Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies

Liu, Meijun; Zhang, Depeng; Han, Jinglong; Liu, Chengbin; Ding, Yangcheng; Wang, Zhigang; Wang, Aijie

doi:10.1016/j.cej.2019.123017

Cited by 98 publications

(25 citation statements)

References 61 publications

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“…[61,62] High-dimensional porous structure engineering is a valid approach for morphology control of CN, by contributing to an increased SSA, facilitating light absorption and creating defects to benefit the migration of photogenerated carriers. [65,69,70] The porosity, morphology, structure, and SSA of CN can be facilely tuned using appropriate templates. Among them, silica hard templates were commonly used to control the structure and geometry of CN at nano-and micro-scales, constructing hierarchical pore architectures.…”

Section: Morphology Engineeringmentioning

confidence: 99%

Section: Defect Engineeringmentioning

confidence: 99%

“…c) SDZ photodegradation performance (inset:first-order kinetics). Reproduced with permission [65]. Copyright 2020, Elsevier B.V. TEM images of d) CN-M and e) CN-T. f) AMX degradation under white LED lamp irradiation.…”

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confidence: 99%

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

Lin

Tian

Guan

et al. 2022

Adv Funct Materials

131

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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: Morphology Engineeringmentioning

confidence: 99%

Section: Defect Engineeringmentioning

confidence: 99%

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

Lin

Tian

Guan

et al. 2022

Adv Funct Materials

131

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“…•− in the bulk. Liu et al demonstrated the degradation of sulfadiazine, a sulfonamide widely used as antibiotic in veterinary medicine, using a catalyst consisting of carbon nitride nanosheets with carbon vacancies (Cv-CNNs) synthesized by mixing pure carbon nitride nanosheets (CNNs) with NH 4 Cl and a subsequent thermal treatment at 550 • C for 2 h [87]. The fabricated catalyst exhibited a thin few-layered sheet structure with in-plane pores of 5-7 nm.…”

Section: Graphitic Carbon Nitride-based Materialsmentioning

confidence: 99%

Two-Dimensional Nanomaterials for the Removal of Pharmaceuticals from Wastewater: A Critical Review

2021

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The removal of pharmaceuticals from wastewater is critical due to their considerable risk on ecosystems and human health. Additionally, they are resistant to conventional chemical and biological remediation methods. Two-dimensional nanomaterials are a promising approach to face this challenge due to their combination of high surface areas, high electrical conductivities, and partially optical transparency. This review discusses the state-of-the-art concerning their use as adsorbents, oxidation catalysts or photocatalysts, and electrochemical catalysts for water treatment purposes. The bibliographic search bases upon academic databases including articles published until August 2021. Regarding adsorption, high removal capacities (>200 mg g−1) and short equilibrium times (<30 min) are reported for molybdenum disulfide, metal-organic frameworks, MXenes, and graphene oxide/magnetite nanocomposites, attributed to a strong adsorbate-adsorbent chemical interaction. Concerning photocatalysis, MXenes and carbon nitride heterostructures show enhanced charge carriers separation, favoring the generation of reactive oxygen species to degrade most pharmaceuticals. Peroxymonosulfate activation via pure or photo-assisted catalytic oxidation is promising to completely degrade many compounds in less than 30 min. Future work should be focused on the exploration of greener synthesis methods, regeneration, and recycling at the end-of-life of two-dimensional materials towards their successful large-scale production and application.

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“…In the treatment of water environment pollution, the adsorption performance and visible light response ability of photocatalytic materials are two important factors that determine whether the photocatalytic technology can be effectively promoted [ 22 , 23 ]. The high-efficiency adsorption and enrichment ability of the material reduce the concentration of pollutants in water and provide a high-concentration contact environment that is conducive to the photocatalytic reaction for the material [ 24 , 25 ]. The melting characteristics of B 2 O 3 -modified g-C 3 N 4 are effective for improving its specific surface area and adsorption performance, but its response to visible light is limited, which affects the visible light photocatalytic activity [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation of High-Porosity B-TiO2/C3N4 Composite Materials: Adsorption–Degradation Capacity and Photo-Regeneration Properties

Guo

Rao

Shi

2022

IJERPH

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Adsorption can quickly remove pollutants in water, while photocatalysis can effectively decompose organic matter. B-TiO2/g-C3N4 ternary composite photocatalytic materials were prepared by molten method, and their adsorption–degradation capability under visible light conditions was discussed. The morphology of the B-TiO2/g-C3N4 materials was inspected by SEM, TEM, BET, and EDS, and the results showed that close interfacial connections between TiO2 and g-C3N4, which are favorable for charge transfer between these two semiconductors, formed heterojunctions with suitable band structure which was contributed by the molten B2O3. Meanwhile, the molten B2O3 effectively increased the specific surface area of TiO2/C3N4 materials, thereby increasing the active sites and reducing the recombination of photogenerated electron–hole pairs and improving the photocatalytic degradation abilities of TiO2 and g-C3N4. Elsewhere, the crystal structure analysis (XRD, XPS, FTIR) results indicated that the polar -B=O bond formed a new structure with TiO2 and g-C3N4, which is not only beneficial for inhibiting the recombination of electron holes but also improving the photocatalytic activity. By removal experiment, the adsorption and degradation performances of B-TiO2/g-C3N4 composite material were found to be 8.5 times and 3.4 times higher than that of g-C3N4. Above all, this study prepared a material for removing water pollutants with high efficiency and provides theoretical support and experimental basis for the research on the synergistic removal of pollutants by adsorption and photocatalysis.

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Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies

Cited by 98 publications

References 61 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

Two-Dimensional Nanomaterials for the Removal of Pharmaceuticals from Wastewater: A Critical Review

Preparation of High-Porosity B-TiO2/C3N4 Composite Materials: Adsorption–Degradation Capacity and Photo-Regeneration Properties

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