scholarly journals Visible-Light-Driven SO42-/TiO2 Photocatalyst Synthesized from Binh Dinh (Vietnam) Ilmenite Ore for Rhodamine B Degradation

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Tan Lam Nguyen ◽  
Viet Dinh Quoc ◽  
Thi Lan Nguyen ◽  
Thi Thanh Thuy Le ◽  
Thanh Khan Dinh ◽  
...  
Keyword(s):  
Visible Light ◽  
Specific Surface ◽  
Photocatalytic Degradation ◽  
Surface Area ◽  
Rhodamine B ◽  
Low Cost ◽  
Tio2 Photocatalyst ◽  
Tio2 Sample ◽  
Sunlight Irradiation ◽  
Visible Light Driven

A low-cost and simplistic approach for the synthesis of nanosized SO42-/TiO2 photocatalyst was successfully performed using Binh Dinh ilmenite ore and H2SO4 as titanium and sulfur sources, respectively. The experimental results indicate that the obtained material exists in the form of particles with a size of about 22 nm and has a specific surface area of about 49 m2 g-1. Compared with the TiO2 sample, the SO42-/TiO2 sample shows much higher photocatalytic degradation of rhodamine B (RhB) under the sunlight irradiation. In more details, the nanosized SO42-/TiO2 sample obtained is capable of completely decomposing RhB after 9 hours of irradiation by a 60 W LED lamp with a corresponding intensity of 9,500 Lux. However, when the SO42-/TiO2 is irradiated by the sunlight with the intensity of 65,000 Lux, it only takes 2 hours to completely decompose rhodamine B (RhB), facilitating the use of SO42-/TiO2 as a potential photocatalyst for the RhB photodegradation.

High Surface Area SnO2 -Ta2 O5 Composite for Visible Light-driven Photocatalytic Degradation of an Organic Dye

2018 ◽  
Vol 94 (4) ◽  
pp. 633-640 ◽  
Author(s):  
Bharath Velaga ◽  
Pradeep P. Shanbogh ◽  
Diptikanta Swain ◽  
Chandrabhas Narayana ◽  
Nalini G. Sundaram
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Organic Dye ◽  
Visible Light Driven

scholarly journals Photodegradation of Rhodamine B in Presence of CaO and NiO-CaO Catalysts

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Tobias Kornprobst ◽  
Johann Plank
Keyword(s):  
Visible Light ◽  
Specific Surface ◽  
Surface Area ◽  
Rhodamine B ◽  
Uv Light ◽  
Mechanistic Study ◽  
Light Conditions ◽  
No Adsorption ◽  
Charged Surfaces ◽  
Positively Charged

A CaO catalyst was prepared by mild calcination (650°C) of facilely precipitated Ca(OH)2and compared to an NiO-CaO catalyst obtained from an Ni(OH)2/Ca(OH)2coprecipitate as a precursor. Both catalysts degraded rhodamine B (RB) effectively when exposed to ultraviolet light but exhibited slower degradation under visible light conditions. Under UV light, CaO was more effective than NiO-CaO, while in visible light, the opposite was observed. A mechanistic study revealed no influence of the specific surface area of the catalysts on RB degradation, no adsorption of RB on the positively charged surfaces of the catalysts, and only incomplete degradation of RB. Consequently, both materials represent nonconventional photocatalysts.

Simple and low-cost synthesis of CuO nanosheets for visible-light-driven photocatalytic degradation of textile dyes

2018 ◽  
Vol 6 (2) ◽  
pp. 2003-2010 ◽  
Author(s):  
Martha Purnachander Rao ◽  
Pannerselvam Sathishkumar ◽  
Ramalinga Viswanathan Mangalaraja ◽  
Abdullah M. Asiri ◽  
Palani Sivashanmugam ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Low Cost ◽  
Textile Dyes ◽  
Visible Light Driven ◽  
Cuo Nanosheets

The Preparation of Cu-BiVO4 and its Enhanced Photocatalytic Properties for Degradation of Phenol

2011 ◽  
Vol 356-360 ◽  
pp. 1253-1257
Author(s):  
Xiao Ming Gao ◽  
Yu Fei Wu ◽  
Jing Wang ◽  
Feng Fu ◽  
Li Ping Zhang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Visible Light ◽  
Specific Surface ◽  
Hydrothermal Method ◽  
Surface Area ◽  
Specific Surface Area ◽  
Air Flow ◽  
Photocatalytic Properties ◽  
Visible Light Driven

An enhanced visible-light-driven catalyst BiVO4 doping with Cu was synthesized by hydrothermal method and characterized by XRD, UV-vis DRS, specific surface area. The characterization results indicated a better crystal structure of Cu-BiVO4. The photocatalytic properties were evaluated by degrading wastewater with phenol, taking pH of catalysts prepared, dosage of catalyst and air flow as the research factors. The results showed that Cu-BiVO4 has an effective photodegradation of phenol under the suitable conditions.

A highly photoactive, visible-light-driven graphene/2D mesoporous TiO2 photocatalyst

2015 ◽  
Vol 17 (7) ◽  
pp. 3972-3978 ◽  
Author(s):  
Kyeong Min Cho ◽  
Kyoung Hwan Kim ◽  
Hyung Ouk Choi ◽  
Hee-Tae Jung
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
Charge Separation ◽  
Mesoporous Tio2 ◽  
Tio2 Photocatalyst ◽  
Enhanced Absorption ◽  
Reduced Graphene ◽  
Visible Light Driven

In this paper, we have reported a new, visible-light-driven photocatalyst composed of 2D mesoporous TiO2 on reduced graphene oxide, which enables enhanced absorption of visible light, showing outstanding charge separation ability, and a large surface area.

Visible Light-Driven Photocatalytic Degradation of Rhodamine B over NaBiO3: Pathways and Mechanism

2009 ◽  
Vol 113 (37) ◽  
pp. 10024-10032 ◽  
Author(s):  
Kai Yu ◽  
Shaogui Yang ◽  
Huan He ◽  
Cheng Sun ◽  
Chenggang Gu ◽  
...  
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Visible Light Driven

scholarly journals Synthesis of BiSI/Ag2CO3 Composite Material for Photocatalytic Degradation of Rhodamine B under Visible Light

2021 ◽  
Author(s):  
Rui Zhang ◽  
ziyin chen ◽  
Chen Zhao ◽  
Kunlin Zeng ◽  
Lu Cai ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Electrochemical Impedance ◽  
Diffuse Reflectance Spectroscopy ◽  
Mass Ratio ◽  
X Ray ◽  
Visible Light Driven

Abstract A novel binary BiSI/Ag2CO3 photocatalyst with excellent visible light-driven photocatalytic performance was prepared. The products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis DRS) and electrochemical impedance spectroscopy (EIS). The photocatalytic activity of the samples were evaluated by photocatalytic degradation of rhodamine B(RhB) under the irradiation of visible light. The results showed that the BiSI improves the photocatalytic activity of BiSI/Ag2CO3. Moreover, when the mass ratio of BiSI in BiSI/Ag2CO3 composites was 40%, the as-prepared BiSI/Ag2CO3 composite exhibited the best photocatalytic activity for degrading RhB. Finally, the possible mechanism for photodegradation over the BiSI/Ag2CO3 composites is also proposed.

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