CuO/g-C3N4 2D/2D heterojunction photocatalysts as efficient peroxymonosulfate activators under visible light for oxytetracycline degradation: Characterization, efficiency and mechanism

Wang, Min; Jin, Chongyue; Kang, Jin Kyu; Liu, Jiayun; Tang, Yiwu; Li, Zhilin; Li, Siyan

doi:10.1016/j.cej.2020.128118

Cited by 107 publications

(25 citation statements)

References 57 publications

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“…2D/2D heterostructures possess a large contact interface and short charge transport distance, benefiting charge migration and separation. [182][183][184] A reduced graphene oxide (rGO)/CN hybrid is a typical 2D/2D nanomaterial, in which the π-conjugated structure of rGO resembles the CN's layer stacking. [185] The 2D/2D rGO/CN heterostructure could be easily formed through the electrostatic adsorption of the π-π stacking NSs.…”

Section: D Nanomaterialsmentioning

confidence: 99%

Functional Carbon Nitride Materials in Photo‐Fenton‐Like Catalysis for Environmental Remediation

Lin

Tian

Guan

et al. 2022

Adv Funct Materials

124

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Among various advanced oxidation processes, coupled photocatalysis and heterogeneous Fenton-like catalysis (known as photo-Fenton-like catalysis) to generate highly reactive species for environmental remediation has attracted wide interests. As an emerging metal-free photocatalyst, graphitic carbon nitride (g-C 3 N 4 , CN) has been recently recognized as a promising candidate to catalyze robustly heterogeneous photo-Fenton-like reactions for wastewater remediation. This review summarizes recent progress in fabricating various types of CN-based catalysts for the photo-Fenton-like reaction process. Innovative engineering strategies on the CN matrix are outlined, ranging from morphology control, defect engineering, nonmetal atom doping, organic molecule doping to modification by metal-containing species. The photo-Fenton-like catalytic activities of CN loaded with auxiliary sub-nanoscale (e.g., quantum dots, organometallic molecules, metal cations, and single atom metals) and nanoscale metal-based materials are critically evaluated. Hybridization of CN with bandgap-matching semiconductors for the construction of type-II and Z-scheme heterojunctions are also examined. The critical factors (e.g., morphology, dimensionality, light absorption, charge excitation/migration, catalytic sites, H 2 O 2 generation and activation) that determine the performance of CN-based photocatalysts in Fenton-like catalysis are systematically discussed. After examining the structure-activity relationship, research perspectives are proposed for further development of CN-based photocatalysts toward more efficient photo-Fenton-like reactions and their application in practical water treatment.

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Section: D Nanomaterialsmentioning

confidence: 99%

Functional Carbon Nitride Materials in Photo‐Fenton‐Like Catalysis for Environmental Remediation

Lin

Tian

Guan

et al. 2022

Adv Funct Materials

124

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“…Carbon nitride (C 3 N 4 ) is one of the most widely studied photocatalysts, which has good tolerance to the surrounding environment even under strong acid or alkaline condition, and can be easily prepared in an environmentally friendly manner. Pristine C 3 N 4 can be prepared via polymerization of nontoxic or low toxic nitrogen-rich precursors such as cyanamide, 46 dicyandiamide, 47 melamine, 48 and urea. 49 The polymerization methods can be thermal polymerization, 50–53 microwave-assisted condensation, 54 and ultraviolet irradiation driven synthesis.…”

Section: Green Synthesis Strategies For 2d Nanosheetsmentioning

confidence: 99%

Synthesis of two-dimensional ultrathin photocatalytic materials towards a more sustainable environment

et al. 2022

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“…In recent years, many researches have focused on the photoinduced amplification technology of CL, which converted O 2 into ROS under luminous energy like solar energy. − Notably, O 2 is an abundantly available, nontoxic, and promising ROS source. This method could be used for the online detection of chemical oxygen demand, photoelectrochemical immunoassay, and ROS-responsive payload release. − However, due to the limitations of strong excitation sources and harsh experimental conditions in these systems, the inchoate loss of ROS leads to weak CL emission with the disadvantages of instability and low repeatability.…”

Section: Introductionmentioning

confidence: 99%

K⁺ Ion-Doped Mixed Carbon Nitride: A Daylight-Driven Photocatalyst and Luminophore for Enhanced Chemiluminescence

Yang

Song

et al. 2022

ACS Appl. Mater. Interfaces

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Photocatalytic production of reactive oxygen species from O 2 at the interface of the photocatalyst is significant to convert luminous energy like daylight into chemical energy and could be momentous for a reactive oxygen species-based chemiluminescence system. Herein, we synthesized a novel K + ion-doped tri-s-triazine/ triazine mixed carbon nitride (MCN), in which K + ions were intercalated into the layers in a bridging manner. After a mild daylight treatment for 30 min, the MCN suspension could produce long-lifetime reactive oxygen species and further directly produce intense and stable chemiluminescence emission in the presence of luminol. In particular, the chemiluminescence intensity was 780 times that of H 2 O 2 −luminol, and MCN could be recycled several times in the chemiluminescence system. The mechanism results revealed a large number of reactive oxygen species that were generated from O 2 on the surface of MCN through a temperate photocatalytic process. In the theoretical calculation, the charge density of N interacting with K + ions was significantly more negative than that at the corresponding position in graphitic carbon nitride, which was beneficial to the adsorption and activation of oxygen, and the narrower band gap suggested that the doping of K + ions was conducive to the intramolecular charge transfer interaction. Then, the long-lifetime reactive oxygen species triggered the conversion of luminol into an excited-state intermediate, which further transferred energy to MCN, producing strong chemiluminescence emission. The K + ion-doped MCN might conduct as an efficient photocatalyst for reactive oxygen species generation, recyclable catalysts, and luminophores in the photoinduced chemiluminescence system.

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CuO/g-C3N4 2D/2D heterojunction photocatalysts as efficient peroxymonosulfate activators under visible light for oxytetracycline degradation: Characterization, efficiency and mechanism

Cited by 107 publications

References 57 publications

Functional Carbon Nitride Materials in Photo‐Fenton‐Like Catalysis for Environmental Remediation

Functional Carbon Nitride Materials in Photo‐Fenton‐Like Catalysis for Environmental Remediation

Synthesis of two-dimensional ultrathin photocatalytic materials towards a more sustainable environment

K⁺ Ion-Doped Mixed Carbon Nitride: A Daylight-Driven Photocatalyst and Luminophore for Enhanced Chemiluminescence

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CuO/g-C3N4 2D/2D heterojunction photocatalysts as efficient peroxymonosulfate activators under visible light for oxytetracycline degradation: Characterization, efficiency and mechanism

Cited by 107 publications

References 57 publications

Functional Carbon Nitride Materials in Photo‐Fenton‐Like Catalysis for Environmental Remediation

Functional Carbon Nitride Materials in Photo‐Fenton‐Like Catalysis for Environmental Remediation

Synthesis of two-dimensional ultrathin photocatalytic materials towards a more sustainable environment

K+ Ion-Doped Mixed Carbon Nitride: A Daylight-Driven Photocatalyst and Luminophore for Enhanced Chemiluminescence

Contact Info

Product

Resources

About

K⁺ Ion-Doped Mixed Carbon Nitride: A Daylight-Driven Photocatalyst and Luminophore for Enhanced Chemiluminescence