Highly efficient and stable Fe2O3/g-C3N4/GO nanocomposite with Z-scheme electron transfer pathway: Role of photocatalytic activity and adsorption isotherm of organic pollutants in wastewater

Danish, Mohtaram; Athar, Mohammad; Ahmad, Iftekhar; Warshagha, Murad Z. A.; Rasool, Ziyaur; Muneer, M.

doi:10.1016/j.apsusc.2022.154604

Cited by 46 publications

(20 citation statements)

References 103 publications

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“…The separation efficiency and charge transfer resistance of the synthesized photocatalysts were measured using PL spectral analysis and electrochemical impedance spectroscopy (EIS), and the results are shown in Figure a,b. The recombination rate of photogenerated electron–hole pair profoundly impacts the efficiency of semiconductor materials as photocatalysts. , It is particularly known that a rapid rate of photogenerated charge carriers recombination results in a strong photoluminescence signal Figure a shows the photoluminescence signal for pure and binary composites at an excitation wavelength of 330 nm.…”

Section: Resultsmentioning

confidence: 99%

Novel Type-II Heterojunction Binary Composite (CdS/AgI) with Outstanding Visible Light-Driven Photocatalytic Performances toward Methyl Orange and Tetracycline Hydrochloride

et al. 2023

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In this study, an effective type-II heterojunction CdS/AgI binary composite was constructed by an in situ precipitation approach. To validate the successful formation of heterojunction between AgI and CdS photocatalysts, the synthesized binary composites were characterized by various analytical techniques. UV−vis diffuse-reflectance spectroscopy (UV−vis DRS) revealed that heterojunction formation led to a red shift in the absorbance spectra of the CdS/AgI binary composite. The optimized 20AgI/CdS binary composite showed a least intense photoluminescence (PL) peak indicating highly improved charge carrier (e − /h + pairs) separation efficiency. The photocatalytic efficiency of the synthesized materials was assessed based on the degradation of methyl orange (MO) and tetracycline hydrochloride (TCH) in the presence of visible light. Compared to bare photocatalysts and other binary composites, the 20AgI/CdS binary composite showed the highest photocatalytic degradation performances. Additionally, the trapping studies showed that superoxide radical anion (O 2•− ) was the most dominant active species involved in photodegradation processes. Based on the results of active species trapping studies, a mechanism was proposed to describe the formation of type-II heterojunctions for CdS/AgI binary composite. Overall, the synthesized binary composite has tremendous promise for environmental remediation due to its straightforward synthesis approach and excellent photocatalytic efficacy.

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Section: Resultsmentioning

confidence: 99%

Novel Type-II Heterojunction Binary Composite (CdS/AgI) with Outstanding Visible Light-Driven Photocatalytic Performances toward Methyl Orange and Tetracycline Hydrochloride

et al. 2023

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“…The Scherrer formula was utilized to determine the crystallite size of the prepared materials using XRD data and eqn (1).…”

Section: Papermentioning

confidence: 99%

“…A large number of toxic pollutants are introduced into the water system through different sources, like industrial, pharmaceutical processes, agricultural, and household runoff. [1][2][3][4] These accumulated toxins build up in the aquatic organisms and ultimately make their way into our bodies through the food chain. 5 The detoxification of this contaminated water is of great concern to society and regulating authorities.…”

Section: Introductionmentioning

confidence: 99%

A comparative study on the photo-removal of a few selected priority organic pollutants in aqueous suspension using vanadium-doped-ZnO/MWCNT

Danish,

Rasool,

Iqbal

et al. 2023

Mater. Adv.

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“…It is a nontoxic metal-free semiconductor material with a polymeric chain that contains solely carbon, nitrogen, and hydrogen atoms. 26,27 We have modified g-C 3 N 4 via doping with a phenyl group to synthesize a phenyl-doped graphitic carbon nitride material (Ph-gC 3 N 4 ). 28 The appropriate band gap and polymeric properties of Ph-gC 3 N 4 make it possible to create a hybrid material with low conduction band inorganic semiconductor materials.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Direct Z-Scheme CoNiWO₄/Ph-gC₃N₄ Heterocomposites: Enhanced Photodegradation of Bisphenol A and Anticancer Activity

Athar,

Rasool,

Muneer

et al. 2023

ACS Omega

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Photocatalysis is realized by the design of a visible-light-active catalyst with robust redox capacity and broad absorption. In this study, a series of novel Z-scheme CoNiWO4/Ph-gC3N4 photocatalysts are synthesized to improve their redox property and photocatalytic activity toward broad visible light absorption. An intimate stable heterojunction is made between cobalt–nickel tungstate (CoNiWO4) and phenyl-doped graphitic carbon nitride (Ph-gC3N4), and its physicochemical properties are studied. The bifunctional properties of all of the synthesized materials were assessed by studying the decomposition of bisphenol A (BPA) and methyl orange (MO) dye as model pollutants, followed by an evaluation of their anticancer activity on human lung cancer cell lines. The photocatalyst with 20 wt % CoNiWO4 heterocomposite showed an enhanced response toward the removal of cancerous cells. The synthesized pristine CoNiWO4 and Ph-gC3N4 exhibit well-matched band structures and, hence, make it easier to create a Z-scheme heterocomposite. This may increase the lifetime of photoinduced charge carriers with a high redox power, thereby improving their photocatalytic and anticancer activity. An extensive analysis of the mechanism demonstrates that hydroxyl radicals (•OH) and superoxide radical anions (•O2 –) are responsible for the degradation of organic compounds via Z-scheme charge transfer approach. These findings point toward a new route for creating effective Co–Ni tungstate-based direct Z-scheme photocatalysts for various redox processes, particularly the mineralization of resistant organic molecules.

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Highly efficient and stable Fe2O3/g-C3N4/GO nanocomposite with Z-scheme electron transfer pathway: Role of photocatalytic activity and adsorption isotherm of organic pollutants in wastewater

Cited by 46 publications

References 103 publications

Novel Type-II Heterojunction Binary Composite (CdS/AgI) with Outstanding Visible Light-Driven Photocatalytic Performances toward Methyl Orange and Tetracycline Hydrochloride

Novel Type-II Heterojunction Binary Composite (CdS/AgI) with Outstanding Visible Light-Driven Photocatalytic Performances toward Methyl Orange and Tetracycline Hydrochloride

A comparative study on the photo-removal of a few selected priority organic pollutants in aqueous suspension using vanadium-doped-ZnO/MWCNT

Fabrication of Direct Z-Scheme CoNiWO₄/Ph-gC₃N₄ Heterocomposites: Enhanced Photodegradation of Bisphenol A and Anticancer Activity

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Highly efficient and stable Fe2O3/g-C3N4/GO nanocomposite with Z-scheme electron transfer pathway: Role of photocatalytic activity and adsorption isotherm of organic pollutants in wastewater

Cited by 46 publications

References 103 publications

Novel Type-II Heterojunction Binary Composite (CdS/AgI) with Outstanding Visible Light-Driven Photocatalytic Performances toward Methyl Orange and Tetracycline Hydrochloride

Novel Type-II Heterojunction Binary Composite (CdS/AgI) with Outstanding Visible Light-Driven Photocatalytic Performances toward Methyl Orange and Tetracycline Hydrochloride

A comparative study on the photo-removal of a few selected priority organic pollutants in aqueous suspension using vanadium-doped-ZnO/MWCNT

Fabrication of Direct Z-Scheme CoNiWO4/Ph-gC3N4 Heterocomposites: Enhanced Photodegradation of Bisphenol A and Anticancer Activity

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Fabrication of Direct Z-Scheme CoNiWO₄/Ph-gC₃N₄ Heterocomposites: Enhanced Photodegradation of Bisphenol A and Anticancer Activity