Environmentally Benign Organic Dye Conversion under UV Light through TiO2-ZnO Nanocomposite

Deshmukh, Sandip M.; Arbuj, Sudhir S.; Babar, Santosh B.; Shaikh, Shoyebmohamad F.; Tamboli, Asiya M.; Truong, Nguyen Tam Nguyen; Kim, Chang-Duk; Khetre, Sanjay M.; Tamboli, Mohaseen S.; Bamane, S. R.

doi:10.3390/met11111787

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…N-GQDs corresponded to lattice fringes with a spacing of 0.21 nm, which proved the presence of graphite and was consistent with the graphene (100) diffraction plane (Pan et al 2015). In addition, the 0.35 nm lattice fringe was attributed to the presence of TiO 2 , corresponding to the (101) lattice plane of anatase phase TiO 2 (Deshmukh et al 2021). This was consistent with XRD results.…”

Section: Tem Analysissupporting

confidence: 62%

Preparation and visible light catalytic degradation of hollow urchin-like TiO2/N-GQDs composites on waste organic dyes

Liu,

Xu,

et al. 2024

Preprint

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In order to enhance the visible light catalytic activity of TiO2 by broadening its photoresponse range, the TiO2/N-GQDs (TGs) composite catalysts with a three-dimensional hollow urchin-like structure were prepared by one-step hydrothermal method using potassium titanium oxalate and citric acid as raw materials. The microstructure and photoelectric properties of the synthesized TGs composites were analyzed through a series of characterizations, and the performance in degrading organic dyes under visible light was investigated. The results demonstrated that the prepared composites effectively enhanced the visible light absorption spectrum of TiO2 by forming heterojunction, and the photocatalytic degradation efficiency of TGs composites on organic dyes was significantly improved than neat TiO2. The degradation efficiency of organic dyes could reach 95.71% under visible light irradiation for 1 hour, which further increased to 99.39% after 2 hours. Additionally, the photocatalytic degradation process could be effectively accelerated under acid conditions. After 5 cycles of testing, the degradation efficiency of TGs composites on organic dyes was hardly reduced, indicating that they had great visible light catalytic activity and significant reusability.

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Section: Tem Analysissupporting

confidence: 62%

Preparation and visible light catalytic degradation of hollow urchin-like TiO2/N-GQDs composites on waste organic dyes

Liu,

Xu,

et al. 2024

Preprint

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show abstract

“…Moreover, compared with WS 2 /WSe 2 -20 (0.347 cm 3 g −1 ), the average pore diameter (9.5 nm) of WS 2 /WSe 2 -20 is improved. On the other hand, it provides to effectively separating the photoexcited charge carries, thus will also demonstrate more active sites for promoting photocatalytic hydrogen evolution capability [18].…”

Section: Microstructure Characterizationmentioning

confidence: 99%

Fabrication of WS2/WSe2 Z-Scheme Nano-Heterostructure for Efficient Photocatalytic Hydrogen Production and Removal of Congo Red under Visible Light

et al. 2022

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In this study, a novel tungsten disulfide/tungsten diselenide (WS2/WSe2) heterojunction photocatalyst by a facile hydrothermal process with great capable photocatalytic efficiency for hydrogen evolution from water and organic compound removal was discussed. The WS2/WSe2 heterojunction photocatalyst to form heterojunctions to inhibit the quick recombination rate of photo-response holes and electrons is reflected to be a useful method to enhance the capability of photocatalysis hydrogen production. The hydrogen production rate of the WS2/WSe2 photocatalyst approach is 3856.7 μmol/g/h, which is 12 and 11 folds the efficiency of bare WS2 and WSe2, respectively. Moreover, the excellent photocatalytic performance for Congo Red (CR) removal (92.4%) was 2.4 and 2.1 times higher than those of bare WS2 and WSe2, respectively. The great photocatalytic efficiency was owing to the capable electrons and holes separation of WS2/WSe2 and the construction of Z-scheme heterostructure, which possessed vigorous photocatalytic oxidation and reduction potentials. The novel one-dimensional structure of WS2/WSe2 heterojunction shortens the transport pathway of photo-induced electrons and holes. This work provided an insight to the pathway of interfacial separation and transferring for induced charge carriers, which can refer to the interfacial engineering of developed nanocomposite photocatalysts. It possessed great capable photocatalytic efficiency of hydrogen production and organic dye removal. This study offers an insight to the route of interfacial migration and separation for induced charge carriers to generating clean hydrogen energy and solve environmental pollution issue.

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Synthesis of hollow urchin-like TiO2/N-GQDs composites and efficient photocatalytic degradation research on waste organic dyes

Liu,

Xu,

et al. 2024

Inorganica Chimica Acta

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Environmentally Benign Organic Dye Conversion under UV Light through TiO2-ZnO Nanocomposite

Cited by 5 publications

References 32 publications

Preparation and visible light catalytic degradation of hollow urchin-like TiO2/N-GQDs composites on waste organic dyes

Preparation and visible light catalytic degradation of hollow urchin-like TiO2/N-GQDs composites on waste organic dyes

Fabrication of WS2/WSe2 Z-Scheme Nano-Heterostructure for Efficient Photocatalytic Hydrogen Production and Removal of Congo Red under Visible Light

Synthesis of hollow urchin-like TiO2/N-GQDs composites and efficient photocatalytic degradation research on waste organic dyes

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