☆ 4.8 Article

Carbon defective g-C3N4 thin-wall tubes for drastic improvement of photocatalytic H2 production

CARBON (2023)

Related references

Note: Only part of the references are listed.

Article Chemistry, Multidisciplinary

Unraveling the dual defect sites in graphite carbon nitride for ultra-high photocatalytic H2O2 evolution

Xu Zhang et al.

Summary: Defect engineering modified graphite carbon nitride (g-C3N4) with dual defect sites, -C N groups and N vacancies, has been found to significantly enhance the photocatalytic production of H2O2. The dual defect sites form an electron-rich structure and lead to a more localized charge density distribution, which improves light absorption, carrier separation, selectivity, and activity of H2O2 generation. The N vacancies effectively adsorb and activate O-2, while the -C N groups facilitate the adsorption of H+, synergistically promoting H2O2 generation. The modified g-C3N4 achieved a high H2O2 generation rate and apparent quantum efficiency, surpassing previously reported g-C3N4-based photocatalysts.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

Add to Collection

Article Chemistry, Inorganic & Nuclear

Interior and Surface Synergistic Modifications Modulate the SnNb2O6/Ni-Doped ZnIn2S4 S-Scheme Heterojunction for Efficient Photocatalytic H2 Evolution

Chunxue Li et al.

Summary: Synergistic modifications of the interior and surface can enhance the photocatalytic activity at the atomic level. A new 2D/2D SnNb2O6/Ni-doped ZnIn2S4 (SNO/Ni-ZIS) S-scheme heterojunction was synthesized and showed significantly improved PHE activity under visible light. Theoretical calculations revealed that the S-scheme heterojunction promotes the desorption of H atoms for rapid H2 evolution. This work provides advanced insight for developing high-performance S-scheme systems.

INORGANIC CHEMISTRY (2022)

Add to Collection

Article Materials Science, Multidisciplinary

Hierarchical red phosphorus incorporated TiO2 hollow sphere heterojunctions toward superior photocatalytic hydrogen production

Guiqing Huang et al.

Summary: In this study, RP modified TiO2 hollow spheres were used for solar-to-hydrogen conversion. The optimal hydrogen production rate was achieved with the TiO2@RP heterostructure under simulated solar light irradiation. The hollow sphere structure and RP light absorber extended light absorption ability, and the heterostructure induced interfacial charge migration facilitated photoinduced charge separation, resulting in enhanced photocatalytic hydrogen production performance.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

Add to Collection

Article Chemistry, Physical

Ultrathin porous carbon nitride nanosheets with well-tuned band structures via carbon vacancies and oxygen doping for significantly boosting H2 production

Bin Yang et al.

Summary: This study successfully increased the photocatalytic efficiency by synthesizing g-C3N4 nanosheets with controllable carbon vacancies and oxygen doping, providing a new design idea for highly active g-C3N4-based photocatalysts with well-tuned band structure.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Add to Collection

Review Physics, Multidisciplinary

Z-scheme systems: From fundamental principles to characterization, synthesis, and photocatalytic fuel-conversion applications

Guangfu Liao et al.

Summary: This review presents the recent discoveries and developments of Z-scheme photocatalysts for solar-driven fuel production. It provides an overview of the fundamental principles, characterization technologies, and synthesis methods of Z-scheme photocatalysts. Representative examples of Z-scheme photocatalysts for photocatalytic fuel-conversion applications are showcased. The review also discusses the major challenges, opportunities, and future prospects in the field. Z-scheme heterojunctions demonstrate great potential as highly efficient photocatalysts for various photocatalytic fuel-conversion applications.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2022)

Add to Collection

Review Chemistry, Multidisciplinary

Emerging frontiers of Z-scheme photocatalyric systems

Guangfu Liao et al.

Summary: This review highlights recent developments in Z-scheme photocatalysts, including fundamental principles, characterization methods, and applications. Significant improvement strategies are also discussed, and the future direction of this technology is predicted.

TRENDS IN CHEMISTRY (2022)

Add to Collection

Article Chemistry, Physical

Regulation of carboxyl groups and structural defects of graphitic carbon nitride via environmental-friendly glucose oxidase ring-opening modulation

Zhihao Zhang et al.

Summary: This study demonstrates that the enzyme-mediated defects control of g-C3N4 materials greatly enhances the photocatalytic performance, leading to a significantly higher Cr(VI) detoxification rate. The optimized photocatalyst prepared through enzyme treatment shows narrowed band gaps and fast charge separation ability, providing new insights into the function of structural defects in promoting charge separation in photocatalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Add to Collection

Article Chemistry, Physical

Phosphorus vapor assisted preparation of P-doped ultrathin hollow g-C3N4 sphere for efficient solar-to-hydrogen conversion

Sijie Lv et al.

Summary: In this study, a phosphorus vapor assisted synthetic strategy was used to fabricate P-doped ultrathin hollow g-C3N4 photocatalysts, which exhibited high photocatalytic hydrogen evolution performance. The ultrafast time-resolved spectroscopy was employed to reveal the charge dynamics in the P/UH-CNS system.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Add to Collection

Article Engineering, Environmental

In-situ self-assembly construction of hollow tubular g-C3N4 isotype heterojunction for enhanced visible-light photocatalysis: Experiments and theories

Qinghua Liang et al.

Summary: S doping in a highly reactive hollow tubular g-C3N4 isotype heterojunction (SCN-CN) enhances visible light absorption and directs the transfer of electrons and holes. The tubular structure of SCN-CN facilitates electron transfer in the longitudinal direction, reducing charge carrier recombination. Experimental and theoretical studies were conducted to analyze the optical properties, electronic structure, and electron transfer of SCN-CN.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Add to Collection

Article Nanoscience & Nanotechnology

Band Engineering and Morphology Control of Oxygen-Incorporated Graphitic Carbon Nitride Porous Nanosheets for Highly Efficient Photocatalytic Hydrogen Evolution

Yunyan Wu et al.

Summary: Hollow oxygen-incorporated g-C3N4 nanosheet (OCN) with improved surface area was successfully fabricated by multiple thermal treatments. The OCN exhibited excellent photocatalytic hydrogen evolution activity.

NANO-MICRO LETTERS (2021)

Add to Collection

Review Chemistry, Physical

Recent advances in anion doped g-C3N4 photocatalysts: A review

Sulagna Patnaik et al.

Summary: The rapid industrialization and globalization today have led to sustainable development of diversity, with photocatalytic nano-materials emerging to combat environmental pollution and energy crisis. Various modifications of g-C3N4 have been introduced to broaden its potential applications, with band gap engineering through elemental doping considered as a successful approach to modify its optical and electronic properties.

CARBON (2021)

Add to Collection

Article Chemistry, Multidisciplinary

Morphology Control in 2D Carbon Nitrides: Impact of Particle Size on Optoelectronic Properties and Photocatalysis

Julia Kroeger et al.

Summary: The study investigates the effect of ultrasonication on tuning the particle size and concentration of surface functional groups in the carbon nitride poly(heptazine imide) photocatalyst. It reveals that an optimal amount of defects can enhance the photocatalytic activity by promoting charge percolation, while excess terminal defects can act as recombination centers and decrease the photocatalytic activity for hydrogen evolution. Properly agglomerated small particles can partially restore the photocatalytic activity.

ADVANCED FUNCTIONAL MATERIALS (2021)

Add to Collection

Article Chemistry, Physical

A step-by-step synergistic stripping approach toward ultra-thin porous g-C3N4 nanosheets with high conduction band position for photocatalystic CO2 reduction

Bin Yang et al.

Summary: The ultra-thin porous g-C3N4 (THCN) demonstrated superior photocatalytic performance for CO2 reduction due to its high specific surface area, rich pores, efficient separation and utilization of carriers, and upper position of conduction band. The high specific surface area and unique structure of THCN also resulted in significantly better degradation of Rhodamine B compared to other materials. This study provides a reference for preparation of other two-dimensional ultra-thin materials for CO2 reduction.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2021)

Add to Collection

Article Chemistry, Physical

Amorphous Carbon Nitride with Three Coordinate Nitrogen (N3C) Vacancies for Exceptional NOx Abatement in Visible Light

Youyu Duan et al.

Summary: This study introduces a new amorphous carbon nitride material ACN, which demonstrates improved visible-light NOx removal efficiency, exceptional structural stability, and enhanced photocatalytic performance.

ADVANCED ENERGY MATERIALS (2021)

Add to Collection

Article Chemistry, Physical

Targeted regulation of exciton dissociation in graphitic carbon nitride by vacancy modification for efficient photocatalytic CO2 reduction

Fang Li et al.

Summary: The study focused on designing Nv-rich-CN to enhance carrier utilization and photocatalytic activity. Results showed that N vacancies effectively dissociate excitons into free charges and promote the process of CO2 photoreduction.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Add to Collection

Article Chemistry, Physical

Carbon nitride nanotubes with in situ grafted hydroxyl groups for highly efficient spontaneous H2O2 production

Liang Zhou et al.

Summary: A novel alkalinization process was used to successfully synthesize g-C3N4 (CN) nanotubes functionalized with surface > OH groups, which provide a large surface area and improved mass transfer properties for efficient H2O2 production. The in situ grafted > OH groups capture photogenerated holes, promoting charge separation and enabling the production of H2O2 without sacrificial agents. This work presents a new strategy for spontaneous H2O2 production using a metal-free CN photocatalyst.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Add to Collection

Article Chemistry, Physical

Hollow tubular carbon doping graphitic carbon nitride with adjustable structure for highly enhanced photocatalytic hydrogen production

Yuepeng Liu et al.

Summary: The study demonstrates the enhancement of photocatalytic performance of carbon nitride through carbon doping and hollow tubular structure, leading to a significant increase in hydrogen evolution rate. The carbon content has a significant impact on the structure and photocatalytic activity of carbon nitride, while the hollow tubular structure can increase the specific surface area and visible light absorption capacity.

CARBON (2021)

Add to Collection

Article Chemistry, Physical

1D/2D carbon-doped nanowire/ultra-thin nanosheet g-C3N4 isotype heterojunction for effective and durable photocatalytic H2 evolution

Bin Yang et al.

Summary: A simple and template-free strategy was developed to prepare 1D/2D g-C3N4 isotype heterojunction with high separation efficiency and strong visible light absorption. The isotype heterojunction significantly improved the photocatalytic H-2 evolution activity and stability.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2021)

Add to Collection

Article Chemistry, Physical

K+, Ni and carbon co-modification promoted two-electron O2 reduction for photocatalytic H2O2 production by crystalline carbon nitride

Yanfang Chen et al.

Summary: In this study, a novel approach was used to modify g-C3N4, resulting in the production of a highly efficient photocatalyst that significantly increases the yield of H2O2.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Add to Collection

Review Chemistry, Physical

C-, N-Vacancy defect engineered polymeric carbon nitride towards photocatalysis: viewpoints and challenges

Abhinandan Kumar et al.

Summary: Graphite-like carbon nitride (g-C3N4; GCN) is a metal-free polymeric semiconductor material with fascinating physicochemical and photoelectronic structural features, yet its wide-range applicability is limited by inherent drawbacks such as rapid reassembly of photocarriers and low specific surface area. Introducing vacancies into the framework of GCN to generate 0D point defects has shown potential in manipulating optical absorption, radiative carrier isolation, and surface photoreactions. Various advanced strategies for controlled designing of vacancy-rich GCN have been explored, highlighting the significance of defect engineering on optical absorption, charge isolation, and surface photoreaction ability in GCN. Applications of defect engineered GCN include photocatalytic water splitting, CO2 conversion, N-2 fixation, pollutant degradation, and H2O2 production.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Add to Collection

Review Chemistry, Physical

C-, N-Vacancy defect engineered polymeric carbon nitride towards photocatalysis: viewpoints and challenges

Abhinandan Kumar et al.

Summary: This review summarizes the comprehensive study on vacancy defect engineered GCN, discussing methods for introducing defects, their impact on GCN, advanced strategies for designing defect-rich GCN, and techniques for identifying defects. It also reviews the significance of defect engineering in GCN in terms of optical absorption, charge isolation, and surface photoreaction abilities, and scrutinizes the applications of defect engineered GCN in various areas like photocatalytic water splitting and CO2 conversion. The review concludes with insights on future challenges and opportunities in this intriguing and emerging field.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

Add to Collection

Article Chemistry, Multidisciplinary

[001]-Oriented Hittorf's Phosphorus Nanorods/Polymeric Carbon Nitride Heterostructure for Boosting Wide-Spectrum-Responsive Photocatalytic Hydrogen Evolution from Pure Water

Yukun Zhu et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2020)

Add to Collection

Article Chemistry, Physical

A bottom-up acidification strategy engineered ultrathin g-C3N4 nanosheets towards boosting photocatalytic hydrogen evolution

Longyan Wang et al.

CARBON (2020)

Add to Collection

Article Chemistry, Physical

Molecular engineering of supramolecular precursor to modulate g-C3N4 for boosting photocatalytic hydrogen evolution

Qian Yang et al.

CARBON (2020)

Add to Collection

Article Chemistry, Physical

On the analysis of diffuse reflectance measurements to estimate the optical properties of amorphous porous carbons and semiconductor/carbon catalysts

Getaneh Diress Gesesse et al.

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY (2020)

Add to Collection

Article Chemistry, Physical

1D porous tubular g-C3N4 capture black phosphorus quantum dots as 1D/0D metal-free photocatalysts for oxytetracycline hydrochloride degradation and hexavalent chromium reduction

Wenjun Wang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2020)

Add to Collection

Article Chemistry, Physical

A hierarchical carbon nitride tube with oxygen doping and carbon defects promotes solar-to-hydrogen conversion

Zongzhao Sun et al.

JOURNAL OF MATERIALS CHEMISTRY A (2020)

Add to Collection

Article Chemistry, Multidisciplinary

Facile in situ reductive synthesis of both nitrogen deficient and protonated g-C3N4 nanosheets for the synergistic enhancement of visible-light H2 evolution

Weisong Li et al.

CHEMICAL SCIENCE (2020)

Add to Collection

Article Chemistry, Physical

Supramolecular precursor strategy for the synthesis of holey graphitic carbon nitride nanotubes with enhanced photocatalytic hydrogen evolution performance

Xiaoshuai Wang et al.

NANO RESEARCH (2019)

Add to Collection

Article Chemistry, Physical

Formation of g-C3N4 Nanotubes towards Superior Photocatalysis Performance

Zhixiang Jiang et al.

CHEMCATCHEM (2019)

Add to Collection

Article Chemistry, Multidisciplinary

Synergy of Dopants and Defects in Graphitic Carbon Nitride with Exceptionally Modulated Band Structures for Efficient Photocatalytic Oxygen Evolution

Daming Zhao et al.

ADVANCED MATERIALS (2019)

Add to Collection

Article Chemistry, Physical

Red phosphorus decorated and doped TiO2 nanofibers for efficient photocatalytic hydrogen evolution from pure water

Yukun Zhu et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

Add to Collection

Article Chemistry, Physical

Porous nitrogen-rich g-C3N4 nanotubes for efficient photocatalytic CO2 reduction

Zhao Mo et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2019)

Add to Collection

Article Chemistry, Physical

NH4Cl-induced low-temperature formation of nitrogen-rich g-C3N4 nanosheets with improved photocatalytic hydrogen evolution

Xinhe Wu et al.

CARBON (2019)

Add to Collection

Article Chemistry, Physical

Ultrathin g-C3N4 with enriched surface carbon vacancies enables highly efficient photocatalytic nitrogen fixation

Yi Zhang et al.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2019)

Add to Collection

Article Multidisciplinary Sciences

Revisiting the optical bandgap of semiconductors and the proposal of a unified methodology to its determination

A. R. Zanatta

SCIENTIFIC REPORTS (2019)

Add to Collection

Article Chemistry, Multidisciplinary

Phosphorus Quantum Dots-Facilitated Enrichment of Electrons on g-C3N4 Hollow Tubes for Visible-Light-Driven Nicotinamide Adenine Dinucleotide Regeneration

Dong Yang et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2019)

Add to Collection

Article Chemistry, Physical

Carbon-vacancy modified graphitic carbon nitride: enhanced CO2 photocatalytic reduction performance and mechanism probing

Meng Shen et al.

JOURNAL OF MATERIALS CHEMISTRY A (2019)

Add to Collection

Article Chemistry, Physical

The doping of phosphorus atoms into graphitic carbon nitride for highly enhanced photocatalytic hydrogen evolution

Xiao-Xiang Fang et al.

JOURNAL OF MATERIALS CHEMISTRY A (2019)

Add to Collection

Review Chemistry, Multidisciplinary

Semiconductor polymeric graphitic carbon nitride photocatalysts: the holy grail for the photocatalytic hydrogen evolution reaction under visible light

Guangfu Liao et al.

ENERGY & ENVIRONMENTAL SCIENCE (2019)

Add to Collection

Article Multidisciplinary Sciences

Automated method for the determination of the band gap energy of pure and mixed powder samples using diffuse reflectance spectroscopy

A. Escobedo-Morales et al.

HELIYON (2019)

Add to Collection

Article Chemistry, Physical

Salt-enhanced photocatalytic hydrogen production from water with carbon nitride nanorod photocatalysts: cation and pH dependence

Xiaobo Li et al.

JOURNAL OF MATERIALS CHEMISTRY A (2019)

Add to Collection

Article Nanoscience & Nanotechnology

Reconstructing Supramolecular Aggregates to Nitrogen-Deficient g-C3N4 Bunchy Tubes with Enhanced Photocatalysis for H-2 Production

Guifang Ge et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

Add to Collection

Article Chemistry, Physical

Carbon vacancy-induced enhancement of the visible light-driven photocatalytic oxidation of NO over g-C3N4 nanosheets

Yuhan Li et al.

APPLIED SURFACE SCIENCE (2018)

Add to Collection

Article Chemistry, Multidisciplinary

Self-Assembled Mesoporous Carbon Nitride with Tunable Texture for Enhanced Visible-Light Photocatalytic Hydrogen Evolution

Shuo Zhao et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2018)

Add to Collection

Article Chemistry, Physical

Self-assembly synthesis of boron-doped graphitic carbon nitride hollow tubes for enhanced photocatalytic NOx removal under visible light

Zhenyu Wang et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2018)

Add to Collection

Article Chemistry, Multidisciplinary

Wall-Mesoporous Graphitic Carbon Nitride Nanotubes for Efficient Photocatalytic Hydrogen Evolution

Jiaxin Bai et al.

CHEMISTRY-AN ASIAN JOURNAL (2018)

Add to Collection

Article Chemistry, Physical

Effective photocatalytic H2O2 production under visible light irradiation at g-C3N4 modulated by carbon vacancies

Shuna Li et al.

APPLIED CATALYSIS B-ENVIRONMENTAL (2016)

Add to Collection

Article Multidisciplinary Sciences

Spatial separation of photogenerated electrons and holes among {010} and {110} crystal facets of BiVO4

Rengui Li et al.

NATURE COMMUNICATIONS (2013)

Add to Collection

Article Chemistry, Physical

Chemical exfoliation of graphitic carbon nitride for efficient heterogeneous photocatalysis

Jing Xu et al.

JOURNAL OF MATERIALS CHEMISTRY A (2013)

Add to Collection

Article Chemistry, Multidisciplinary

Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities

Ping Niu et al.

ADVANCED FUNCTIONAL MATERIALS (2012)

Add to Collection

Article Materials Science, Ceramics

Band-gap energy estimation from diffuse reflectance measurements on sol-gel and commercial TiO2: a comparative study

Rosendo Lopez et al.

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY (2012)

Add to Collection

© Peeref 2019-2024. All rights reserved.