Photocatalytic performance of chitosan tethered magnetic Fe2O3-like (3D/2D) hybrid for the dynamic removal of anionic dyes: Degradation and mechanistic pathways

Ternary AgCl/Ag/Bi2O2CO3 was designed as novel indirect Z-scheme photocatalysts via in situ precipitation and subsequent photo-reduction process. The morphology, structure, chemical composition, optical and photoelectrochemical properties were characterized via various methods. The photocatalyst showed highly improved photocatalytic performance for Tetracycline (TC), Rhodamine B (RhB) and Carbamazepine (CBZ) degradation. The enhanced photocatalytic performance was mainly due to the formation of ternary AgCl/Ag/Bi2O2CO3 with indirect Z-scheme structures. The possible photocatalytic mechanism was also discussed based on the trapping experiment and band structures of the photocatalyst.

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A Comparative Study of Photodegradation Behavior Sodium Niobate Nanowires and Microcubes

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.861.221 ◽

2020 ◽

Vol 861 ◽

pp. 221-227

Author(s):

Chang Xu Yan ◽

Bo Li ◽

Jin Wang

Keyword(s):

Catalytic Activity ◽

Rhodamine B ◽

Phase Structure ◽

Photocatalytic Performance ◽

Ferroelectric Phase ◽

Organic Dyes ◽

Sodium Niobate ◽

Photo Catalytic Activity ◽

First Order ◽

Dyes Degradation

Sodium niobate catalysts with different morphologies of nanowires and microcubes have been prepared by hydrothermal method. The photocatalytic performance of NaNbO3 nanowires and microcubes was evaluated by degradation of rhodamine B (RhB) and cationic red X-GRL (CRX). The photodegradation reaction of organic dyes is shown to be kinetically first-order. The as-prepared NaNbO3 nanowires exhibit higher photo-catalytic activity for organic dyes degradation than NaNbO3 microcubes, which is attributed to the larger specific surface area and ferroelectric phase structure.

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Synthesis of flower-like CuS/graphene aerogels for dye wastewater treatment

Functional Materials Letters ◽

10.1142/s1793604719500024 ◽

2019 ◽

Vol 12 (02) ◽

pp. 1950002 ◽

Cited By ~ 3

Author(s):

Tingwei Cai ◽

Ying Ding ◽

Lihui Xu

Keyword(s):

Methylene Blue ◽

Wastewater Treatment ◽

Methyl Orange ◽

Photocatalytic Performance ◽

Solvothermal Method ◽

Dye Wastewater ◽

Graphene Aerogels ◽

Photoelectric Properties ◽

Degradation Ratio ◽

Dyes Degradation

A novel visible-light flower-like CuS/graphene aerogels (CuS/GAs) photocatalyst has been synthesized via two-step solvothermal method. The CuS/GAs show outstanding synergies of adsorption and photocatalysis for anionic–cationic dyes degradation, which is attributed to unique network structure and excellent photoelectric properties of GAs. The high degradation ratio of Methyl orange and Methylene blue by synergy are 92% and 99.36%, which are about 4.1 and 3.2 times of that for pure CuS. The flower-like CuS/graphene aerogels resolve the low adsorption saturation problem of GAs and improve the photocatalytic performance of CuS, indicating CuS/GAs could be a promising photocatalyst for wastewater treatment.

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