Enhanced electron transfer due to rGO makes Ag–CaTiO3@rGO a promising plasmonic photocatalyst

Lalan, Veena; Pillai, V. P. Mahadevan; Gopchandran, K.G.

doi:10.1016/j.jsamd.2022.100468

Cited by 8 publications

(7 citation statements)

References 49 publications

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“…40 With regards to GO, the C–O/CO peak can be observed at 532.79 eV. 38,41 The XPS results further evidence the successful preparation of CIS/GO@3D-OMA-3 and the interaction between CIS and GO.…”

Section: Resultsmentioning

confidence: 80%

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Photo-splitting xylose and xylan to xylonic acid and carbon monoxide

et al. 2022

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Section: Resultsmentioning

confidence: 80%

“…40 With regards to GO, the C-O/CvO peak can be observed at 532.79 eV. 38,41 The XPS results further evidence the successful preparation of CIS/ GO@3D-OMA-3 and the interaction between CIS and GO. Ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS) was then applied to study the visible light absorption of the photocatalysts (Fig.…”

Section: Resultsmentioning

confidence: 86%

Photo-splitting xylose and xylan to xylonic acid and carbon monoxide

et al. 2022

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“…The average particle size was determined as approximately 45 nm, as shown in Figure g, h. Figure a shows the XRD patterns of the MnON and MnON/RGO(1:1, 1:2, and 1:3). The diffraction peaks at 2θ = 23.2°, 32.8°, 35.5°, 38.4°, 45.1°, 49.4°, 56.7°, 64.2°, and 66.7° correspond to the (211), (113), (222), (400), (332), (431), (440), (622), (631), and (444), characteristic of MnON with a lattice parameter a = 0.9409 nm (JCPDS: 00-041-1442). , The XRD patterns of MnON/RGO composites show all the peaks corresponding to MnON, in addition to the peaks of RGO at 10.3° marked with “*” symbol . The pristine nature of the synthesized material is indicated by the lack of any impurity peaks corresponding to other phases.…”

Section: Resultsmentioning

confidence: 99%

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Mohan

Vadivel

Sathya³

et al. 2022

ACS Appl. Energy Mater.

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Photocatalytic water splitting has gained considerable attention owing to the sustainable nature of hydrogen as a clean energy source alternative to fossil fuels. In this study, nanocomposites consisting of manganese oxynitride and reduced graphene oxide were synthesized by the combined involvement of a solvothermal process and Hummer’s method and examined for their photocatalytic applications for water splitting hydrogen production and degradation of norfloxacin as a model pollutant. Spectroscopic and structural analyses showed successful formation of the stable composite in which manganese oxynitride nanoparticles are decorated on graphene sheets. With increasing content of graphene oxide in the composite, it showed the enhanced photocatalytic efficiency in water splitting hydrogen evolution. This is well explained by the large surface area, more light absorption, and interfacial charge transfer in the composite photocatalyst. The hydrogen evolution rates of MnON nanoparticles and MnON/RGO composites of mass ratios 1:1, 1:2, and 1:3 were measured as 250.1, 456.2, 543.6, and 708.5 μmol g–1 min–1, respectively, and the oxygen evolution rates were measured as 129.0, 229.4, 273.4, and 354.6 μmol g–1 min–1, respectively, suggesting the important roles of reduced graphene oxide. The photocatalysts also demonstrated enhanced stability and recyclability after multiple uses.

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“…Among these perovskites, Calcium titanate (CaTiO 3 ), has gained much interest due to its remarkable properties of optoelectronic, ferroelectricity, and photocatalytic activity 12 . Calcium titanate CaTiO 3 is an n-type semiconductor 13 with a perovskite structure; it possesses excellent characteristics, such as earth-abundance and non-toxicity of its constituent elements, cost-effective, high dielectric constant, ease of synthesis, and high chemical stability 14 . Several methods have been reported to prepare CaTiO 3 , such as solid-state reaction 15 , co-precipitation 16 , mechano-chemical milling, sol–gel 17 , and hydrothermal process 18 .…”

Section: Introductionmentioning

confidence: 99%

Gamma radiation-induced synthesis of novel PVA/Ag/CaTiO3 nanocomposite film for flexible optoelectronics

Abdel Maksoud,

Abdelhaleem,

Tawfik

et al. 2023

Sci Rep

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A flexible nanocomposite film based on polyvinyl alcohol (PVA), silver nanoparticles, and calcium titanate (CaTiO3) was synthesized using gamma radiation induced-reduction. Temperature-dependent structural, optical, DC electrical conductivity, electric modulus, and dielectric properties of PVA/Ag/CaTiO3 nanocomposite film were investigated. The XRD pattern proved the successful preparation of the nanocomposite film. Also, as the temperature increases, the average crystallite sizes of CaTiO3 and Ag nanoparticles decrease from 19.8 to 9.7 nm and 25 to 14.8 nm, respectively. Further, the optical band gap increased from 5.75 to 5.84 eV with increasing temperature. The thermal stability is improved, and the semiconductor behavior for PVA/Ag/CaTiO3 nanocomposite film is confirmed by thermal activation energy ΔE with values in the 0.11–0.8 eV range. Furthermore, the maximum barrier Wm value was found of 0.29 eV. PVA/Ag/CaTiO3 nanocomposite film exhibits a semicircular arc originating from the material’s grain boundary contributions for all temperatures. The optical, DC electrical conductivity, and dielectric properties of the PVA/Ag/CaTiO3 nanocomposite film can be suitable for flexible electronic devices such as electronic chips, optoelectronics, and energy storage applications.

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Enhanced electron transfer due to rGO makes Ag–CaTiO3@rGO a promising plasmonic photocatalyst

Cited by 8 publications

References 49 publications

Photo-splitting xylose and xylan to xylonic acid and carbon monoxide

Photo-splitting xylose and xylan to xylonic acid and carbon monoxide

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Gamma radiation-induced synthesis of novel PVA/Ag/CaTiO3 nanocomposite film for flexible optoelectronics

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