Improved visible-light activities for degrading pollutants on TiO2/g-C3N4 nanocomposites by decorating SPR Au nanoparticles and 2,4-dichlorophenol decomposition path

Zada, Amir; Qu, Yang; Ali, Sharafat; Sun, Ning; Lu, Hongwei; Yan, Rui; Zhang, Xuliang; Jing, Liqiang

doi:10.1016/j.jhazmat.2017.09.005

Cited by 193 publications

(53 citation statements)

References 43 publications

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“…This means that •OH radicals are the major contributing species toward the oxidation of MB. The formation of these •OH radicals can be explained by the following equations: ZnFO + hν → h + + e − H 2 O + h + → •OH + H + O 2 + e − → •O 2 − 2•O 2 − + 2H + → O 2 + H 2 O 2 H 2 O 2 → 2•OH MB + •OH → Degradation products …”

Section: Resultsmentioning

confidence: 99%

Enhanced photodegradation of methylene blue with alkaline and transition‐metal ferrite nanophotocatalysts under direct sun light irradiation

Ali

Zada

Zahid

et al. 2018

J Chinese Chemical Soc

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It is highly desired to synthesize low‐cost photocatalysts for the degradation of colored dyes to safeguard our environment for the future generations. Here, we report an extremely efficient and low‐cost synthesis of alkaline earth and transition‐metal ferrite photocatalysts (MgFe2O4, CaFe2O4, BaFe12O19, CuFe2O4, and ZnFe2O4) from their chloride salts and their applications for the degradation of methylene blue (MB) dye under UV–visible and direct sunlight irradiation. The as‐prepared photocatalysts displayed enhanced photoactivities under both conditions of irradiation. After calcination at 600°C, the photocatalytic degradation increased significantly, and 96 and 85% MB was removed with ZnFe2O4 under UV–visible and direct sunlight irradiation, respectively. Moreover, large amounts of hydroxyl free radicals were produced under both irradiation conditions, which participated in the degradation of MB. The enhanced photodegradation activities of these photocatalysts are attributed to their extended visible light absorption and low bandgaps. This work will provide a feasible route to the synthesis of efficient and low‐cost photocatalysts to utilize sunlight for environmental remediation.

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Section: Resultsmentioning

confidence: 99%

Enhanced photodegradation of methylene blue with alkaline and transition‐metal ferrite nanophotocatalysts under direct sun light irradiation

Ali

Zada

Zahid

et al. 2018

J Chinese Chemical Soc

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“…The phototcatalytic degradation of 2,4-dichlorophenol (2,4-DCP) and bisphenol A (BPA) has been done by using the nanocomposites TiO 2 /g-C 3 N 4 (CN) decorated by Au assisted under visible light irradiation [33]. In the field of sensing hazardous elements with TiO 2 as a photocatalyst, the photoelectrochemistry detection of ochratoxin A was done with the nano composites adsorption of TiO 2 on to the pores and it also provides the insitu growth of Ag 2 S[1], With branched TiO 2 nanorods(B-TiO 2 NRs) modified with imprinted polymer (MIP), the detection of chlropyris (CPF) was done efficiently based on photo electrochemistry detection and sensing strategy.…”

Section: Application Of Tiomentioning

confidence: 99%

Nano Titanium Dioxide -An Effective Photocatalyst for Emerging Applications

Raja¹,

Geetha²,

Ilavarasi³

2019

IJITEE

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Titanium dioxide (TiO2 ) is a widely studied material and exists in three major crystal structures: rutile, brookite and anatase. Due to its advantages in high chemical and thermal stability, non-toxicity, high catalytic activity, resistance to corrosion, and high reactivity under ultraviolet light (<387 nm),it can be used in many applications such as photo catalysis, photovoltaics, sensors, hydrogen generators batteries, self-cleaning, electrochromic devices and also used in some biomedical application for site specific drug delivery . These applications in various fields depends not only on the properties of the TiO2 material but also it involves in modifying TiO2 structure and doping of other element on it which will show adverse impact in application of TiO2 with the surrounding environment. In this review, we are discussing about the synthesis, properties, and applications of titanium dioxide nanoparticle (TiO2 NP) in various fields.

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“…However, TiO 2 alone can only absorb ultraviolet light (only 4% of solar energy), even if the light absorption properties of TiO 2 are improved. In addition, higher photo-generated charge recombination efficiency also affects its photocatalytic activity [17].…”

Section: Introductionmentioning

confidence: 99%

Noble Metal-Free TiO2-Coated Carbon Nitride Layers for Enhanced Visible Light-Driven Photocatalysis

2020

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Composites of g-C3N4/TiO2 were one-step prepared using electron impact with dielectric barrier discharge (DBD) plasma as the electron source. Due to the low operation temperature, TiO2 by the plasma method shows higher specific surface area and smaller particle size than that prepared via conventional calcination. Most interestingly, electron impact produces more oxygen vacancy on TiO2, which facilitates the recombination and formation of heterostructure of g-C3N4/TiO2. The composites have higher light absorption capacity and lower charge recombination efficiency. g-C3N4/TiO2 by plasma can produce hydrogen at a rate of 219.9 μmol·g−1·h−1 and completely degrade Rhodamine B (20mg·L−1) in two hours. Its hydrogen production rates were 3 and 1.5 times higher than that by calcination and pure g-C3N4, respectively. Electron impact, ozone and oxygen radical also play key roles in plasma preparation. Plasma has unique advantages in metal oxides defect engineering and the preparation of heterostructured composites with prospective applications as photocatalysts for pollutant degradation and water splitting.

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Improved visible-light activities for degrading pollutants on TiO2/g-C3N4 nanocomposites by decorating SPR Au nanoparticles and 2,4-dichlorophenol decomposition path

Cited by 193 publications

References 43 publications

Enhanced photodegradation of methylene blue with alkaline and transition‐metal ferrite nanophotocatalysts under direct sun light irradiation

Enhanced photodegradation of methylene blue with alkaline and transition‐metal ferrite nanophotocatalysts under direct sun light irradiation

Nano Titanium Dioxide -An Effective Photocatalyst for Emerging Applications

Noble Metal-Free TiO2-Coated Carbon Nitride Layers for Enhanced Visible Light-Driven Photocatalysis

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