A review on carbon-based materials for heterogeneous sonocatalysis: Fundamentals, properties and applications

Gholami, Peyman; Khataee, Alireza; Soltani, Reza Darvishi Cheshmeh; Bhatnagar, Amit

doi:10.1016/j.ultsonch.2019.104681

Cited by 104 publications

(48 citation statements)

References 129 publications

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“…In our control studies ( Figure 7 b), we found that only with room light, no reaction was observed, whereas only US and dark conditions yielded slight (4%) degradation, indicating that ROS generation occurs because of water splitting by US as it has been reported that in the presence of US, water can undergo splitting because of CBI. 52 The generated electrons in the CB would react with dissolved oxygen to generate the superoxide radical anion (O 2 •– ) ( eq 4 ). Subsequently, the superoxide radical anion can react with H + to generate the hypoperoxyl radical (HO 2 • ), which can further form hydrogen peroxide (H 2 O 2 ) upon dimerization.…”

Section: Resultsmentioning

confidence: 99%

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Synergistic Effects of Carbon Dots and Palladium Nanoparticles Enhance the Sonocatalytic Performance for Rhodamine B Degradation in the Absence of Light

et al. 2020

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Carbon dot (CD) and palladium nanoparticle (Pd NP) composites are semiconducting materials having tremendous applications in catalysis with suitable band gaps. However, their combination with a suitable polymer matrix in sonophotocatalysis has not been explored. Herein, we have synthesized and characterized a new nanohybrid catalyst from a polyamide cross-linked CD-polymer and subsequent deposition of Pd NPs. A sonocatalytic activity of 99% rhodamine B dye degradation was achieved in mere 5 min in the dark. A model catalyst replacing CDs with benzene and other control studies revealed that the synergistic effects of CDs and Pd NPs enhance the sonocatalytic activity of the nanohybrid catalyst. Interestingly, visible light did not influence the activity significantly. Mechanistic investigations suggest that generation of reactive oxygen species on the surface of the CD–polymer initiated by ultrasound, which is further facilitated by Pd NPs, is the key for remarkable catalytic activity (a rate constant of 0.99 min –1 ). Recyclable heterogeneous catalysts under ambient conditions are promising for exploring sono-assisted dark catalysis for several avenues.

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Section: Resultsmentioning

confidence: 99%

“…The origin of enhanced nanohybrid sonocatalytic activities comes from the efficient separation of electron–hole pairs, which either directly react water with h + or contribute to forming active species, hydroxyl radicals ( • OH), and superoxide radicals (O 2 •– ) through the reduction of the electron. 22 , 52 …”

Section: Resultsmentioning

confidence: 99%

Synergistic Effects of Carbon Dots and Palladium Nanoparticles Enhance the Sonocatalytic Performance for Rhodamine B Degradation in the Absence of Light

et al. 2020

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“…[55] Ultrasonic waves create Image copied with permission from ref. [65] high temperatures and pressures inside the bubbles, resulting in the breakdown of water molecules and the production of hydroxyl radicals. [56] In general, such advanced oxidation processes require no reaction, thereby reducing the costs.…”

Section: Sonocatalysismentioning

confidence: 99%

Sonophotocatalytic Degradation of Pollutants by ZnO‐Based Catalysts: A Review

Asli

Taghizadeh

2020

ChemistrySelect

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Sonophotocatalyticprocess (SPC) is the simultaneous use of ultraviolet radiation (UV), ultrasonic radiation (US), and semiconductor materials as photocatalysts and sonocatalysts for the generation of reactive oxygen species (ROS). These free radicals oxidize several pollutant molecules in various industrial wastewaters. The objective of this review was to compare the papers published on the sonophotocatalytic degradation of different pollutants in the presence of zinc oxide-based particles. The elimination rate of contaminants in this process was compared with individual methods such as sonocatalysis and photo-catalysis. The experimental conditions, including the catalyst dosage, the pollutant concentration, the radiation power, the applied frequency, the initial pH, and the reaction time were further investigated. ZnO nanoparticles are well-known as semiconductor materials with good sonophotocatalytic activity. In general, sonophotocatalysis is emerging as one of the most efficient treatment techniques for degrading the recalcitrant pollutants in the aqueous medium. It is expected that these technologies result in more progressive research with the most degradation efficiency.

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“…Carbon-based structures including activated carbons (ACs) are versatile and effective materials that have been widely used in many applications, including catalysts and catalyst supports, adsorbents in chemical recovery operations, industrial purification, air purification, removal of organic and inorganic pollutants from water, anti-corrosion coatings, and enhanced oil recovery. [1][2][3][4][5] Besides these applications, due to their large specific surface area (SSA) and good electrical conductivity, ACs are also quite popular as electrode materials in various electrochemical applications such as electrochemical energy storage and sensors. [6][7][8][9][10] Carbonaceous materials are practically applicable from deep-sea to airspace applications, i. e., almost everywhere.…”

Section: Introductionmentioning

confidence: 99%

“…Large-scale applications of carbonaceous materials are possible on account of their highly active surface area, welldeveloped pore structure, variety of surface functional groups, high degree of surface reactivity, high electrical conductivity, and good mechanical strength. [1,3,[6][7][8] The world demand for carbonaceous materials is rapidly increasing due to their unique properties and extensive utility in various areas. However, the high cost of commercial carbonaceous materials limits their large-scale applications.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Utilization of Jute‐Derived Carbon: A Short Review

Aziz

Shah

Kashem³

2020

The Chemical Record

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This article summarizes the preparation and applications of carbon derived from jute sticks and fibers that are low‐cost, widely available, renewable, and environmentally friendly. Both the fibers and sticks are considered ideal candidates of carbon preparation because they are composed of cellulose, hemicelluloses, and lignin, and contain negligible ash content. Various carbon preparation methods including simple pyrolysis, pyrolysis with chemical and physical activations are discussed. The impacts of several parameters including types of activating agents, impregnation ratio, and temperature on their morphology, surface area, pore size, crystallinity, and surface functional groups are also emphasized. Various treatments to endow functionalization for increasing the practical applicability, such as chemical, physical, and physico‐chemical methods, are discussed. In addition, applications of jute‐derived carbon in various practical areas, including energy storage, water treatment, and sensors, are also highlighted in this report. Due to the porous fine structure and a large specific surface area, the jute‐derived carbon could be considered as a powerful candidate material for various industrial applications. Finally, possible future prospects of jute‐derived carbon for various applications are pointed out.

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A review on carbon-based materials for heterogeneous sonocatalysis: Fundamentals, properties and applications

Cited by 104 publications

References 129 publications

Synergistic Effects of Carbon Dots and Palladium Nanoparticles Enhance the Sonocatalytic Performance for Rhodamine B Degradation in the Absence of Light

Synergistic Effects of Carbon Dots and Palladium Nanoparticles Enhance the Sonocatalytic Performance for Rhodamine B Degradation in the Absence of Light

Sonophotocatalytic Degradation of Pollutants by ZnO‐Based Catalysts: A Review

Preparation and Utilization of Jute‐Derived Carbon: A Short Review

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