Synthesis of SnO2-Ag nanocomposites via thermal decomposition method and their application for catalytic reduction of 4-nitrophenol and photocatalytic degradation of congo red

Gangwar, Kumkum; Jeevanandam, P.

doi:10.1016/j.molstruc.2023.135423

Cited by 11 publications

(9 citation statements)

References 113 publications

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“…The Ti peaks observed at 458.6 eV and 464.1 eV are assigned to Ti 2p 3/2 (Ti 4+ ) and Ti 2p 1/2 (Ti 4+ ), respectively. The O 1s peaks located at 528.9 eV and 530.8 eV are ascribed to O 2− (lattice oxygen) and O 2− (surface OH) of TiO 2 , respectively [45] . Figure 9b displays Ti 2p, Ni 2p and O 1s spectra of TiO 2 @NiO‐0.5.…”

Section: Resultsmentioning

confidence: 99%

“…Effective charge separation occurs at the interface and the e − and h + react with O 2 and H 2 O molecules to form O 2 ⋅ − and ⋅OH, respectively. The ROS (O 2 ⋅ − and ⋅OH) lead to photocatalytic degradation of RhB [45] …”

Section: Resultsmentioning

confidence: 99%

“…The O 1s peaks located at 528.9 eV and 530.8 eV are ascribed to O 2 À (lattice oxygen) and O 2 À (surface OH) of TiO 2 , respectively. [45] Figure 9b displays Ti 2p, Ni 2p and O 1s spectra of TiO 2 @NiO-0.5. The peaks observed at 458.9 eV and 464. eV are ascribed to O 2 À (lattice oxygen) and O 2 À (surface OH) of TiO 2 @NiO, respectively.…”

Section: Optical Properties Of Tio 2 @Nio Core-shell Nanoparticlesmentioning

confidence: 99%

“…The ROS (O 2 *À and * OH) lead to photocatalytic degradation of RhB. [45] Radical scavenger tests were performed to further confirm the role of ROS (O 2 scavenger, and ammonium oxalate (AO) as a hole scavenger. In the scavenger experiments, 10 mg of photocatalyst (TiO 2 @NiO-0.5) was dispersed in 10 mL of RhB (1×10 À 5 M) aqueous solution followed by addition of specific scavenger (10 mmol).…”

Section: Mechanism Of Photocatalysismentioning

confidence: 99%

“…[45] In order to further confirm the generation of * OH during the photodegradation of RhB using TiO 2 @NiO CSNPs, terephthalic acid (TA) was chosen as fluorescence probe molecule. [45] Terephthalic acid reacts with * OH to give 2-hydroxy terephthalic acid with λ em = 425 nm. In this experiment, 30 mg of photocatalyst (TiO 2 @NiO-0.5) was dispersed in 30 mL aqueous solution of 2 mM NaOH and 0.5 mM TA.…”

Section: Mechanism Of Photocatalysismentioning

confidence: 99%

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A Facile Synthetic Approach for TiO₂@NiO Core‐shell Nanoparticles using TiO₂@Ni(OH)₂ Precursors and their Photocatalytic Application

Rana,

Jeevanandam

2024

ChemNanoMat

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The current study presents a simple and an efficient chemical method for the synthesis of TiO2@NiO core‐shell nanoparticles (CSNPs) as photocatalyst for effective degradation of rhodamine B (RhB) in aqueous solution upon sunlight irradiation. First, TiO2 spheres were synthesized using a wet chemical method. Then, TiO2@Ni(OH)2 precursors were prepared via homogeneous precipitation and TiO2@NiO core‐shell nanoparticles were obtained on calcination of the precursors. The synthesized precursors and the TiO2@NiO CSNPs were analyzed using XRD, FT‐IR, FESEM and DRS. XRD data shows the presence of both TiO2 and NiO phases in the TiO2@NiO samples. FE‐SEM and TEM analyses confirm coating of NiO NPs on TiO2 spheres with varying shell thickness (40 nm to 170 nm). Optical studies reveal that TiO2@NiO CSNPs possess band gap of about ∼3.7 eV. Photoluminescence (PL) results show lower recombination rate of e− and h+ pairs in the TiO2@NiO CSNPs. XPS studies confirm the presence of different elements in the TiO2@NiO CSNPs. Magnetic investigations reveal ferromagnetic behavior of the core‐shell NPs at 5 K. The TiO2@NiO CSNPs were explored as photocatalyst for the degradation of rhodamine B in water under natural sunlight. The TiO2@NiO CSNPs exhibit better photocatalytic activity compared to TiO2 and NiO nanoparticles.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Optical Properties Of Tio 2 @Nio Core-shell Nanoparticlesmentioning

confidence: 99%

Section: Mechanism Of Photocatalysismentioning

confidence: 99%

Section: Mechanism Of Photocatalysismentioning

confidence: 99%

See 3 more Smart Citations

A Facile Synthetic Approach for TiO₂@NiO Core‐shell Nanoparticles using TiO₂@Ni(OH)₂ Precursors and their Photocatalytic Application

Rana,

Jeevanandam

2024

ChemNanoMat

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Synergistic Hydrogen Peroxide‐Driven Cation Valence Regulation and La/O Co‐Doped SnS‐Based Oxysulfide Catalyst for Efficient Catalytic Reduction of Toxic Organics and Cr(VI) Under Dark

Zhang,

et al. 2024

Advanced Sustainable Systems

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A novel La/O co‐doped SnS oxysulfide catalyst (labeled SnLaOS) with heterovalent tin states and sulfur vacancy defects is successfully synthesized for effective catalytic reduction of toxic organics heavy metal ions with NaBH4 in the dark. La/O co‐doped and hydrogen peroxide‐driven SnLaOS catalyst with suitable heterovalent Sn2+/Sn4+ states and sulfur vacancy defects exhibited excellent catalytic reduction capability. The 100 mL 20 ppm of 4‐nitrophenol (4‐NP) and 50 ppm of rhodamine‐B (RhB), methylene blue (MB), methyl orange (MO), and Cr(VI) solution are entirely reduced by 5 mg SnLaOS‐3 within 10, 12, 12, 16, and 14 min, respectively, with durable stability. Synergistic transition metal La3+‐cation and O2−‐anion co‐doped SnS adjusted the energy bandgap and introduced sulfur vacancy defects, and the hydrogen peroxide‐driven regulated the SnLaOS with suitable Sn4+/Sn2+ states ratio. The sulfur vacancies in SnLaOS provide active sites for adsorbed proton for pollutants reduction, and heterovalent Sn2+/Sn4+ states in SnLaOS facilitates electrons efficient transfer through electron hopping between Sn2+ and Sn4+ for pollutants reduction. This study provides a novel efficient catalyst for the water pollutants treatment.

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Biosynthesis of CuFe2O4@Ag hybrid nanocomposite: Ultrasensitive detection and catalytic reduction of 4-nitrophenol

Punyasamudram,

Puthalapattu,

Bathinapatla

et al. 2024

Chemical Physics Impact

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Synthesis of SnO2-Ag nanocomposites via thermal decomposition method and their application for catalytic reduction of 4-nitrophenol and photocatalytic degradation of congo red

Cited by 11 publications

References 113 publications

A Facile Synthetic Approach for TiO₂@NiO Core‐shell Nanoparticles using TiO₂@Ni(OH)₂ Precursors and their Photocatalytic Application

A Facile Synthetic Approach for TiO₂@NiO Core‐shell Nanoparticles using TiO₂@Ni(OH)₂ Precursors and their Photocatalytic Application

Synergistic Hydrogen Peroxide‐Driven Cation Valence Regulation and La/O Co‐Doped SnS‐Based Oxysulfide Catalyst for Efficient Catalytic Reduction of Toxic Organics and Cr(VI) Under Dark

Biosynthesis of CuFe2O4@Ag hybrid nanocomposite: Ultrasensitive detection and catalytic reduction of 4-nitrophenol

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Synthesis of SnO2-Ag nanocomposites via thermal decomposition method and their application for catalytic reduction of 4-nitrophenol and photocatalytic degradation of congo red

Cited by 11 publications

References 113 publications

A Facile Synthetic Approach for TiO2@NiO Core‐shell Nanoparticles using TiO2@Ni(OH)2 Precursors and their Photocatalytic Application

A Facile Synthetic Approach for TiO2@NiO Core‐shell Nanoparticles using TiO2@Ni(OH)2 Precursors and their Photocatalytic Application

Synergistic Hydrogen Peroxide‐Driven Cation Valence Regulation and La/O Co‐Doped SnS‐Based Oxysulfide Catalyst for Efficient Catalytic Reduction of Toxic Organics and Cr(VI) Under Dark

Biosynthesis of CuFe2O4@Ag hybrid nanocomposite: Ultrasensitive detection and catalytic reduction of 4-nitrophenol

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A Facile Synthetic Approach for TiO₂@NiO Core‐shell Nanoparticles using TiO₂@Ni(OH)₂ Precursors and their Photocatalytic Application

A Facile Synthetic Approach for TiO₂@NiO Core‐shell Nanoparticles using TiO₂@Ni(OH)₂ Precursors and their Photocatalytic Application