Insights into the enhanced photocatalytic and antioxidant properties of novel biogenically synthesised β-In<sub>2</sub>S<sub>3</sub> quantum dots

Mishra, Soumya Ranjan; Gadore, Vishal; Ghotekar, Suresh; Ahmaruzzaman, Md.

doi:10.1080/03067319.2023.2186228

Cited by 16 publications

(2 citation statements)

References 68 publications

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“…The average crystallite size was calculated using the Debye-Scherer formula (eq ). D = k λ β cos 0.25em θ …”

Section: Methodsmentioning

confidence: 99%

Insights into O₂ Activation via Mn^IIIOOH Species on Mn-Rich Biochar

Fang,

Ying,

Niu

et al. 2023

ACS Catal.

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Although metal-rich biochar (M-BC) is widely used in soil remediation and pollution control, the activation mechanism of molecular oxygen (O2) by M-BC still needs to be clarified due to the low metal loading. In this study, we enhanced the manganese content of low-temperature manganese-rich biochar (Mn-BC) by treating it with hydrogen peroxide (H2O2), resulting in the formation of MnBC-Hx (where x represents the volume of H2O2 used in mL). MnBC-H5 was particularly effective in activating O2, leading to the successful degradation of phenol and dyes. Characterizations showed that the MnII in the outer layer of MnC2O4·2H2O nanoparticles evenly dispersed over Mn-BC was oxidized to MnIII by H2O2. This process was accompanied by the removal of coordinated H2O, resulting in the formation of MnIIIC2O4 on MnBC-H5. Under visible light irradiation, MnIII can bind to O2 to form MnIIIOOH species, which facilitates the transfer of charges and generates superoxide radicals (·O2 –) that effectively degrade organics. Notably, MnIII of MnBC-H5 remains stable after the organic degradation reaction. This study will not only provide a theoretical basis for developing environmentally friendly biochar-based catalysts but also promote the study of the environmental effects of biochar.

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“…The average crystallite size was calculated using the Debye-Scherer formula (eq ). D = k λ β cos 0.25em θ …”

Section: Methodsmentioning

confidence: 99%

Insights into O₂ Activation via Mn^IIIOOH Species on Mn-Rich Biochar

Fang,

Ying,

Niu

et al. 2023

ACS Catal.

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“…Conventional methods for wastewater treatment can be of three types: biological, chemical, and physical. These methods include membrane separation 10 , adsorption 11 , advanced oxidation 12,13 , catalytic ozonation 14 , Fenton and electro-Fenton 15 , catalytic photodegradation [16][17][18] , electrochemical degradation 19 , ultrasonic irradiation 20 and biodegradation 21 . Adsorption has gained widescale popularity due to its easy operations, cost-effectiveness, eco-friendly nature, and broad applicability 22 .…”

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confidence: 99%

A combined experimental and modeling approach to elucidate the adsorption mechanism for sustainable water treatment via In2S3-anchored chitosan

Mishra,

Roy,

Gadore

et al. 2023

Sci Rep

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A novel Chitosan/Indium sulfide (CS/In2S3) nanocomposite was created by co-precipitating Chitosan and InCl3 in solution, resulting in In2S3 agglomeration on the Chitosan matrix with a remarkable pore diameter of 170.384 Å, and characterized it for the physical and chemical properties. Under optimal conditions (pH = 7, time = 60 min, catalyst dosage = 0.24 g L−1, and dye concentration = 100 mg L-1), the synthesized nanocomposite demonstrated remarkable adsorption capabilities for Victoria Blue (VB), attaining a removal efficiency of 90.81%. The Sips adsorption isotherm best matched the adsorption process, which followed pseudo-second-order kinetics. With a rate constant of 6.357 × 10–3 g mg−1 min−1, the highest adsorption capacity (qm) was found to be 683.34 mg g−1. Statistical physics modeling (SPM) of the adsorption process revealed multi-interaction and multi-molecular adsorption of VB on the CS/In2S3 surface. The nanocomposite demonstrated improved stability and recyclability, indicating the possibility for low-cost, reusable wastewater dye removal adsorbents. These results have the potential to have practical applications in environmental remediation.

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Highly efficient SnS₂‐based photocatalyst: A green approach to biodiesel production

Gadore,

Mishra,

Yadav

et al. 2024

Biofuels Bioprod Bioref

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Biodiesel, a promising alternative to traditional petroleum fuels, is a green energy solution. Photocatalysis is a facile, novel, economic, and efficient approach to biodiesel synthesis. Metal sulfides have been used extensively for various photocatalytic applications. The present study demonstrates, for the first time, the photocatalytic production of biodiesel using a novel metal sulfide‐based heterogeneous photocatalyst under visible light irradiation.A nano zero‐valent silver doped hydroxyapatite (Ag/HAp) was synthesized using a green bio‐reductant technique and decorated with tin sulfide nanoparticles (SnS2/Ag/HAp or SAH) for photocatalytic biodiesel synthesis. The hydroxyapatite (HAp) was extracted from waste fish scales to minimize the use of chemicals and to utilize waste for useful applications. The prepared SAH photocatalyst was characterized through X‐ray diffraction, UV‐visible diffuse reflectance spectroscopy, photoluminescence spectroscopy, Fourier transform infrared analysis, energy dispersive X‐ray analysis, scanning electron microscopy, high‐resolution transmission electron microscopy and X‐ray photoelectron spectroscopy analysis. The effect of reaction parameters was optimized, and under optimum conditions of 1 wt% photocatalyst loading, and 8:1 methanol‐to‐oleic‐acid ratio, for 60 min, a high yield of 98.0 ± 0.61% could be achieved using a SAH photocatalyst.Scavenger tests indicated the simultaneous generation of photoinduced electrons and holes necessary for photocatalytic biodiesel synthesis. A mechanism for the photocatalytic esterification reaction of oleic acid is proposed. The synthesized SnS2‐based photocatalyst could be easily recoverable and reusable for five consecutive runs, which can replace traditional industrial heterogeneous catalysts in the near future.

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Insights into the enhanced photocatalytic and antioxidant properties of novel biogenically synthesised β-In₂S₃ quantum dots

Cited by 16 publications

References 68 publications

Insights into O₂ Activation via Mn^IIIOOH Species on Mn-Rich Biochar

Insights into O₂ Activation via Mn^IIIOOH Species on Mn-Rich Biochar

A combined experimental and modeling approach to elucidate the adsorption mechanism for sustainable water treatment via In2S3-anchored chitosan

Highly efficient SnS₂‐based photocatalyst: A green approach to biodiesel production

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Insights into the enhanced photocatalytic and antioxidant properties of novel biogenically synthesised β-In2S3 quantum dots

Cited by 16 publications

References 68 publications

Insights into O2 Activation via MnIIIOOH Species on Mn-Rich Biochar

Insights into O2 Activation via MnIIIOOH Species on Mn-Rich Biochar

A combined experimental and modeling approach to elucidate the adsorption mechanism for sustainable water treatment via In2S3-anchored chitosan

Highly efficient SnS2‐based photocatalyst: A green approach to biodiesel production

Contact Info

Product

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Insights into the enhanced photocatalytic and antioxidant properties of novel biogenically synthesised β-In₂S₃ quantum dots

Insights into O₂ Activation via Mn^IIIOOH Species on Mn-Rich Biochar

Insights into O₂ Activation via Mn^IIIOOH Species on Mn-Rich Biochar

Highly efficient SnS₂‐based photocatalyst: A green approach to biodiesel production