4.7 Article

G-C3N4 sheet nanoarchitectonics with island-like crystalline/amorphous homojunctions towards efficient H2 and H2O2 evolution

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Chemistry, Physical

Two-step polymerization nanoarchitectonics for superior thin g-C3N4 nanosheets with modulated band gap and enhanced photo- and electro-chemical performance

Chuanhao Li et al.

Summary: This paper demonstrates the synthesis of high-quality thin g-C3N4 homojunctions by controlling precursor components during the seed growth process. The resulting samples showed changes in microstructure, band gap, and photoelectrochemical properties. Photocatalytic activities were tested through H2 generation and the photodegradation of Rhodamine B (Rh B). The formation of homojunctions improves the photoelectrocatalytic activities.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2023)

Article Engineering, Environmental

A novel g-C3N4/g-C3N4_x homojunction with efficient interfacial charge transfer for photocatalytic degradation of atrazine and tetracycline

Chengyang Feng et al.

Summary: This study successfully prepared a photocatalyst with high optical absorption rate and charge separation efficiency by combining defect engineering with a built-in electric field, and investigated its purification effect in different water environments.

JOURNAL OF HAZARDOUS MATERIALS (2023)

Article Environmental Sciences

La2Ti2O7 nanosheets modified by Pt quantum dots for efficient NO removal avoiding NO2 secondary pollutant

Li Lv et al.

Summary: Two-dimensional La2Ti2O7 nanosheets with regular morphology and good dispersion were synthesized by a hydrothermal method under a magnetic field. Zero-dimensional Pt quantum dots were successfully loaded on the La2Ti2O7 nanosheets, which significantly enhanced the electron-hole separation and carrier transfer. The Pt-loaded La2Ti2O7 nanosheets exhibited a high photocatalytic ability for NO removal, with an efficiency of 51% for NO removal and low levels of NO2 intermediate pollutant.

ENVIRONMENTAL RESEARCH (2023)

Article Chemistry, Physical

Surface-assisted synthesis of biomass carbon-decorated polymer carbon nitride for efficient visible light photocatalytic hydrogen evolution

Lin Lei et al.

Summary: Template is commonly used to tune the nanomorphology of photocatalysts, but its influence on precursor polymerization and composition is often overlooked. In this study, a biomass carbon-modified graphitic carbon nitride (CCNx) with a thin-layer morphology was synthesized via one-pot surface-assisted polymerization. The hydrogen bond between melamine and yeast induced strong interfacial confinement, resulting in small-sized CCNx particles. Additionally, the carbon materials derived from yeast significantly improved visible light harvesting, electron delocalization, and charge carrier separation. The optimized CCNx exhibited a much higher photocatalytic hydrogen production rate under visible light irradiation, showing the potential of biomass templates in developing efficient metal-free photocatalysts.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2023)

Article Chemistry, Physical

N-doped carbon layer promoted charge separation/transfer in WP/g-C3N4 heterostructures for efficient H2 evolution and 4-nitrophenol removal

Tong Song et al.

Summary: Monodispersed WP nanoparticles were encapsulated in nitrogen-doped carbon (NC) layers to form WP@NC nanocomposites. These nanocomposites showed enhanced electrocatalytic hydrogen evolution reaction (HER) activities and improved photocatalytic hydrogen generation and 4-NP elimination efficiencies.

CARBON (2023)

Article Engineering, Environmental

Highly efficient photocatalytic H2O2 production with cyano and SnO2 co-modified g-C3N4

Chengcheng Chu et al.

Summary: In this study, the photocatalytic properties of g-C3N4 for H2O2 production were enhanced by co-modification with cyano group and SnO2 nanocrystal. The modified g-C3N4 showed excellent performance with a H2O2 yield rate of 703.4 mu M g(-1)h(-1) under visible light illumination, indicating a promising approach to improve the photocatalytic activity of g-C3N4.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Physical

Crystalline Intramolecular Ternary Carbon Nitride Homojunction forPhotocatalytic Hydrogen Evolution

Zhihan Yu et al.

Summary: The crystalline C3N4(HCCN) samples prepared by multistep thermal polymerization with functional group modifications can form a special ternary intramolecular homojunction. This ternary structure accelerates interface charge transfer, reduces reverse charge recombination, and improves the dissociation of photogenerated charges.

ACS CATALYSIS (2022)

Article Chemistry, Physical

Protonated g-C3N4 coated Co9S8 heterojunction for photocatalytic H2O2 production

Han Zhang et al.

Summary: A type-II heterojunction of protonated g-C3N4 coated Co9S8 semiconductor was constructed for photocatalytic H2O2 production. The photocatalytic system achieved considerable productivity of H2O2 in alkaline medium without the need for organic electron donors or pure O2. The optimal photocatalyst also exhibited good reusability.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

Article Chemistry, Physical

High-crystalline/amorphous g-C3N4 S-scheme homojunction for boosted photocatalytic H2 production in water/simulated seawater: Interfacial charge transfer and mechanism insight

Haoran Sun et al.

Summary: This study successfully applied high-crystalline/amorphous g-C3N4 S-scheme homojunctions in photocatalytic H2 production in water and seawater, and found the optimal conditions for the highest H2 evolution rates.

APPLIED SURFACE SCIENCE (2022)

Review Engineering, Environmental

Controlled oxygen doping in highly dispersed Ni-loaded g-C3N4 nanotubes for efficient photocatalytic H2O2 production

Ruifeng Du et al.

Summary: An oxygen-doped tubular g-C3N4 material with uniformly dispersed nickel nanoparticles was developed for efficient photocatalytic hydrogen peroxide generation.

CHEMICAL ENGINEERING JOURNAL (2022)

Review Chemistry, Physical

Homojunction photocatalysts for water splitting

Xiangjiu Guan et al.

Summary: Charge-carrier separation is a critical issue in photocatalytic water splitting and can be accelerated by constructing microscopic junctions in photocatalysts. Homojunction photocatalysts, composed of different forms of semiconductor with identical compositions, can inherit the advantages of heterojunction-based photocatalysts in charge separation while avoiding potential drawbacks. Recently, homojunction-based photocatalysts have gained significant attention in water splitting.

NANO RESEARCH (2022)

Article Chemistry, Applied

Hydrophilic bi-functional B-doped g-C3N4 hierarchical architecture for excellent photocatalytic H2O2 production and photoelectrochemical water splitting

Yang Ding et al.

Summary: This study demonstrates the synthesis of a hydrophilic bi-functional hierarchical architecture of boron-doped graphitic carbon nitride (g-C3N4) material. The hierarchical structure enables highly enhanced visible light absorption and photogenerated carrier separation, leading to excellent photocatalytic performance and high photoelectric current density. This research is of great importance for the practical application of metal-free g-C3N4 photocatalysts.

JOURNAL OF ENERGY CHEMISTRY (2022)

Article Chemistry, Multidisciplinary

Heterojunction nanoarchitectonics with SnS2/g-C3N4 S-scheme toward enhanced photooxidation and photoreduction

Tong Song et al.

Summary: Novel g-C3N4/SnS2 van der Waals heterojunctions were fabricated for efficient photocatalytic oxidation and reduction activities. S-scheme charge migration path was confirmed and enhanced charge transfer was achieved through the 2D/2D interfaces, powerful internal electric field, and band bending effect. The heterojunctions exhibited excellent activities in the photooxidation of 2,4-dichlorophenol (2,4-DCP) and the photoreduction of Cr(VI), as well as enhanced hydrogen evolution. This work provides new insights for constructing S-scheme multifunctional g-C3N4-based photocatalysts.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2022)

Article Chemistry, Physical

Modification of g-C3N4 with hydroxyethyl cellulose as solid proton donor via hydrogen bond to enhance H2O2 production

Pengyan Zhang et al.

Summary: In this study, hydroxyethyl cellulose (HEC) was used as a solid proton donor to modify graphitic carbon nitride (g-C3N4) via hydrogen bonds, resulting in improved H2O2 production performance.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Engineering, Environmental

Black magnetic Cu-g-C3N4 nanosheets towards efficient photocatalytic H2 generation and CO2/benzene conversion

Xiao Zhang et al.

Summary: Copper clusters are incorporated into graphitic carbon nitride via a two-step thermal polymerization process, forming a superior Cu-g-C3N4 composite with highly efficient charge transfer and enhanced photocatalytic activity. The black Cu-g-C3N4 nanosheets exhibit enhanced ferromagnetism, providing fundamental knowledge of Cu-incorporated g-C3N4 composite material. This composite also shows excellent visible-light-responsive photocatalytic hydrogen generation and benzene oxidation performance.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Engineering, Environmental

Cobalt clusters on g-C3N4 nanosheets for enhanced H2/H2O2 generation and NO removal

Tong Song et al.

Summary: A one-step thermal polymerization method was used to create metallic cobalt clusters on graphitic carbon nitride nanosheets, with the size and distribution of the clusters controlled by subsequent acid treatment. The optimized nanoarchitectonics showed excellent photocatalytic activities, such as visible-light photocatalytic hydrogen generation and NO removal. Furthermore, heat treatment at high temperature resulted in the creation of cobalt clusters decorated N-doped carbon nanosheets, which exhibited ideal performance in various reactions.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

Article Engineering, Environmental

Fabrication of ultra-thin g-C3N4 nanoplates for efficient visible-light photocatalytic H2O2 production via two-electron oxygen reduction

Wei Liu et al.

Summary: The ultrathin graphitic carbon nitride (g-C3N4) nanoplates showed excellent H2O2 production performance due to the increased surface area and stronger redox ability provided by its ultrathin structure.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Physical

A novel sulfur-assisted annealing method of g-C3N4 nanosheet compensates for the loss of light absorption with further promoted charge transfer for photocatalytic production of H2 and H2O2

Chengyang Feng et al.

Summary: Sulfur doping can regulate the band structure of g-C3N4, enhance its optical absorption ability, introduce new absorption bands, and create local electron accumulation points, thereby improving charge separation efficiency and surface charge transfer ability.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Energy & Fuels

Uniformly Dispersed Metal Sulfide Nanodots on g-C3N4 as Bifunctional Catalysts for High-Efficiency Photocatalytic H2 and H2O2 Production under Visible-Light Irradiation

Lei Chen et al.

Summary: Loading transition metal as a cocatalyst onto a photocatalyst is a promising way to enhance photocatalytic reactions. In this study, nickel sulfide nanodots were successfully deposited onto g-C3N4 surface using a light-induced deposition approach, resulting in improved photocatalytic performances for both H-2 evolution and oxygen reduction. The bifunctional catalyst exhibited remarkable activity and stability, attributed to the accurate loading of nickel sulfide nanodots on g-C3N4 nanosheets, boosting charge carrier separation and accelerating chemical reactions on the photocatalyst surface.

ENERGY & FUELS (2021)

Article Chemistry, Physical

Photo-chemical property evolution of superior thin g-C3N4 nanosheets with their crystallinity and Pt deposition

Xiao Zhang et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2020)

Article Chemistry, Physical

Recent advances in surface and interface design of photocatalysts for the degradation of volatile organic compounds

Qi Li et al.

ADVANCES IN COLLOID AND INTERFACE SCIENCE (2020)

Article Materials Science, Multidisciplinary

Photo- and electro-catalysis evolution of superior thin g-C3N4 nanosheets with their microstructure and Ni-Fe oxide composite

Yuxiang Song et al.

MATERIALS CHARACTERIZATION (2020)

Article Chemistry, Multidisciplinary

Construction of 2D g-C3N4 lateral-like homostructures and their photo- and electro-catalytic activities

Xiao Zhang et al.

CHEMICAL COMMUNICATIONS (2019)

Article Chemistry, Multidisciplinary

An amorphous/crystalline g-C3N4 homojunction for visible light photocatalysis reactions with superior activity

Zhiguo Liu et al.

CHEMICAL COMMUNICATIONS (2018)

Article Chemistry, Physical

Toward the Decentralized Electrochemical Production of H2O2: A Focus on the Catalysis

Sungeun Yang et al.

ACS CATALYSIS (2018)

Review Chemistry, Multidisciplinary

Two-dimensional covalent carbon nitride nanosheets: synthesis, functionalization, and applications

Jinshui Zhang et al.

ENERGY & ENVIRONMENTAL SCIENCE (2015)

Article Nanoscience & Nanotechnology

In Situ Construction of g-C3N4/g-C3N4 Metal-Free Heterojunction for Enhanced Visible-Light Photocatalysis

Fan Dong et al.

ACS APPLIED MATERIALS & INTERFACES (2013)

Article Chemistry, Multidisciplinary

Graphene-Like Carbon Nitride Nanosheets for Improved Photocatalytic Activities

Ping Niu et al.

ADVANCED FUNCTIONAL MATERIALS (2012)

Review Chemistry, Multidisciplinary

Nano-photocatalytic Materials: Possibilities and Challenges

Hua Tong et al.

ADVANCED MATERIALS (2012)