Highly visible active Ag2CrO4/Ag/BiFeO3@RGO nano-junction for photoreduction of CO2 and photocatalytic removal of ciprofloxacin and bromate ions: The triggering effect of Ag and RGO

Kumar, Amit; Sharma, Gaurav; Naushad, Mu.; Ahamad, Tansir; Veses, Renato Cataluña; Stadler, Florian J.

doi:10.1016/j.cej.2019.03.196

Cited by 138 publications

(30 citation statements)

References 65 publications

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“…When other combinations between the three components of the catalyst were considered, the catalytic activity of the catalysts was reported to be in the order RGO/TiO 2 /ZnO > RGO/TiO 2 > TiO 2 /ZnO > TiO 2 > ZnO. Photocatalytic efficiency of Ag 2 CrO 4 /Ag/BiFeO 3 @rGO heterojunction for ciprofloxacin (CIF) degradation under broad light spectrum was reported by Kumar, et al [148]. Apart from the advantages of Z-scheme formation, the reductive and oxidative capabilities of the composite were triggered by the plasmonic Ag 0 electron donation-mediation and the adsorption-electron mediation of reduced graphene oxide.…”

Section: Metal Oxide-based Graphene Composite Photocatalystsmentioning

confidence: 88%

Graphene-Based Composites as Catalysts for the Degradation of Pharmaceuticals

Olatunde

Onwudiwe

2021

IJERPH

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The incessant release of pharmaceuticals into the aquatic environment continues to be a subject of increasing concern. This is because of the growing demand for potable water sources and the potential health hazards which these pollutants pose to aquatic animals and humans. The inability of conventional water treatment systems to remove these compounds creates the need for new treatment systems in order to deal with these class of compounds. This review focuses on advanced oxidation processes that employ graphene-based composites as catalysts for the degradation of pharmaceuticals. These composites have been identified to possess enhanced catalytic activity due to increased surface area and reduced charge carrier recombination. The techniques employed in synthesizing these composites have been explored and five different advanced oxidation processes—direct degradation process, chemical oxidation process, photocatalysis, electrocatalyis processes and sonocatalytic/sono-photocatalytic processes—have been studied in terms of their enhanced catalytic activity. Finally, a comparative analysis of the processes that employ graphene-based composites was done in terms of process efficiency, reaction rate, mineralization efficiency and time required to achieve 90% degradation.

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Section: Metal Oxide-based Graphene Composite Photocatalystsmentioning

confidence: 88%

Graphene-Based Composites as Catalysts for the Degradation of Pharmaceuticals

Olatunde

Onwudiwe

2021

IJERPH

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“…CIP is basically an amphoteric drug with two pka values (pka1 = 6.1 and pka2 = 8.7). [50] Results have shown the low adsorption rate in acidic medium due to repulsion between the positively charged Ga-cl-PAM@C 3 N 4 nanocomposite hydrogel surface and protonated CIF molecules. At working pH, CIP showed maximum electrostatic interactions toward Ga-cl-PAM@C 3 N 4 nanocomposite hydrogel due to their opposite charges that resulted into high adsorption rate.…”

Section: Optimization Of Adsorption Parametersmentioning

confidence: 91%

Gum Acacia‐cl‐poly(acrylamide)@carbon nitride Nanocomposite Hydrogel for Adsorption of Ciprofloxacin and its Sustained Release in Artificial Ocular Solution

Sharma

Thakur

Kumar

et al. 2020

Macro Materials & Eng

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In the present work, a nanocomposite hydrogel is designed consisting of gum acacia, poly(acrylamide) and carbon nitride by facile microwave approach. This nanocomposite hydrogel is sensitive to environmental stimuli which is essential for its application in environmental remediation and as a drug delivery system. The effects of carbon nitride percentage and microwave Watt variation on swelling capacity of gum acacia‐cl‐poly(acrylamide)@carbon nitride (Ga‐cl‐PAM@C3N4) nanocomposite hydrogel are analyzed. The structural characterizations are considered by numerous techniques such as FTIR (Fourier transform infra‐red spectroscopy), X‐ray diffraction, transmission electron microscopy, scanning electron microscopy, and elemental mapping. Batch experiment is performed for remediation of ciprofloxacin (CIP) drug from water. Various parameters such as effect of ciprofloxacin doses, Ga‐cl‐PAM@C3N4 nanocomposite hydrogel dosage, pH, time and temperature for adsorption of CIP on gum acacia‐cl‐poly(acrylamide)@carbon nitride nanocomposite hydrogel is examined. Maximum adsorption capacity of Ga‐cl‐PAM@C3N4 nanocomposite hydrogel observed is 169.49 mg g−1 at pH 6.4. The drug loading and drug release capacity of Ga‐cl‐PAM@C3N4 nanocomposite hydrogel is investigated for ciprofloxacin. Drug release is monitored in artificial ocular solution (pH 8), saline (pH 5.5), acetate buffer (pH 2.2), and distilled water. Maximum drug release is observed in artificial ocular solution.

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“…Compared to the single Ag2CrO4 and BiFeO3, Ag2CrO4/BiFeO3 witnessed an improvement in the yield of both CO and CH4 (Fig. 11b,c), which was further enhanced with the help of Ag and RGO 203 . As is shown in Fig.…”

Section: Photocatalytic Applications Of Perovskite Oxide 51 Co2 Redumentioning

confidence: 99%

“…A Z-scheme Ag2CrO4/Ag/BiFeO3@RGO composite was proposed to enhance the photocatalytic ability as shown in Fig. 11a 203 . The protection of high potential CB and VB from BFO and ACO, respectively, by Ag through electron transfer and donation by surface plasmon resonance under visible light leads to facilitated CH4 production.…”

Section: Photocatalytic Applications Of Perovskite Oxide 51 Co2 Redumentioning

confidence: 99%

Recent Progress of Perovskite Oxide in Emerging Photocatalysis Landscape: Water Splitting, CO<sub>2</sub> Reduction, and N<sub>2</sub> Fixation

王则鉴¹,

洪佳佳²,

Sue-Faye³

et al. 2020

Acta Physico Chimica Sinica

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Highly visible active Ag2CrO4/Ag/BiFeO3@RGO nano-junction for photoreduction of CO2 and photocatalytic removal of ciprofloxacin and bromate ions: The triggering effect of Ag and RGO

Cited by 138 publications

References 65 publications

Graphene-Based Composites as Catalysts for the Degradation of Pharmaceuticals

Graphene-Based Composites as Catalysts for the Degradation of Pharmaceuticals

Gum Acacia‐cl‐poly(acrylamide)@carbon nitride Nanocomposite Hydrogel for Adsorption of Ciprofloxacin and its Sustained Release in Artificial Ocular Solution

Recent Progress of Perovskite Oxide in Emerging Photocatalysis Landscape: Water Splitting, CO<sub>2</sub> Reduction, and N<sub>2</sub> Fixation

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