One-pot synthesis of defect engineered carbon nitride for highly efficient visible light photocatalysis

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(9), P. 5204 - 5214

Published: Jan. 1, 2024

Solvothermally prepared defect-engineered CN samples, featuring surface cyano groups and carbon doping, enhance light absorption charge separation, significantly improving visible photodegradation.

Language: Английский

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S‐Modified Graphitic Carbon Nitride with Double Defect Sites For Efficient Photocatalytic Hydrogen Evolution

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 3, 2024

Abstract Graphitic carbon nitride (gC 3 N 4 ) is an attractive photocatalyst for solar energy conversion due to its unique electronic structure and chemical stability. However, gC generally suffers from insufficient light absorption rapid compounding of photogenerated charges. The introduction defects atomic doping can optimize the improve carrier separation efficiency. Herein, high efficiency photocatalysis hydrogen evolution in visible achieved by S‐modified double‐deficient site strategy. Defect engineering forms abundant unsaturated sites cyano (─C≡N), which promotes strong interlayer C─N bonding interactions accelerates charge transport . S tunes semiconductors, formation C─S─C bonds optimizes electron‐transfer paths bonding, enhances light. Meanwhile,C≡N acts as electron trap capture photoexcited electrons, providing active reduction H + hydrogen. photocatalytic SDCN (1613.5 µmol g −1 h 31.5 times higher than that pristine MCN (51.2 ). situation transfer mechanism photocatalysts are investigated detail a combination experimental theoretical calculations.

Language: Английский

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Sulfur-doped carbon nitride functionalized PVDF membrane with S⋯H N bridge induced fast carrier transfer for bifunctional H2O2 and H2 production

Applied Surface Science, Journal Year: 2024, Volume and Issue: 654, P. 159463 - 159463

Published: Jan. 23, 2024

Language: Английский

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Driving tetracycline hydrochloride degradation and concomitant hydrogen peroxide photosynthesis in a neutral environment over sulphur and oxygen codoped carbon nitride

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 446, P. 141391 - 141391

Published: Feb. 21, 2024

Language: Английский

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Heterostructured Photocatalysts for Water Splitting and the Interfacial Charge Transfer

ACS Materials Letters, Journal Year: 2024, Volume and Issue: unknown, P. 3572 - 3601

Published: July 15, 2024

Language: Английский

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Efficient photocatalytic H2 evolution over tubular mesoporous carbon nitride with N-vacancy by microwave-assisted synthesis

Science China Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

Language: Английский

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Advance in the modification of g-C3N4-based composite for photocatalytic H2 production

Carbon letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Language: Английский

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N-Deficient B-Doped g-C₃N₄/CdS Heterojunction-Based PEC-FL Biosensor Assisted by CRISPR-Cas12a System for Ultrasensitive Determination of microRNA

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Near-infrared light (NIR)-driven photoelectrochemical (PEC) processes are mainly faced with the limitation of weak photocurrents. Here, N-deficient B-doped g-C3N4/CdS (NB-g-C3N4/CdS) is proposed to construct a NIR-driven PEC biosensor assisted by CRISPR-Cas12a system for determination microRNA-21 (miRNA-21). To promote optical absorption as well separation photogenerated electrons and holes g-C3N4, NB-g-C3N4/CdS constructed via engineering electronic band structure in terms N defect, B doping, heterojunction, achieving high performance. obtain luminescence efficiency exciting under NIR, core–shell NaYF4:Yb3+, Tm3+@NaYF4 upconversion nanoparticles (UCNPs) repaired defects prepared. Furthermore, rolling circle amplification (RCA)-assisted integrated fragment DNA on UCNPs, sensitive detection miRNA-21. On one hand, uncleavaged signal probes UCNPs combined through π–π stacking interaction, generating photocurrents irradiation NIR. other cleavaged which cannot link exhibited fluorescence (FL) signals. The PEC-FL dual-mode provides mutual authentication testing results demonstrates ultrasensitivity (the limit 1.1 fM mode 7.0 FL mode) excellent specificity, promising clinical analysis miRNA.

Language: Английский

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Cu-based materials: Design strategies (hollow, core-shell, and LDH), sensing performance optimization, and applications in small molecule detection

Coordination Chemistry Reviews, Journal Year: 2023, Volume and Issue: 497, P. 215450 - 215450

Published: Sept. 27, 2023

Language: Английский

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Design of a Single‐Atom In–N₃–S site to Modulate Exciton Behavior in Carbon Nitride for Enhanced Photocatalytic Performance

Small, Journal Year: 2023, Volume and Issue: 20(24)

Published: Dec. 31, 2023

Rational tailoring of the local coordination environment single atoms has demonstrated a significant impact on electronic state and catalytic performance, but development catalysts beyond noble/transition metals is profoundly highly desired. Herein, main-group metal indium (In) atom immobilized sulfur-doped porous carbon nitride nanosheets (In@CNS) in form three nitrogen coordinated with one sulfur (In-N

Language: Английский

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