Recent progress in semiconductor/graphene photocatalysts: synthesis, photocatalytic applications, and challenges

RSC Advances, Journal Year: 2022, Volume and Issue: 13(1), P. 421 - 439

Published: Dec. 21, 2022

The presence of an increasing number organic pollutants in water now poses serious risks to both human health and ecological systems. Many these are persistent non-biodegradable. contamination fresh by harmful substances has compelled researchers develop innovative, efficient, cost-effective remediation techniques materials. Thus, photocatalysis long been recognized as a promising approach tackle environmental the energy crisis. However, semiconductor photocatalysts frequently suffer from defects such photo-generated charge carrier recombination, poor visible light response, slow surface reaction kinetics, which can be remedied modifications with appropriate co-catalysts. Therefore, graphene its derivatives have widely used supports for semiconductors due their distinctive optical, physicochemical, electrical features. This critical review addresses current progress design synthesis graphene/semiconductor photocatalysts, well use photocatalytic degradation hydrogen production. Several influencing parameters addressed, including pH, photocatalyst loading, initial pollutant concentration, wavelength, oxidizing species, all could significant impact on rate pollutant's degradation. Furthermore, recyclability catalyst activity mechanisms thoroughly discussed. Numerous case studies systematically presented. Moreover, future prospects major challenges highlighted.

Language: Английский

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Construction of a BaTiO3/tubular g-C3N4 dual piezoelectric photocatalyst with enhanced carrier separation for efficient degradation of tetracycline

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 461, P. 141947 - 141947

Published: Feb. 17, 2023

Language: Английский

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Oxygen Vacancies Modified TiO₂/O‐Terminated Ti₃C₂ Composites: Unravelling the Dual Effects between Oxygen Vacancy and High‐Work‐Function Titanium Carbide

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(41)

Published: Aug. 13, 2023

Abstract The rational design of Ti 3 C 2 T x MXene‐derived TiO ‐based photocatalysts with broad light absorption and efficient charge separation has recently attracted considerable attention for antibiotic degradation. However, the complementary effects each component, especially oxygen vacancies (OVs) high work function O‐terminated (O‐Ti ), in affecting photocatalytic activity remain controversial. In this study, ‐derived /Ti are regulated by alkalization controlled KOH solution calcination different heating atmospheres to reveal contribution OVs, 3+ , carbon species, titanium carbide. Carbon species rich OVs co‐exist /O‐Ti (OV/C‐TT‐1K(N )) which exhibit superior performance tetracycline hydrochloride degradation a kinetic constant 0.0217 min −1 . Combined experimental DFT computational results, broadened visible response desirable redox properties caused dopants, as well decreased Schottky barrier height enhanced electronic conductivity O‐Ti

Language: Английский

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Piezo-photocatalysts in the field of energy and environment: Designs, applications, and prospects

Nano Energy, Journal Year: 2023, Volume and Issue: 112, P. 108508 - 108508

Published: May 6, 2023

Language: Английский

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Multifunctional roles of MoS2 in persulfate-based advanced oxidation processes for eliminating aqueous organic pollutants: A review

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 340, P. 123173 - 123173

Published: Aug. 14, 2023

Language: Английский

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SnFe ₂O ₄/ZnIn ₂S ₄/PVDF piezophotocatalyst with improved photocatalytic hydrogen production by synergetic effects of heterojunction and piezoelectricity

Journal of Advanced Ceramics, Journal Year: 2023, Volume and Issue: 12(9), P. 1685 - 1700

Published: April 24, 2023

The polarized electric field inside piezoelectric materials has been proved to be promising technique boost the photogenerated charge separation. Herein, a novel flexible SnFe₂O₄/ZnIn₂S₄/PVDF (P-SZ) film piezophotocatalyst was successfully synthesized by combining poly vinylidene fluoride (PVDF), an organic material, with SnFe₂O₄/ZnIn₂S₄ (SFO/ZIS) type II heterojunction photocatalyst. hydrogen evolution rate of SFO/ZIS SFO content 5% is about 846.79 μmol h^-1 g^-1, which 3.6 times higher than that pristine ZIS. Further, after being combined PVDF, optimum P-SZ 1652.7 g^-1 in presence ultrasound, exceeds 5%SFO/ZIS approximately factor 2.0. Based on experimental results, mechanism improved photocatalytic performance proposed basis PVDF and formed between ZIS, effectively boosted separation photoinduced charges. This work provides efficient strategy for multi-path collection utilization natural solar vibrational energy enhance photoactivity.

Language: Английский

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S-scheme heterojunction Cu2V2O7/α-Fe2O3 nanosheets with effective photocatalytic activity toward organic pollutant degradation

Nano Energy, Journal Year: 2023, Volume and Issue: 117, P. 108849 - 108849

Published: Sept. 1, 2023

Language: Английский

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Review on spinel ferrites-based materials (MFe2O4) as photo-Fenton catalysts for degradation of organic pollutants

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 318, P. 123971 - 123971

Published: May 2, 2023

Language: Английский

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Improved piezo-photocatalysis for aquatic multi-pollutant removal via BiOBr/BaTiO3 heterojunction construction

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 151002 - 151002

Published: April 4, 2024

Language: Английский

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Facile synthesis of N-doped carbon nanorods for antibiotics degradation via PMS activation: Mechanism insight and biotoxicity assessment

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 340, P. 126849 - 126849

Published: Feb. 20, 2024

Language: Английский

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