Preparation of AgCl/Ag<sub>3</sub>PO<sub>4</sub>/Diatomite Composite by Microemulsion Method for Rapid Photo-Degradation of Rhodamine B with Stability under Visible Light

BiPO4microcrystal was prepared via a simple deposition –precipitation synthesis process. XRD, UV-Vis-DRS and FE-SEM techniques were employed to investigate its’ phase composition, morphology. The photocatalytic activity of the as-prepared samples was evaluated by the degradation rate of Rhodamine B (RhB) and p-nitrophenol. The photo degradation experiments result indicated that RhB and p-nitrophenol were easily photodegradated with as-synthesis BiPO4microcrystal under mental halide lamp irradiation. Furthermore, the photoctalytic activity mechanism was also discussed.

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A green synthesized recyclable ZnO/MIL-101(Fe) for Rhodamine B dye removal via adsorption and photo-degradation under UV and visible light irradiation

Environmental Technology ◽

10.1080/09593330.2019.1647290 ◽

2019 ◽

pp. 1-18 ◽

Cited By ~ 7

Author(s):

Enas Amdeha ◽

Rasha S. Mohamed

Keyword(s):

Visible Light ◽

Visible Light Irradiation ◽

Rhodamine B ◽

Dye Removal ◽

Light Irradiation ◽

Photo Degradation ◽

Rhodamine B Dye

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Construction of self-sufficient Z-scheme Ag3PW12O40/TiO2 photocatalysts for the improved visible-light-driven photo-degradation of rhodamine B

Research on Chemical Intermediates ◽

10.1007/s11164-018-3585-8 ◽

2018 ◽

Vol 44 (12) ◽

pp. 7769-7788 ◽

Cited By ~ 6

Author(s):

Shengnan Cai ◽

Shukui Shi ◽

Haiyan Li ◽

Yan Bai ◽

Dongbin Dang

Keyword(s):

Visible Light ◽

Rhodamine B ◽

Photo Degradation ◽

Tio2 Photocatalysts ◽

Construction Of Self ◽

Visible Light Driven

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Photo-catalytic Study of Malachite Green Dye Degradation Using Rice Straw Extracted Activated Carbon Supported ZnO Nano-particles

Nanoscience &Nanotechnology-Asia ◽

10.2174/2210681209666190722121926 ◽

2020 ◽

Vol 10 (6) ◽

pp. 849-859

Author(s):

Radwa A. El-Salamony ◽

Abeer A. Emam ◽

Nagwa A. Badawy ◽

Sara F. El-Morsi

Keyword(s):

Activated Carbon ◽

Visible Light ◽

Rice Straw ◽

Malachite Green ◽

Dye Degradation ◽

Nano Particles ◽

Oh Radicals ◽

Impregnation Method ◽

Photo Degradation ◽

Malachite Green Dye

Objective: ZnO nanoparticles were synthesized using wet impregnation method, and activated carbon from rice straw (RS) prepared through chemical route. Methods: The nano-composites ZnO-AC series were prepared with different ZnO:AC ratio of 10, 20, 50, and 70% to optimize the zinc oxide nanoparticles used. The obtained composites were characterized by FE-SEM, XRD, SBET, and optical techniques then used for the photo-degradation of Malachite green dye (MG) under visible light. Results: It was found that 10ZnO-AC exhibited excellent visible light photo-catalytic performance. The ·OH radicals’ formation is matching with photo-activity of the prepared composites. The photo-degradation efficiency of MG increased from 63% to 93%, when the 10ZnO-AC photocatalyst amount was increased from 0.5 to 6 g/L. Conclusion: The GC-MS technique was used to analyze the intermediates formed; up to 15 kinds of chemicals were identified as the degradation products.

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Preparation and Photocatalytic Performance for Degradation of Rhodamine B of AgPt/Bi4Ti3O12 Composites

Nanomaterials ◽

10.3390/nano10112206 ◽

2020 ◽

Vol 10 (11) ◽

pp. 2206

Author(s):

Gaoqian Yuan ◽

Gen Zhang ◽

Kezhuo Li ◽

Faliang Li ◽

Yunbo Cao ◽

...

Keyword(s):

Visible Light ◽

Noble Metal ◽

Rhodamine B ◽

Photocatalytic Performance ◽

Bimetallic Nanoparticles ◽

Resonance Effect ◽

Visible Region ◽

Photogenerated Electron ◽

Pt Nanoparticles ◽

Electron Hole

Loading a noble metal on Bi4Ti3O12 could enable the formation of the Schottky barrier at the interface between the former and the latter, which causes electrons to be trapped and inhibits the recombination of photoelectrons and photoholes. In this paper, AgPt/Bi4Ti3O12 composite photocatalysts were prepared using the photoreduction method, and the effects of the type and content of noble metal on the photocatalytic performance of the catalysts were investigated. The photocatalytic degradation of rhodamine B (RhB) showed that the loading of AgPt bimetallic nanoparticles significantly improved the catalytic performance of Bi4Ti3O12. When 0.10 wt% noble metal was loaded, the degradation rate for RhB of Ag0.7Pt0.3/Bi4Ti3O12 was 0.027 min−1, which was respectively about 2, 1.7 and 3.7 times as that of Ag/Bi4Ti3O12, Pt/Bi3Ti4O12 and Bi4Ti3O12. The reasons may be attributed as follows: (i) the utilization of visible light was enhanced due to the surface plasmon resonance effect of Ag and Pt in the visible region; (ii) Ag nanoparticles mainly acted as electron acceptors to restrain the recombination of photogenerated electron-hole pairs under visible light irradiation; and (iii) Pt nanoparticles acted as electron cocatalysts to further suppress the recombination of photogenerated electron-hole pairs. The photocatalytic performance of Ag0.7Pt0.3/Bi4Ti3O12 was superior to that of Ag/Bi4Ti3O12 and Pt/Bi3Ti4O12 owing to the synergistic effect between Ag and Pt nanoparticles.

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Green synthesized Ag-TiO2 for degradation of organic dye through visible light driven photo-reactor and its kinetics

International Journal of Chemical Reactor Engineering ◽

10.1515/ijcre-2021-0111 ◽

2021 ◽

Vol 0 (0) ◽

Author(s):

Titikshya Mohapatra ◽

Sakshi Manekar ◽

Vijyendra Kumar Sahu ◽

Ashwini Kumar Soni ◽

Sudip Banerjee ◽

...

Keyword(s):

Visible Light ◽

Mangifera Indica ◽

Band Gap Energy ◽

Photo Degradation ◽

X Ray ◽

Green Approach ◽

Vis Spectroscopy ◽

Rate Of Reaction ◽

Visible Light Driven ◽

Modification Of Titanium

Abstract This study reports a green approach for the modification of titanium dioxide (TiO2) nanoparticles with immobilization of silver nanoparticles. One of the natural sources i.e., Mangifera indica leaf extract was utilized as reducing and capping agent for the fabrication of Ag-TiO2 nanocatalyst. Further, the surface morphology and band-gap energy of prepared Ag-TiO2 were analyzed by Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS) and UV–Vis spectroscopy. Also, it was characterized by X-ray Powder Diffraction (XRD) which provides the information regarding the crystallinity of the Ag-TiO2. Subsequently, photo activity of Ag-TiO2 was investigated for the degradation of methylene blue (MB) dye wastewater through visible light driven photoreactor. The Ag-TiO2 provided highest (68%) of photo-degradation efficiency within 110 min for 7.81 × 10−5 mol/L initial MB concentration at pH 8 by using 0.19 g/L photocatalyst. Further, addition of 10 mM H2O2 boost up the MB photodegradation to 74%. The kinetic study confirmed the MB degradation followed first order rate of reaction.

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