High surface area g-C3N4 and g-C3N4-TiO2 photocatalytic activity under UV and Visible light: Impact of individual component

2021 ◽  
Vol 9 (4) ◽  
pp. 105587
Author(s):  
Sweta Gahlot ◽  
Frederic Dappozze ◽  
Shashank Mishra ◽  
Chantal Guillard
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Surface Area ◽  
Individual Component ◽  
High Surface ◽  
High Surface Area

Novel core–shell structured BiVO4 hollow spheres with an ultra-high surface area as visible-light-driven catalyst

CrystEngComm ◽  
2014 ◽  
Vol 16 (27) ◽  
pp. 6059-6065 ◽  
Author(s):  
Yang Lu ◽  
Yong-Song Luo ◽  
Hong-Mei Xiao ◽  
Shao-Yun Fu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Surface Area ◽  
High Surface ◽  
Hollow Spheres ◽  
High Surface Area ◽  
Core Shell ◽  
Hydrothermal Route ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven

Novel core–shell-structured BiVO4 hollow spheres synthesized via a simple hydrothermal route exhibit an excellent photocatalytic activity.

Sol-Gel Synthesis of N-Doped Mesoporous TiO2 with High Crystallinity and High Visible Light Photocatalytic Activity

2012 ◽  
Vol 217-219 ◽  
pp. 857-861 ◽  
Author(s):  
Xiao Ling Guo ◽  
Xiang Dong Wang ◽  
Feng He
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Surface Area ◽  
Anatase Phase ◽  
High Surface ◽  
Sol Gel ◽  
High Surface Area ◽  
Weight Ratio ◽  
Mesoporous Tio2 ◽  
Vis Spectroscopy

N-doped mesoporous TiO2 with high surface area and crystallinity were synthesized by sol-gel method using polyacrylamide (PAM) and polyethylene glycol (PEG) as the complex templates. The resulting materials were characterized by XRD, TEM, N2 adsorption-desorption, and UV-Vis spectroscopy. It is found that when the weight ratio of PAM and PEG is 1:4, the sample, prepared at 600 °C in nitrogen and at 500 °C in air, is anatase phase and has high surface area and crystallinity. The particle size and pore size of the sample are about 10 nm and 17 nm respectively. Compared with that of the undoped mesoporous TiO2, the absorption band edges of N-doped samples exhibit an evident red-shift. The results of the photocatalytic degradation of methyl orange (MO) show that N-doped sample appears to have higher photocatalytic activity under visible light than undoped sample.

scholarly journals Synthesis of Superior Visible-Light-Driven Nanophotocatalyst Using High Surface Area TiO2 Nanoparticles Decorated with CuxO Particles

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 872
Author(s):  
Nezar H. Khdary ◽  
Waleed S. Alkhuraiji ◽  
Tamil S. Sakthivel ◽  
Duaa N. Khdary ◽  
Mohamed Abdel Salam ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Tio2 Nanoparticles ◽  
Surface Area ◽  
Organic Pollutants ◽  
High Surface ◽  
High Surface Area ◽  
Chemically Modified ◽  
Hydroxyl Free Radical ◽  
Visible Light Driven

This work provides an alternate unique simple methodology to design and synthesize chemically modified nanophotocatalyst based on high surface area TiO2 nanoparticles that can be used efficiently for the photodegradation of organic pollutants under normal visible light rather than complicated UV irradiation. In this study, dual visible light and UV-driven nanophotocatalysts were synthesized via wet chemistry procedures using high surface area TiO2 nanoparticles functionalized with (3-Aminopropyl) trimethoxysilane and attached chemically to the CuXO to improve the charge separation and maintain the non-charge recombination. The successful modification of the TiO2 nanoparticles and the formation of the TiO2-NH2-CuxO nanophotocatalyst were confirmed using different characterization techniques, and the results revealed the synthesis of high surface area TiO2 nanoparticles, and their chemical modification with an amino group and further decoration with copper to produce TiO2-NH2-CuxO nanophotocatalyst. The photocatalytic activity of TiO2 and TiO2-NH2-CuxO nanophotocatalyst were evaluated using methylene blue (MB) dye; as an example of organic pollutants. The resulting TiO2-NH2-CuxO nanophotocatalyst exhibited superior photocatalytic activity for the degradation of MB dye under visible light irradiation, due to the reduction in the energy bandgap. The degradation of the MB dye using the TiO2-NH2-CuxO nanophotocatalyst was investigated using LC-MS, and the results revealed that the hydroxyl free radical is mainly responsible for the cleavage and the degradation of the MB dye.

Visible light-induced photocatalytic activity of high surface area N-doped two-dimensional (2-D) TiO2 sheets

RSC Advances ◽  
2015 ◽  
Vol 5 (107) ◽  
pp. 88464-88470 ◽  
Author(s):  
A. Nikhil ◽  
G. S. Anjusree ◽  
Shantikumar V. Nair ◽  
A. Sreekumaran Nair
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Visible Light Photocatalysis ◽  
Two Dimensional ◽  
Nitrogen Doped

Nitrogen-doped two-dimensional TiO2 sheets prepared by a titanate route using urea as the precursor for nitrogen for visible light photocatalysis.

scholarly journals Fabrication of CdS/Ti3C2/g-C3N4NS Z-Scheme Composites with Enhanced Visible-Light-Driven Photocatalytic Activity

2021 ◽  
Author(s):  
Ranran Zhang ◽  
Jiaying Jin ◽  
Lumeng Jia ◽  
Bo Shi ◽  
Rufen Chen
Keyword(s):  
Photocatalytic Activity ◽  
Hydrothermal Synthesis ◽  
Visible Light ◽  
Surface Area ◽  
High Efficiency ◽  
High Surface ◽  
High Surface Area ◽  
Photocatalytic Properties ◽  
Visible Light Driven ◽  
Redox Ability

Abstract The Ti3C2 and g-C3N4NS were obtained first, and the CdS/Ti3C2/g-C3N4NS Z-scheme composites were prepared via a facile hydrothermal synthesis and their photocatalytic properties were investigated. The g-C3N4NS with a high surface area displayed higher adsorption and degradation capacity. Compared with Ti3C2/g-C3N4NS and CdS, the optimal ternary composites exhibited significantly enhanced visible light (vis) photocatalytic activity. The Fabrication of CdS/Ti3C2/g-C3N4NS Z-scheme heterostructure not only enhanced vis absorption, but also improved the separation ability of the photoinduced e−-h+ pairs and the redox ability of the catalyst, thereby leading to the improvement of visible-light-driven photocatalytic activity. This finding provides new insights into the construction of high efficiency Z-scheme heterostructure photocatalyst.

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