4.7 Article

Unveiling the origin of high-efficiency charge transport effect of C3N5/C3N4 homojunction for activating peroxymonosulfate to degrade atrazine under visible light

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Phosphorus and kalium co-doped g-C3N4 with multiple-locus synergies to degrade atrazine: Insights into the depth analysis of the generation and role of singlet oxygen

Yaocheng Deng et al.

Summary: In this study, phosphorus and kalium co-doped g-C3N4 with cyano and nitrogen vacancies (PKCN) was prepared via a simple thermal treatment. The prepared PKCN exhibited excellent singlet oxygen generation ability and efficiently degraded atrazine under visible light. Density functional theory calculations revealed the synergistic effect of different active units in efficient singlet oxygen generation. Additionally, the photocatalytic process significantly reduced the toxicity of atrazine.

APPLIED CATALYSIS B-ENVIRONMENTAL (2023)

Article Engineering, Environmental

Thin-walled vesicular Triazole-CN-PDI with electronic n?p* excitation and directional movement for enhanced atrazine photodegradation

Rongdi Tang et al.

Summary: In this study, triazole and pyromellitic diimide were used to modify polymeric carbon nitride (PCN) and fabricate TA-CN-PDI, a catalyst that promotes the photodegradation of atrazine. The vesicular morphology and the donor-pi-acceptor electronic structure synergistically enhance the photoactivity of the catalyst.

CHEMICAL ENGINEERING JOURNAL (2023)

Article Engineering, Environmental

Three-dimensional C3N5/RGO aerogels with enhanced visible-light response and electron-hole separation efficiency for photocatalytic uranium reduction

Linzhen Wu et al.

Summary: Uranium is a critical resource in the nuclear fuel cycle and a global environmental pollutant with dual effects of radioactivity and chemical toxicity. Reducing soluble U(VI) to relatively immovable U(IV) through photocatalytic technology can effectively decrease environmental pollution and enhance photocatalytic efficiency. The novel C3N5/reduced graphene oxide (C3N5/RGO) aerogel photocatalyst, with its 3D macroscopic morphology and microscopic 2D/2D Mott Schottky heterostructure, demonstrates high uranium removal rates and pollution resistance, offering a feasible solution for treating wastewater with nuclear radioactivity.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Engineering, Environmental

π-π Stacked step-scheme PDI/g-C3N4/TiO2@Ti3C2 photocatalyst with enhanced visible photocatalytic degradation towards atrazine via peroxymonosulfate activation

Rongdi Tang et al.

Summary: The novel pi-pi stacked PDI/g-C3N4/TiO2@Ti3C2 photocatalyst with S-scheme heterojunction effectively boosted the degradation of atrazine by activating peroxymonosulfate. The synergy of pi-pi interaction and S-scheme heterojunction promoted the removal of ATZ to 75% within one hour, and further investigation on reaction mechanisms and product transformation was conducted, resulting in a mineralization rate of 46.08% for ATZ.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Engineering, Environmental

Metal-free 2D/2D C3N5/GO nanosheets with customized energy-level structure for radioactive nuclear wastewater treatment

Qi Meng et al.

Summary: Researchers prepared metal-free 2D/2D C3N5/GO nanosheets and customized a type-II heterojunction based on band bending theory to enhance uranium extraction capacity. The structure of C3N5 was explained through electron energy loss spectroscopy and synchrotron-based X-ray absorption fine structure, showing a expanded light response range compared to C3N4. Density functional theory was used to demonstrate the presence of alternating energy levels for continuous injection of photogenerated electrons into the surface of GO, resulting in effective electron-hole pair separation and increased material activity. The 2D/2D C3N5/GO heterojunction achieved a high uranium removal ratio of 96.1% even at low concentration and 93.4% after gamma-ray exposure, laying a foundation for future customization of nonmetal-based 2D/2D nanohybrids for uranium-containing wastewater enrichment.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Article Engineering, Environmental

π-π stacking derived from graphene-like biochar/g-C3N4 with tunable band structure for photocatalytic antibiotics degradation via peroxymonosulfate activation

Rongdi Tang et al.

Summary: Enteromorpha biochar modified g-C3N4 (BC/CN) was synthesized and applied to efficiently degrade tetracycline, showing good performance under different environmental conditions.

JOURNAL OF HAZARDOUS MATERIALS (2022)

Review Chemistry, Multidisciplinary

Surface Modification of 2D Photocatalysts for Solar Energy Conversion

Chengyang Feng et al.

Summary: This article introduces the research progress in 2D photocatalysts based on varied compositions and functions, as well as specific surface modification strategies. The fundamental principles focusing on light harvesting, charge separation, and molecular adsorption/activation in the 2D-material-based photocatalytic system are systematically explored. Examples of various photocatalytic energy-conversion systems using 2D materials are described. Finally, the challenges and possible solutions for developing these 2D materials are discussed.

ADVANCED MATERIALS (2022)

Article Chemistry, Physical

Unique g-C3N4/PDI-g-C3N4 homojunction with synergistic piezo-photocatalytic effect for aquatic contaminant control and H2O2 generation under visible light

Rongdi Tang et al.

Summary: In this study, a g-C3N4/PDI-g-C3N4 homojunction was fabricated for piezo-photocatalytic atrazine removal, demonstrating superior performance compared to individual photocatalysis or piezocatalysis. The introduction of PDI facilitated electron migration and enhanced piezoelectricity, with the homojunction promoting photoelectron transfer. The porous structure of the g-C3N4/PDI-g-C3N4 was found to be essential for the enhanced piezoelectricity, leading to a high atrazine degradation rate and H2O2 production during the piezo-photocatalytic process.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Multidisciplinary Sciences

Angstrom-confined catalytic water purification within Co-TiOx laminar membrane nanochannels

Chenchen Meng et al.

Summary: The global shortage of freshwater and inadequate access to clean water have led to the development of efficient technologies for water purification. Heterogeneous catalysis is a highly promising solution and sub-nanometer-confined reactions have been found to achieve unprecedented reaction rates. This study successfully demonstrates the degradation of water contaminants at an incredibly fast rate using a two-dimensional laminate membrane assembled from cobalt-doped titanium oxide nanosheets.

NATURE COMMUNICATIONS (2022)

Article Chemistry, Physical

Construction of rGO-coupled C3N4/C3N5 2D/2D Z-scheme heterojunction to accelerate charge separation for efficient visible light H2 evolution

Dong Liu et al.

Summary: A novel N-rich carbon nitride material C3N5 was designed and prepared in this study, which formed a sandwich heterojunction with C3N4, demonstrating a synergistic effect of electron-rich and hole-rich reservoirs. The 2D/2D heterojunction was applied to achieve efficient visible-light-responsive activity for H2 evolution reaction.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Engineering, Environmental

Degradation of aqueous bisphenol A in the CoCN/Vis/PMS system: Catalyst design, reaction kinetic and mechanism analysis

Ning Liu et al.

Summary: Low levels of PPCPs in the environment have attracted attention as a new class of organic pollutants, and their degradation by optimizing AOPs remains a challenge. The Co sites embedded in carbon nitride catalyst showed high efficiency in removing BPA and other pollutants under visible light irradiation, demonstrating universal applicability and reusability. This work offers potential for environmental purification and effective removal of various pollutants beyond BPA.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Engineering, Environmental

Heterogeneous activation of peroxydisulfate by sulfur-doped g-C3N4 under visible-light irradiation: Implications for the degradation of spiramycin and an assessment of N-nitrosodimethylamine formation potential

Yicheng Dou et al.

Summary: In this study, the removal of spiramycin was successfully enhanced by the PDS/SCN visible-light catalytic system, with significant reduction in NDMA formation potential. The main oxidizers and contributing factors for spiramycin degradation in this system were identified. The removal of spiramycin in the system occurred through three different pathways, leading to a notable decrease in NDMA formation potential.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Article Chemistry, Multidisciplinary

Self-Supporting 3D Carbon Nitride with Tunable n -> pi* Electronic Transition for Enhanced Solar Hydrogen Production

Sufeng An et al.

Summary: Self-supporting 3D carbon nitrides with unique features such as improved charge mobility and controllable n -> pi* electronic transition have been synthesized through a facile stepwise pyrolytic strategy. By optimizing the structure and optical properties, enhanced H-2 evolution rates were achieved, demonstrating the potential for efficient photocatalytic reactions.

ADVANCED MATERIALS (2021)

Article Environmental Sciences

Physiochemical assessment of environmental behaviors of herbicide atrazine in soils associated with its degradation and bioavailability to weeds

Jintong Liu et al.

Summary: Atrazine residue in soil poses a serious environmental risk, with strong migration potential and high bioavailability to weeds. Degradation mainly occurs through abiotic processes, with potential for underground water contamination. Minimal atrazine use is recommended to control pesticide waste and environmental impact.

CHEMOSPHERE (2021)

Article Engineering, Environmental

One-pot thermal polymerization route to prepare N-deficient modified g-C3N4 for the degradation of tetracycline by the synergistic effect of photocatalysis and persulfate-based advanced oxidation process

Haoran Sun et al.

Summary: A nitrogen-deficient g-C3N4 (CNx) photocatalyst was synthesized through thermal polymerization of urea and oxamide for tetracycline degradation under visible light with persulfate activation. The CNx/PS system showed high efficiency in degrading TC, with factors like catalyst and PS dosage, initial TC concentration, and pH affecting the degradation process. LC-MS analysis was used to identify intermediate products, and toxicity of the TC solution was effectively reduced after degradation.

CHEMICAL ENGINEERING JOURNAL (2021)

Article Chemistry, Physical

Experimental and DFT insights into the visible-light driving metal-free C3N5 activated persulfate system for efficient water purification

Junlei Zhang et al.

Summary: In this study, metal-free C3N5 was synthesized and used as an activator for PMS activation, exhibiting excellent degradation performance for EMs and water disinfection under visible light. This research provides a new environmentally-friendly option for efficient water purification through advanced oxidation processes.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Article Chemistry, Physical

Selectively photoelectrocatalytic reduction of oxygen to hydroxyl radical and singlet oxygen: Mechanism and validation in coal wastewater

Zhiyuan Feng et al.

Summary: This study demonstrates the efficient treatment of coal water slurry gasification wastewater using a CuCN/photoelectrochemical system, reducing TOC levels with low energy consumption. The treated wastewater can be utilized for salt recovery and utilization, highlighting the potential of synergistic photo-electro-catalytic effects in wastewater remediation processes, especially for saline coal wastewater.

APPLIED CATALYSIS B-ENVIRONMENTAL (2021)

Review Chemistry, Physical

Density Functional Theory Calculations for Insight into the Heterocatalyst Reactivity and Mechanism in Persulfate-Based Advanced Oxidation Reactions

Panpan Zhang et al.

Summary: This review highlights recent advances in theoretical simulations for persulfate-based advanced oxidation processes, focusing on catalyst properties, persulfate activation mechanism, and degradation mechanism of organic contaminants. The study also discusses descriptors in computational studies and structure-performance relationships within the field. Challenges and future research focuses of DFT simulations in PS-AOPs are proposed, including evaluation of catalyst properties, elucidation of activation mechanisms, and rational design of on-demand catalysts.

ACS CATALYSIS (2021)

Article Chemistry, Multidisciplinary

Synthesis of TiO2-Ag3PO4 photocatalyst material with high adsorption capacity and photocatalytic activity: application in the removal of dyes and pesticides

Emmanuel Nyankson et al.

Summary: The study demonstrated that TiO2-Ag3PO4 composite materials exhibit high photocatalytic activity and strong adsorption capacity in water treatment technologies, effectively removing pollutants from water.

RSC ADVANCES (2021)

Article Environmental Sciences

Photoelectrocatalytic degradation of atrazine by boron-fluorine co-doped TiO2 nanotube arrays

He-xuan Wang et al.

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2019)

Article Environmental Sciences

Mechanism and Kinetic Analysis of Degradation of Atrazine by US/PMS

Yixin Lu et al.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH (2019)

Article Environmental Sciences

Visible light activity of BaFe1-xCuxO3-delta as photocatalyst for atrazine degradation

Tarek S. Jamil et al.

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY (2018)

Article Chemistry, Physical

Meso-g-C3N4/g-C3N4 nanosheets laminated homojunctions as efficient visible-light-driven photocatalysts

Siyu Tan et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2017)

Article Engineering, Environmental

Bromate inhibition by reduced graphene oxide in thermal/PMS process

Xin Huang et al.

WATER RESEARCH (2017)

Article Chemistry, Multidisciplinary

Highly Ordered Nitrogen-Rich Mesoporous Carbon Nitrides and Their Superior Performance for Sensing and Photocatalytic Hydrogen Generation

Gurudas P. Mane et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2017)

Article Chemistry, Physical

Activation of peroxymonosulfate by BiVO4 under visible light for degradation of Rhodamine B

Yang Liu et al.

CHEMICAL PHYSICS LETTERS (2016)

Article Chemistry, Multidisciplinary

Macroscopic 3D Porous Graphitic Carbon Nitride Monolith for Enhanced Photocatalytic Hydrogen Evolution

Qinghua Liang et al.

ADVANCED MATERIALS (2015)

Article Chemistry, Multidisciplinary

A Van Der Waals Homojunction: Ideal p-n Diode Behavior in MoSe2

Youngjo Jin et al.

ADVANCED MATERIALS (2015)