Chemical oxidants (H2O2 and persulfate) activated photo-Fenton like degradation reaction using sol-gel derived g-C3N4/ZnCo2O4 nanocomposite

Palanivel, Baskaran; Hossain, Md. Shahadat; Reddy, I. Neelakanta; E, Meher Abhinav; Al‐Enizi, Abdullah M.; Ubaidullah, Mohd; Macadangdang, Romulo R.; Shim, Jaesool

doi:10.1016/j.diamond.2022.109413

Cited by 14 publications

(4 citation statements)

References 19 publications

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“…Graphite carbon nitride (g‐C 3 N 4 ) is a visible light‐driven nonmetallic material with excellent chemical and thermal stability that can be prepared by a simple pyrolysis method with low cost and easily controlled structure and performance [9–11] . Using g‐C 3 N 4 as the PS/PMS heterogeneous activator can effectively avoid the above problems [12,13] …”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11] Using g-C 3 N 4 as the PS/PMS heterogeneous activator can effectively avoid the above problems. [12,13] g-C 3 N 4 prepared by direct thermal polycondensation of nitrogen-containing precursors generally presents bulk particles with a small specific surface area and low photocarrier separation efficiency, [14,15] resulting in a poor activation effect on PMS. Semiconductor materials can effectively improve the efficiency of charge separation and transmission by constructing an internal electric field in the heterojunction.…”

Section: Introductionmentioning

confidence: 99%

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Z‐Scheme TiO₂/g‐C₃N₄ Activation of Peroxymonosulfate to Remove Organic Pollutants: Properties and Mechanism

et al. 2023

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TiO2/g‐C3N4 hybrids (TCNs) were constructed by an ammonium salt‐assisted hydrothermal‐high temperature calcination method and used to activate peroxymonosulfate (PMS) to degrade multiple simulated pollutants. The Z‐scheme heterojunction between TiO2 and g‐C3N4 can effectively promote the separation of electron‐hole pairs and improve the photocatalytic activation effect of TCN. The degradation efficiency of RhB in the TCN1/PMS system was 92.3 %, which was only 59.8 % and 63.2 % in g‐C3N4 /PMS the g‐C3 N4/PMS system and TiO2/PMS system, respectively, after 60 min of reaction under sunlight. The TCN1‐4 sample prepared by adding (NH4)2SO4 into the precursor of TCN1 has a higher specific surface area (116.44 m2/g), which provides a better photocatalytic activation effect on PMS: the degradation efficiency of RhB in the TCN1‐4/PMS system can reach 93.9 % after 30 min, which was similar to that of the TCN1/PMS system after 60 min (92.3 %), and the reaction efficiency was doubled. Radical quenching experiments showed that free radicals (⋅OH, SO4⋅−, ⋅O2−), nonradicals (1O2) and h+ existed in the TCN1‐4/PMS reaction system.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Z‐Scheme TiO₂/g‐C₃N₄ Activation of Peroxymonosulfate to Remove Organic Pollutants: Properties and Mechanism

et al. 2023

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“…Since azo dyes do not stick to the cloth during the dyeing process, 15 to 50 percent of them are washed away with the wastewater. This wastewater is employed in irrigation procedures even though it is not beneficial for crop germination or growth [5][6][7]. Textile dyes also cause mutations and generate cancer-causing agents [8].…”

Section: Introductionmentioning

confidence: 99%

Construction of Te-ZnO@S-g-C₃N₄ Heterojunction Nanocomposites for the Efficient Removal of Methylene Blue, Antifungal Activity, and Adsorption of Cr(VI) Ion

Aroosh

Javed

Hussain

et al. 2023

Adsorption Science & Technology

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Heterojunctions have proven to be effective catalysts for removing organic pollutants and heavy metals from wastewater. The following study is also about the formation of 2D heterojunction tellurium-doped zinc oxide composite with sulfur-doped graphitic carbon nitride (Te-ZnO@S-g-C3N4) by adopting a low-cost, simple, and ecofriendly coprecipitation technique. Thiourea was calcined to prepare S-g-C3N4 using the thermal degradation method. The characterization of synthesized photocatalysts was carried out by using SEM-EDX, FTIR, and XRD. The results obtained showed that the incorporation of tellurium caused an alteration in the wurtzite structure of ZnO. SEM-EDX analysis validated the purity of the synthesized samples due to the absence of any additional peaks. The decrease in the bandgap was also noted by the formation of composites. Using methylene blue as a reference dye, the UV-vis spectrophotometer was utilized to calculate the absorbance for photocatalytic degradation behavior. As a result of tellurium doping into the ZnO lattice, photocatalytic oxidation/reduction was improved, according to the results. 3Te-ZnO NPs showed the best degradation rate among dopant series, while an excellent overall degradation rate was noted by fabricated composite 3Te-ZnO@40S-g-C3N4. The best doped ZnO and composites were also used as sorbents for the abstraction of heavy metal (Cr(VI)) from water via adsorption. A definite rise in the removal efficiency percentage of chromium ions was observed by using these sorbents. The overall photo degradation rate and adsorption behavior noted were in ZnO<Te-ZnO<Te-ZnO@S-g-C3N4 order. When compared to ZnO, Te-ZnO, SCN, and Te-ZnO@40SCN, the 3Te-ZnO@40SCN NCs have outstanding antifungal potential. The improved dispersibility and interaction of 3Te-ZnO@40SCN with membrane and intracellular proteins of fungi may be the cause of the greater effect of Te-ZnO@40SCN.

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“…The crystal structure, crystallite size, surface morphology, optical absorption, band gap, electrical properties, and antibacterial ability are studied. The sol-gel method has the advantages of precise control of chemical composition, good coating characteristics, and low manufacturing cost, [13][14][15][16][17] so this study uses the sol-gel method to prepare extrinsic doped ZnCo 2 O 4 thin films. In addition, this study also evaluated the unique antibacterial ability of Ca-doped ZnCo 2 O 4 to explore the potential of practical application.…”

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confidence: 99%

Material and Antibacterial Properties of Spinel-Structure Ca-Doped ZnCo₂O₄ Thin Films

Hwang,

Lin,

Kaneko

et al. 2024

ECS J. Solid State Sci. Technol.

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In the preparation of Zn(Co1−xCax)2O4 thin films with doping content ratio Cax = 0.00–0.20, analysis shows that no impurity phase is formed in spinel-structure thin films, while doping calcium reduces the grain size of the thin films and the planarization of the surface microstructure. Increasing the doping content ratio of calcium will reduce the ability of the film to absorb blue and ultraviolet light, and reduce the characteristic absorption of ZnCo2O4. The energy gap of Zn(Co1−xCax)2O4 film increases from 2.46 eV at Cax = 0.00 to 2.51 eV at Cax = 0.15. Moreover, doping Ca+2 to replace Co+3 increases the conductivity and carrier concentration, for which the optimal doping ratio is Cax = 0.07. The film resistivity decreases from 270.5 Ω-cm (undoped) to 15.4 Ω-cm (Cax = 0.07) and the carrier concentration increases from 2.54×10e15 (undoped) to 6.25×10e17 cm−3 (Cax = 0.07). Under UV light irradiation and in an environment without any light source, the film exhibits anti–E. coli resistance as high as 99.94% and 99.99%. Thus, P-type Zn(Co1−xCax)2O4 films can be used for antibacterial and electronic components.

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Chemical oxidants (H2O2 and persulfate) activated photo-Fenton like degradation reaction using sol-gel derived g-C3N4/ZnCo2O4 nanocomposite

Cited by 14 publications

References 19 publications

Z‐Scheme TiO₂/g‐C₃N₄ Activation of Peroxymonosulfate to Remove Organic Pollutants: Properties and Mechanism

Z‐Scheme TiO₂/g‐C₃N₄ Activation of Peroxymonosulfate to Remove Organic Pollutants: Properties and Mechanism

Construction of Te-ZnO@S-g-C₃N₄ Heterojunction Nanocomposites for the Efficient Removal of Methylene Blue, Antifungal Activity, and Adsorption of Cr(VI) Ion

Material and Antibacterial Properties of Spinel-Structure Ca-Doped ZnCo₂O₄ Thin Films

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Chemical oxidants (H2O2 and persulfate) activated photo-Fenton like degradation reaction using sol-gel derived g-C3N4/ZnCo2O4 nanocomposite

Cited by 14 publications

References 19 publications

Z‐Scheme TiO2/g‐C3N4 Activation of Peroxymonosulfate to Remove Organic Pollutants: Properties and Mechanism

Z‐Scheme TiO2/g‐C3N4 Activation of Peroxymonosulfate to Remove Organic Pollutants: Properties and Mechanism

Construction of Te-ZnO@S-g-C3N4 Heterojunction Nanocomposites for the Efficient Removal of Methylene Blue, Antifungal Activity, and Adsorption of Cr(VI) Ion

Material and Antibacterial Properties of Spinel-Structure Ca-Doped ZnCo2O4 Thin Films

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Z‐Scheme TiO₂/g‐C₃N₄ Activation of Peroxymonosulfate to Remove Organic Pollutants: Properties and Mechanism

Z‐Scheme TiO₂/g‐C₃N₄ Activation of Peroxymonosulfate to Remove Organic Pollutants: Properties and Mechanism

Construction of Te-ZnO@S-g-C₃N₄ Heterojunction Nanocomposites for the Efficient Removal of Methylene Blue, Antifungal Activity, and Adsorption of Cr(VI) Ion

Material and Antibacterial Properties of Spinel-Structure Ca-Doped ZnCo₂O₄ Thin Films