Photo-Fenton degradation of phenol by CdS/rGO/Fe2+ at natural pH with in situ-generated H2O2

Jiang, Zhenying; Wang, Lingzhi; Lei, Juying; Liu, Yongdi; Zhang, Jinlong

doi:10.1016/j.apcatb.2018.09.049

Cited by 201 publications

(59 citation statements)

References 43 publications

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“…[98] Under simulated sunlight irradiation, graphene oxide (GO) efficiently produced millimolar levels of H 2 O 2 .S imilar to GO,c arbon dots (CDs) can also serve as photocatalysts for the production of H 2 O 2 .G ogoi and Karak [99] employed water-soluble hyperbranched polyurethane (WPA) as as upport for acarbon dot photocatalyst, which was used for the solar-driven production Carbon materials can be incorporated with other non-TiO 2 semiconductors.T hakur et al [100] reported ah eterogeneous CdS-reduced graphene oxide (rGO) photocatalyst for the sustainable production of H 2 O 2 from H 2 Oa nd O 2 under sunlight. Thea mount of H 2 O 2 produced (128 mm)o ver the CdS/rGO hybrid photocatalyst was almost 5-times higher than that produced by CdS nanoparticles (27 mm)a fter irradiation with sunlight for 12 h. Similarly,J iang et al [101] tested aC dS/rGO composite for the generation of H 2 O 2 . Under irradiation with visible light, the amount of H 2 O 2 produced reached 580.68 mmol L À1 after 2hreaction.…”

Section: Hybridization With Organic Semiconductorsmentioning

confidence: 97%

Production of Hydrogen Peroxide by Photocatalytic Processes

2020

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Hydrogen peroxide (H2O2) has received increasing attention because it is not only a mild and environmentally friendly oxidant for organic synthesis and environmental remediation but also a promising new liquid fuel. The production of H2O2 by photocatalysis is a sustainable process, since it uses water and oxygen as the source materials and solar light as the energy. Encouraging processes have been developed in the last decade for the photocatalytic production of H2O2. In this Review we summarize research progress in the development of processes for the photocatalytic production of H2O2. After a brief introduction emphasizing the superiorities of the photocatalytic generation of H2O2, the basic principles of establishing an efficient photocatalytic system for generating H2O2 are discussed, highlighting the advanced photocatalysts used. This Review is concluded by a brief summary and outlook for future advances in this emerging research field.

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Section: Hybridization With Organic Semiconductorsmentioning

confidence: 97%

Production of Hydrogen Peroxide by Photocatalytic Processes

2020

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“…To quantitatively analyze the phase component of different Bi 2 O 3 samples, the content of β-Bi 2 O 3 and α -Bi 2 O 3 (W β , W α ) was calculated by the RIR method based on the XRD patterns, which can be estimated using the following formula [Eqs. (2) and (3): [19]…”

Section: Resultsmentioning

confidence: 99%

“…As a clean and efficient technology, photocatalysis plays an more and more active role in the production of solar fuels and removing of environmental pollutants. [1][2][3][4] In case of a semiconductor photocatalyst, its photocatalytic efficiency is principally determined by the efficiency of the light harvesting, the photogenerated hole-electron separation, and the surface catalytic reaction. [5][6][7] Particularly, photogenerated charge separation is the key and bottleneck among three basic steps.…”

Section: Introductionmentioning

confidence: 99%

Self‐templated Constructing of Heterophase Junction into Hierarchical Porous Structure of Semiconductors for Promoting Photogenerated Charge Separation

Zhang

Liang

et al. 2020

ChemCatChem

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It is well‐known that photogenerated charge separation is the key and bottleneck step to determine the solar energy efficiency in photocatalysis. Although strategies for facilitating spatial charge separation of semiconductor‐based photocatalysts like heterojunctions, especially for heterophase junctions have been recognized as useful and adequate approaches, the original morphology‐tailored structures are always challenging to be maintained during the thermal‐induced phase transformation process. Herein, using a facile self‐templated method, we successfully fabricate heterophase junction into the well‐defined hierarchical porous structure of visible‐light‐responsive semiconductor, bismuth oxide (Bi2O3), without destroying the its unique hierarchical porous morphology. Such organic integration of heterophase junction and hierarchical porous structure are demonstrated to enable highly efficient separation of photogenerated electrons and holes, resulting in a remarkable enhancement in photocatalytic activities. Our work showcases a general concept for developing artificial photocatalyst systems via integrating efficient charge separation path into the unique morphology‐tailoring of semiconductors for highly efficient solar energy conversion.

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“…Solar generative photo-Fenton reactions have demonstrated high performance, achieving a high degree of mineralization as well as a level of performance up to 90% within a short reaction time [122]. The pH of the solution is another important parameter affecting the performance of the photo-Fenton process, as it strongly influences the complex formation or leaching of the catalyst [123].…”

Section: Fenton Reactionmentioning

confidence: 99%

Catalytic Oxidation Process for the Degradation of Synthetic Dyes: An Overview

Javaid

Qazi

2019

IJERPH

288

101

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Dyes are used in various industries as coloring agents. The discharge of dyes, specifically synthetic dyes, in wastewater represents a serious environmental problem and causes public health concerns. The implementation of regulations for wastewater discharge has forced research towards either the development of new processes or the improvement of available techniques to attain efficient degradation of dyes. Catalytic oxidation is one of the advanced oxidation processes (AOPs), based on the active radicals produced during the reaction in the presence of a catalyst. This paper reviews the problems of dyes and hydroxyl radical-based oxidation processes, including Fenton’s process, non-iron metal catalysts, and the application of thin metal catalyst-coated tubular reactors in detail. In addition, the sulfate radical-based catalytic oxidation technique has also been described. This study also includes the effects of various operating parameters such as pH, temperature, the concentration of the oxidant, the initial concentration of dyes, and reaction time on the catalytic decomposition of dyes. Moreover, this paper analyzes the recent studies on catalytic oxidation processes. From the present study, it can be concluded that catalytic oxidation processes are very active and environmentally friendly methods for dye removal.

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Photo-Fenton degradation of phenol by CdS/rGO/Fe2+ at natural pH with in situ-generated H2O2

Cited by 201 publications

References 43 publications

Production of Hydrogen Peroxide by Photocatalytic Processes

Production of Hydrogen Peroxide by Photocatalytic Processes

Self‐templated Constructing of Heterophase Junction into Hierarchical Porous Structure of Semiconductors for Promoting Photogenerated Charge Separation

Catalytic Oxidation Process for the Degradation of Synthetic Dyes: An Overview

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