scholarly journals Enhanced Photocatalytic Degradation of Rhodamine B Using C/Fe Co-Doped Titanium Dioxide Coated on Activated Carbon

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Thuy Le Thi Thanh ◽  
Lan Nguyen Thi ◽  
Trinh Tran Dinh ◽  
Noi Nguyen Van
Keyword(s):  
Titanium Dioxide ◽  
Activated Carbon ◽  
Photocatalytic Degradation ◽  
Rhodamine B ◽  
Supported Catalysts ◽  
Sol Gel ◽  
Adsorption Effect ◽  
Catalytic Activities ◽  
Doped Titanium Dioxide ◽  
Co Doped

Carbon and iron co-doped titanium dioxide catalyst coated on activated carbon (Fe-C-TiO2/AC) was successfully synthesized using the sol-gel method, followed by hydrothermal treatment. Commercial activated carbon was treated by HNO3 prior to being coated by the as-synthesized catalyst. The composite was characterized by XPS, XRD, UV-Vis spectrophotometry, IR, TEM, HR-TEM, and BET. The performance of the supported catalysts was evaluated in the degradation of rhodamine B (RhB) in the solution under visible-light irradiation. The results showed that, with the appropriate amount of activated carbon, prepared Fe-C-TiO2/AC catalysts exhibited higher catalytic activities and Fe-C-TiO2/AC system showed the best performance. The photocatalytic degradation efficiency of Fe-C-TiO2/AC was enhanced due to the synergistic effect between AC (adsorption effect) and Fe-C-TiO2 (photocatalysis effect). This facilitated the photocatalytic degradation of RhB by Fe-C-TiO2.

scholarly journals Photocatalytic Degradation of Deoxynivalenol Using Cerium Doped Titanium Dioxide under Ultraviolet Light Irradiation

Toxins ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 481
Author(s):  
Pengzhen He ◽  
Zhiyong Zhao ◽  
Yanglan Tan ◽  
Hengchao E ◽  
Minghui Zuo ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Degradation ◽  
Ultraviolet Light ◽  
Degradation Mechanism ◽  
Sol Gel ◽  
Degradation Pathway ◽  
Pure Tio2 ◽  
Light Irradiation ◽  
Ultraviolet Light Irradiation ◽  
Doped Titanium Dioxide

Deoxynivalenol (DON) is a major mycotoxin with high toxicity that often contaminates grains, foods and feeds. The traditional approaches for DON removal are difficult to meet industry and agriculture demands due to the high stability of the DON molecule. Therefore, there is an urgent need to develop green and effective strategies for DON degradation. In this study, a batch of photocatalytic nanomaterials of cerium (Ce) doped titanium dioxide (TiO2) were successfully prepared by sol-gel method. The catalysts were systematically characterized by XRD, HRTEM, FT-IR, UV-Vis and XPS. The catalyst 0.5Ce-TiO2 showed superior photocatalytic activity for DON degradation in aqueous solution under ultraviolet light irradiation, better than that of traditional photocatalyst pure TiO2, and 96% DON with initial concentration of 5.0 mg/L could be degraded in 4 h. In addition, the two possible degradation intermediate products C5H8O3 and C17H18O6 were identified, the photocatalytic degradation mechanism and degradation pathway were studied. The results indicate that Ce doped TiO2 photocatalyst can be used to reduce DON effectively.

Gallium- and iodine-co-doped titanium dioxide for photocatalytic degradation of 2-chlorophenol in aqueous solution: Role of gallium

2011 ◽  
Vol 257 (8) ◽  
pp. 3427-3432 ◽  
Author(s):  
Shuang Song ◽  
Cheng Wang ◽  
Fangyue Hong ◽  
Zhiqiao He ◽  
Qiaolan Cai ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Titanium Dioxide ◽  
Photocatalytic Degradation ◽  
Doped Titanium Dioxide ◽  
Co Doped

Study on the Synthesis and Photocatalytic Perfomance of Tube shaped Activated Carbon -TiO2 Composite Materials

2020 ◽  
Vol 2 (7) ◽  
pp. 143-150
Author(s):  
Zhifu Wu
Keyword(s):  
Titanium Dioxide ◽  
Activated Carbon ◽  
Rhodamine B ◽  
Photocatalytic Performance ◽  
Raw Materials ◽  
Phase Particle ◽  
Sol Gel ◽  
Nitrogen Adsorption ◽  
X Ray Diffraction ◽  
Photocatalytic Material

Titanium dioxide semiconductor material is one of the earliest photocatalysts with stable and reliable properties, but its quantum efficiency is relatively low. In order to improve the photocatalytic performance of titanium dioxide, the activated carbon tubular-titanium dioxide composite photocatalytic material was synthesized by sol-gel method with n-butyl titanate and activated carbon as main raw materials in the system of isopropyl alcohol and glacial acetic acid. X-ray diffraction (XRD), scanning electron microscope (SEM) and nitrogen adsorption were used to characterize the phase, particle size and adsorption performance of the photocatalyst. The photocatalytic performance of the synthesized material was tested by using rhodamine B, a simulated pollutant. The results show that rhodamine B decomposition rate can reach 100% under UV irradiation for 140 minutes. The conclusion is that the photocatalytic performance of the activated carbon tube interspersed with titanium dioxide composite was significantly improved.

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