Z-Scheme g-C3N4/Fe3O4/Ag3PO4 @Sep magnetic nanocomposites as heterojunction photocatalysts for green malachite degradation and dynamic molecular studies

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2023, Volume and Issue: 671, P. 131509 - 131509

Published: May 5, 2023

Language: Английский

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A Comprehensive Review on the Boosted Effects of Anion Vacancy in the Heterogeneous Photocatalytic Degradation, Part II: Focus on Oxygen Vacancy

ACS Omega, Journal Year: 2024, Volume and Issue: 9(6), P. 6093 - 6127

Published: Feb. 5, 2024

Environmental problems, including the increasingly polluted water and energy crisis, have led to a need propose novel strategies/methodologies contribute sustainable progress enhance human well-being. For these goals, heterogeneous semiconducting-based photocatalysis is introduced as green, eco-friendly, cost-effective, effective strategy. The introduction of anion vacancies in semiconductors has been well-known an strategy for considerably enhancing photocatalytic activity such systems, giving them advantages promoting light harvesting, facilitating photogenerated electron-hole pair separation, optimizing electronic structure, yield reactive radicals. This Review will introduce effects vacancy-dominated photodegradation systems. Then, their mechanism illustrate how vacancy changes pathway degradation efficiency toward pollutants overall performance. Specifically, defect types methods tailoring be briefly illustrated, this part focus on oxygen (OV) its recent advances. challenges development issues engineered defects photocatalysts also discussed practical applications provide promising research direction. Finally, some prospects emerging field proposed suggested. All permission numbers adopted figures from literature are summarized separate file Editor.

Language: Английский

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Hexavalent chromium reduction and Rhodamine B degradation by visible-light-driven photocatalyst of stannum indium sulfide-samarium vanadate

npj Clean Water, Journal Year: 2023, Volume and Issue: 6(1)

Published: April 4, 2023

Abstract In this study, a flower-like SnIn 4 S 8 /SmVO heterostructure was synthesized by applying hydrothermal approach and used as visible-light-driven photocatalyst to remove hexavalent chromium (Cr 6+ ) Rhodamine B (RhB). The process design optimization were carried out response surface methodology (RSM). An artificial neural network (ANN) also determine the relative importance of operational factors. Under RSM-based optimal conditions, Cr RhB removal efficiency reached 90.93 97.57%, respectively. Process modeling ANN revealed pH most influential factor in dye removal. predominant photocatalytic activity attributed its Z-scheme structure, leading significant separation charge carriers conserving redox capacity photogenerated electron-holes. Kinetic studies that could achieve considerable rate constants 0.036 0.080 min −1 RhB, Furthermore, catalyst’s reusability confirmed under conditions.

Language: Английский

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Research progress in photocatalytic activated persulfate degradation of antibiotics by bismuth-based photocatalysts

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 324, P. 124628 - 124628

Published: July 20, 2023

Language: Английский

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Constructing a Z-Scheme Co₃O₄/BiOBr Heterojunction to Enhance Photocatalytic Peroxydisulfate Oxidation of High-Concentration Rhodamine B: Mechanism, Degradation Pathways, and Toxicological Evaluations

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(9), P. 4447 - 4460

Published: Feb. 22, 2024

Photocatalytic coupling technologies have emerged as popular strategies to increase the treatment efficiency of dye-containing wastewater. Herein, Z-scheme Co3O4/BiOBr heterojunction (Z-CBH) was constructed and developed a photocatalytic peroxydisulfate (PDS) activator for degradation high-concentration Rhodamine B (RhB). Multiple testing techniques were employed confirm formation Z-CBHs. When 0.1 g·L–1 Z-CBH20 1.0 mmol·L–1 PDS added simultaneously under simulated sunlight irradiation, RhB could approach 91.3%. Its reaction rate constant (0.01231 min–1) much beyond sum those in Z-CBH20/light system (0.00436 PDS/light (0.0062 min–1). h+, •OH, •O2–, SO4•–, 1O2 detected dominant reactive species degradation. The potential mechanism oxidation proposed. possible intermediates determined by high-performance liquid chromatography-quadrupole time-of-flight mass spectrometry assisted with density functional theory Fukui theory. pathways put forward. toxicological properties its evaluated quantitative structure–activity relationship prediction. This work will not only provide reference developing persulfate activators but also gain an insight into toxicity intermediates.

Language: Английский

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BiVO4 As a Sustainable and Emerging Photocatalyst: Synthesis Methodologies, Engineering Properties, and Its Volatile Organic Compounds Degradation Efficiency

Nanomaterials, Journal Year: 2023, Volume and Issue: 13(9), P. 1528 - 1528

Published: May 1, 2023

Bismuth vanadate (BiVO4) is one of the best bismuth-based semiconducting materials because its narrow band gap energy, good visible light absorption, unique physical and chemical characteristics, non-toxic nature. In addition, BiVO4 with different morphologies has been synthesized exhibited excellent photocatalytic efficiency in degradation various organic pollutants, including volatile compounds (VOCs). Nevertheless, commercial scale utilization significantly limited poor separation (faster recombination rate) transport ability photogenerated electron–hole pairs. So, engineering/modifications are performed to enhance their structural, electronic, morphological properties. Thus, this review article aims provide a critical overview advanced oxidation processes (AOPs), nanomaterials, synthesis methodologies, engineering properties through making binary ternary nanocomposites, coupling metals/non-metals metal nanoparticles development Z-scheme type etc., VOCs degradation. future challenges way forward for improving commercial-scale application BiVO4-based nanomaterials also discussed. we hope that valuable resource designing nanocomposites superior visible-light-driven

Language: Английский

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Preparation of BiVO4/CO32−-Bi2O2CO3 heterojunctions for enhanced photocatalytic activity in the degradation of levofloxacin under visible light

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 965, P. 171471 - 171471

Published: July 20, 2023

Language: Английский

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Congregating Ag into γ-Bi2O3 coupled with CoFe2O4 for enhanced visible light photocatalytic degradation of ciprofloxacin, Cr(VI) reduction and genotoxicity studies

Chemosphere, Journal Year: 2023, Volume and Issue: 342, P. 140181 - 140181

Published: Sept. 14, 2023

Language: Английский

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Pd nanoparticles decorated BiVO4 pine architectures for photocatalytic degradation of sulfamethoxazole

Chemosphere, Journal Year: 2023, Volume and Issue: 321, P. 138118 - 138118

Published: Feb. 10, 2023

Language: Английский

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Optimization and modeling of betamethasone removal from aqueous solutions using a SiO2/g-C3N5@NiFe2O4 nanophotocatalyst by RSM

npj Clean Water, Journal Year: 2024, Volume and Issue: 7(1)

Published: Jan. 6, 2024

Abstract This study presents the preparation of SiO 2 /g-C 3 N 5 @NiFe O 4 nanophotocatalyst for removal betamethasone from aqueous solutions. The was synthesized using solvothermal method, and its structure optical properties were characterized confirmed through XRD, FESEM, EDX, DRS, BET, VSM PL analysis. Photocatalytic optimized a central composite design. band gap pure g-C , NiFe obtained 2.4 eV, 2.7 1.4 respectively Tauc plot. F -value 909.88 Lack Fit 0.41 confirm model is significant. Also, value R = 0.9988 along with adja 09977 demonstrates excellent performance. Maximum efficiency approximately 87.15% under following optimal conditions: dosage 0.005 g/50 mL, concentration 20 mg/L, an irradiation time 40 min visible light. performance closely aligns actual 80.65%. In conclusion, photocatalytic ability

Language: Английский

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