Supporting carbon quantum dots on NH2-MIL-125 for enhanced photocatalytic degradation of organic pollutants under a broad spectrum irradiation

Wang, Qingjuan; Wang, Guanlong; Liang, Xiaofei; Dong, Xiaoli; Zhang, Xiufang

doi:10.1016/j.apsusc.2018.10.165

Cited by 51 publications

(39 citation statements)

References 40 publications

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“…The applicability of the approach was valid as it provided a significantly high value of regression coefficient R 2 [48]. N-CQD 30 min (AB, AR), 90 min (E-Y, MB), 0 min (EBT, MO) [191] CQDs/TiO 2 95 min (MB) [192] ZSH@CQDs 70.4 % (RhB) [193] CQDs/NH 2 -MIL-125 100 % (RhB) [194] CQDs/La 2 Ti 2 O 7 99 % (RhB) [195] NCDs/BiVO 4 100 % (RhB), 90 % (tetracycline) [196] rPET/MWNT/CQD 98 % (MB) [199] Clay-carbon SBE@C 0.114 TCH [mmol g -1…”

Section: Carbon Nanotubesmentioning

confidence: 96%

“…The photocatalytic activity of CQDs in degradation of organic pollutants showed an increasing trend on supporting them at metal organic framework structures (NH 2 -MIL-125) [194]. The photocatalytic activity of metal organic framework structures-supported CQDs (CQDs/NH 2 -MIL-125) was evaluated by studying the decomposition of RhB solution (10 mg L -1 ) at 90°C using UV irradiation, resulting in almost 100 % RhB removal within 120 min.…”

Section: Carbon Quantum Dotsmentioning

confidence: 99%

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Carbon Nanomaterials for Wastewater Treatment

et al. 2021

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The research progress made in recent years in removal of organic-inorganic pollutants from wastewater using various types of carbon materials as adsorbents such as carbon nanotubes, carbon nanofibers, graphenes, graphitic carbon nitride, fullerene, activated carbon spheres, and carbon quantum dots is reviewed. These carbon nanomaterials with hierarchical structures are efficient and economical adsorbents. The techniques of metal impregnation and doping help to control the porosity and surface area of nanomaterials. Electrostatic forces, p-p and p-e interactions, van der Waals weak forces, and oxygen-containing groups are considered responsible for the removal of pollutants from wastewater. The carbon nanomaterial-based photocatalysts are applied successfully in decomposition of persistent dyes under visible light. Fe 3 O 4 magnetic material is employed as recyclable adsorbent after treatment of wastewater. Freundlich and Langmuir models are found more suitable to calculate the adsorption efficiency and adsorption kinetics of pollutants. Criteria and properties of carbon nanomaterials are discussed that might play a significant role in remediation of wastewater.

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Section: Carbon Nanotubesmentioning

confidence: 96%

Section: Carbon Quantum Dotsmentioning

confidence: 99%

Carbon Nanomaterials for Wastewater Treatment

et al. 2021

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“…CQDs were also supported on Metal-Organic Frameworks (MOFs), as in particular was presented by Wang and co-workers, who used a MIL-125(Ti) framework functionalized with -NH 2 groups as support [ 102 ]. The obtained composite with the optimum CQDs amount of 1 wt.%, referred to as CQDs/NH2-MIL-125, showed an elevated photodecomposition efficiency against PhB under different light irradiation.…”

Section: Photo- and Sono-catalytic Selective Oxidation Of Hmf And Dec...mentioning

confidence: 99%

Carbon-Based Nanocatalysts (CnCs) for Biomass Valorization and Hazardous Organics Remediation

et al. 2022

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The continuous increase of the demand in merchandise and fuels augments the need of modern approaches for the mass-production of renewable chemicals derived from abundant feedstocks, like biomass, as well as for the water and soil remediation pollution resulting from the anthropogenic discharge of organic compounds. Towards these directions and within the concept of circular (bio)economy, the development of efficient and sustainable catalytic processes is of paramount importance. Within this context, the design of novel catalysts play a key role, with carbon-based nanocatalysts (CnCs) representing one of the most promising class of materials. In this review, a wide range of CnCs utilized for biomass valorization towards valuable chemicals production, and for environmental remediation applications are summarized and discussed. Emphasis is given in particular on the catalytic production of 5-hydroxymethylfurfural (5-HMF) from cellulose or starch-rich food waste, the hydrogenolysis of lignin towards high bio-oil yields enriched predominately in alkyl and oxygenated phenolic monomers, the photocatalytic, sonocatalytic or sonophotocatalytic selective partial oxidation of 5-HMF to 2,5-diformylfuran (DFF) and the decomposition of organic pollutants in aqueous matrixes. The carbonaceous materials were utilized as stand-alone catalysts or as supports of (nano)metals are various types of activated micro/mesoporous carbons, graphene/graphite and the chemically modified counterparts like graphite oxide and reduced graphite oxide, carbon nanotubes, carbon quantum dots, graphitic carbon nitride, and fullerenes.

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Section: Mof Composites For Adsorption and Photocatalytic Degradationmentioning

confidence: 99%

“…This is because the incorporated semi-conductor materials help to facilitate electron transfer in the MOF, resulting into effective separation of the photogenerated electron-hole pairs. On this basis, Wang et al (2019) [ 90 ] proposed on the mechanism of enhanced photocatalytic degradation of rhodamine blue dye using CQDs supported on NH 2 -MIL-125(Ti) as follows: CQDs/NH 2 -MIL-125(Ti) + hv → CQDs/NH2-MIL-125 + e − + h + e − + O 2 → O 2 •− O 2 +H 2 O → HO 2 • + OH • HO 2 • + H 2 O → H 2 O 2 + OH • H 2 O 2 → 2OH • h + +OH − → OH • OH • + RhB(dye) → CO 2 + H 2 O h + + RhB(dye) → CO 2 + H 2 O …”

Section: Mofs For Remediation Of Emerging Pollutants In Watermentioning

confidence: 99%

A Critical Review on Metal-Organic Frameworks and Their Composites as Advanced Materials for Adsorption and Photocatalytic Degradation of Emerging Organic Pollutants from Wastewater

et al. 2020

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Water-borne emerging pollutants are among the greatest concern of our modern society. Many of these pollutants are categorized as endocrine disruptors due to their environmental toxicities. They are harmful to humans, aquatic animals, and plants, to the larger extent, destroying the ecosystem. Thus, effective environmental remediations of these pollutants became necessary. Among the various remediation techniques, adsorption and photocatalytic degradation have been single out as the most promising. This review is devoted to the compilations and analysis of the role of metal-organic frameworks (MOFs) and their composites as potential materials for such applications. Emerging organic pollutants, like dyes, herbicides, pesticides, pharmaceutical products, phenols, polycyclic aromatic hydrocarbons, and perfluorinated alkyl substances, have been extensively studied. Important parameters that affect these processes, such as surface area, bandgap, percentage removal, equilibrium time, adsorption capacity, and recyclability, are documented. Finally, we paint the current scenario and challenges that need to be addressed for MOFs and their composites to be exploited for commercial applications.

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Supporting carbon quantum dots on NH2-MIL-125 for enhanced photocatalytic degradation of organic pollutants under a broad spectrum irradiation

Cited by 51 publications

References 40 publications

Carbon Nanomaterials for Wastewater Treatment

Carbon Nanomaterials for Wastewater Treatment

Carbon-Based Nanocatalysts (CnCs) for Biomass Valorization and Hazardous Organics Remediation

A Critical Review on Metal-Organic Frameworks and Their Composites as Advanced Materials for Adsorption and Photocatalytic Degradation of Emerging Organic Pollutants from Wastewater

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