scholarly journals Efficient Photoreduction of Hexavalent Chromium Using the Reduced Graphene Oxide–Sm2MoO6–TiO2 Catalyst under Visible Light Illumination

ACS Omega ◽  
2020 ◽  
Vol 5 (12) ◽  
pp. 6414-6422 ◽  
Author(s):  
Annamalai Raja ◽  
Palani Rajasekaran ◽  
Karuppaiah Selvakumar ◽  
Mukannan Arivanandhan ◽  
Sultan Asath Bahadur ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Hexavalent Chromium ◽  
Light Illumination ◽  
Tio2 Catalyst ◽  
Visible Light Illumination ◽  
Reduced Graphene

scholarly journals Reduced graphene oxide supported ZnO quantum dots for visible light-induced simultaneous removal of tetracycline and hexavalent chromium

RSC Advances ◽  
2020 ◽  
Vol 10 (35) ◽  
pp. 20494-20503 ◽  
Author(s):  
K. V. Ashok Kumar ◽  
Bhairi Lakshminarayana ◽  
D. Suryakala ◽  
Ch. Subrahmanyam
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Hexavalent Chromium ◽  
Hydroxyl Radicals ◽  
Simultaneous Removal ◽  
Photocatalytic Mechanism ◽  
Reduced Graphene ◽  
Zno Quantum Dots

The photocatalytic mechanism explains that electrons and hydroxyl radicals were responsible for reduction of Cr(vi) and oxidation of tetracycline.

scholarly journals Reduced Graphene Oxide/ZnIn2S4 Nanocomposite Photocatalyst with Enhanced Photocatalytic Performance for the Degradation of Naproxen under Visible Light Irradiation

Catalysts ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 710
Author(s):  
Kun Fu ◽  
Yishuai Pan ◽  
Chao Ding ◽  
Jun Shi ◽  
Huiping Deng
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Reduced Graphene Oxide ◽  
Environmental Remediation ◽  
Dominant Role ◽  
Degradation Pathway ◽  
Light Illumination ◽  
One Pot ◽  
Reduced Graphene

The development of photocatalysts with visible light response is of great significance to cope with energy crisis and environmental remediation. In this study, a visible light-driven photocatalyst reduced graphene oxide/ZnIn2S4 (rGO/ZIS) was prepared by a facile one-pot hydrothermal method. The photocatalyst was used for the degradation of naproxen under visible light illumination and it exhibited remarkably degradation efficiency (nearly 99% within 60 min). The improved photocatalytic degradation performance can be attributed to the enhancement of light adsorption capacity and effective separation of photoinduced electron–hole pairs. The reactive species quenching experiments and EPR measurements demonstrated that superoxide radical (–O2−) and hole (h+) play a dominant role in the photocatalytic degradation reactions. In addition, the degradation intermediates were identified and the degradation pathway was suggested.

scholarly journals Enhanced photocatalytic performance of Nb doped TiO2/reduced graphene oxide nanocomposites over rhodamine B dye under visible light illumination

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Neradabilli Prabhakarrao ◽  
Tirukkovalluri Siva Rao ◽  
Kapuganti Venkata Divya Lakshmi ◽  
Gorli Divya ◽  
Genji Jaishree ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Diffuse Reflectance Spectroscopy ◽  
Light Exposure ◽  
Light Illumination ◽  
Reduced Graphene

AbstractThe present study discusses the synthesis of Nb doped TiO2/reduced graphene oxide (rGO) intercalated nanocomposites via sol-gel route at a lower temperature by using different loading amounts of graphene oxide (GO) (1 to 10 wt%). The synthesized composite materials were further characterized by copious instruments such as X-ray Diffractometer, UV-Vis Diffuse Reflectance Spectroscopy, Scanning Electron Microscopy, Transmission Electron Microscopy, Brunauer-Emmett-Teller surface area analysis, Raman and Fourier Transform-Infrared Spectroscopy. The experimental results stated that the Nb doped TiO2 nanoparticles uniformly distributed on the surface of rGO with an interfacial linking bond between TiO2 and rGO. Later, the photocatalytic degradation of Rhodamine B (RhB) dye using produced materials under visible light irradiation was examined. These results revealed that Nb doped TiO2/rGO nanocomposites exhibited better photocatalytic performance than Nb doped TiO2 for the removal of RhB dye. However, among all, the nanocomposite having 5 wt% of GO content achieves the highest degradation efficiency for RhB dye approximately 98% under visible light exposure. Altogether, the unique properties such as electron accepting and transporting properties of GO in the nanocomposite is caused to enhance photocatalytic activity by minimizing the charge carrier’s recombination rate.

scholarly journals Enhanced Photocatalytic Performance of Nb Doped TiO2/reduced Graphene Oxide Nanocomposites Over Rhodamine B Dye Under Visible Light Illumination

2021 ◽  
Author(s):  
N. Prabhakarrao ◽  
K.V. Divya Lakshmi ◽  
G. Divya ◽  
G. Jaishree ◽  
Imandi Manga Raju ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Bet Surface Area ◽  
Light Illumination ◽  
Reduced Graphene ◽  
Rhodamine B Dye

Abstract The present study discusses the synthesis of Nb doped TiO2/reduced Graphene Oxide (GO) intercalated nanocomposites via sol-gel route at a lower temperature by using different loading amounts of GO (1 to 10 wt%). The synthesized composite materials were further characterized by copious instruments such as X-ray Diffractometer, UV-vis Diffuse Reflectance Spectroscopy, Scanning Electron Microscopy, Transmission Electron Microscopy, BET surface area analysis, Raman and FT-Infrared Spectroscopy. The experimental results stated that the Nb doped TiO2 nanoparticles uniformly distributed on the surface of reduced Graphene Oxide (rGO) with an interfacial linking bond between TiO2 and rGO. Later, the photocatalytic degradation of Rhodamine B dye using produced materials under visible light irradiations was examined. These results reveal that Nb doped TiO2/rGO nanocomposites exhibited better photocatalytic performance than Nb doped TiO2 for the removal of Rhodamine B dye. However, among all, the nanocomposite having 5% of GO content achieves the highest degradation rate for Rhodamine B dye approximately 98% under visible light exposure. Overall, the unique properties such as electron accepting and transporting properties of GO in the nanocomposites help to enhance photocatalytic activity by minimizing the charge carrier’s recombination rate.

Visible light responsive Cu2MoS4 nanosheets incorporated reduced graphene oxide for efficient degradation of organic pollutant

2017 ◽  
Vol 418 ◽  
pp. 128-137 ◽  
Author(s):  
R. Rameshbabu ◽  
R. Vinoth ◽  
M. Navaneethan ◽  
S. Harish ◽  
Y. Hayakawa ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Organic Pollutant ◽  
Reduced Graphene
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