Hydroxide for Photocatalytic Hydrogen Evolution

Carbon nitride based materials: more than just a support for single-atom catalysis

Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production

Contact Info

Product

Resources

About