Journal ArticleDOI
Metal-free carbocatalysis in advanced oxidation reactions
TLDR
This Account showcases the recent contributions to metal-free catalysis in advanced oxidation, including design of nanocarbon catalysts, exploration of intrinsic active sites, and identification of reactive species and reaction pathways, and offers perspectives on carbocatalysis for future environmental applications.Abstract:
ConspectusCatalytic processes have remarkably boosted the rapid industrializations in chemical production, energy conversion, and environmental remediation. As one of the emerging applications of carbocatalysis, metal-free nanocarbons have demonstrated promise as catalysts for green remediation technologies to overcome the poor stability and undesirable metal leaching in metal-based advanced oxidation processes (AOPs). Since our reports of heterogeneous activation of persulfates with low-dimensional nanocarbons, the novel oxidative system has raised tremendous interest for degradation of organic contaminants in wastewater without secondary contamination. In this Account, we showcase our recent contributions to metal-free catalysis in advanced oxidation, including design of nanocarbon catalysts, exploration of intrinsic active sites, and identification of reactive species and reaction pathways, and we offer perspectives on carbocatalysis for future environmental applications.The journey starts with the dis...read more
Citations
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Preparation, modification and environmental application of biochar: A review
Jianlong Wang,Shizong Wang +1 more
TL;DR: In this paper, a review of the preparation, characterization, modification, and especially environmental application of biochar, based on more than 200 papers published in recent 10 year, to provide an overview of Biochar with a particular on its environmental application.
Journal ArticleDOI
Catalytic removal of aqueous contaminants on N-doped graphitic biochars: inherent roles of adsorption and nonradical mechanisms.
TL;DR: This study not only provides robust and cheap carbonaceous materials for environmental remediation but also enables the first insight into the graphitic biochar-based nonradical catalysis.
Journal ArticleDOI
Iron-mediated activation of persulfate and peroxymonosulfate in both homogeneous and heterogeneous ways: A review
TL;DR: In this article, the up-to-date research progresses of iron-mediated activation of persulfate and peroxymonosulfate mediated by these iron-based species in both homogeneous and heterogeneous ways are summarized and discussed.
Journal ArticleDOI
New Strategies for Novel MOF-Derived Carbon Materials Based on Nanoarchitectures
Chaohai Wang,Chaohai Wang,Jeonghun Kim,Jeonghun Kim,Jing Tang,Minjun Kim,Hyunsoo Lim,Victor Malgras,Jungmok You,Qiang Xu,Jiansheng Li,Yusuke Yamauchi,Yusuke Yamauchi +12 more
TL;DR: In this article, metal-organic framework (MOF)-derived carbon materials (CMs) have drawn great interest in many fields of application, such as energy storage and conversion, environmental remediation, and catalysis.
Journal ArticleDOI
The Intrinsic Nature of Persulfate Activation and N-Doping in Carbocatalysis.
TL;DR: It is illustrated that the roles of nitrogen species in CNT-based persulfate systems are intrinsically different, which provides new insights into the intrinsic roles of heteroatom doping in nanocarbons for persulfates activation and unveils the principles for rational design of reaction-oriented carbocatalysts for pers fulfilment in advanced oxidation processes.
References
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Journal ArticleDOI
Activation of persulfates by carbon nanotubes: Oxidation of organic compounds by nonradical mechanism
TL;DR: Carbon nanotubes (CNTs) have been found to activate persulfates (i.e., peroxymonosulfate and peroxydisulfate) into reactive species that are capable of oxidizing organic compounds in water.
Journal ArticleDOI
Activation of Persulfates by Graphitized Nanodiamonds for Removal of Organic Compounds
Hongshin Lee,Hyoung Il Kim,Seunghyun Weon,Wonyong Choi,Yu Sik Hwang,Jiwon Seo,Chang Ha Lee,Jae-Hong Kim +7 more
TL;DR: Results indicate that radical intermediates such as sulfate radical anion and hydroxyl radical are not majorly responsible for this persulfate-driven oxidation of organic compounds, and suggest that G-ND plays a critical role in mediating facile electron transfer from phenol to persulfates.
Journal ArticleDOI
Nitrogen-Doped Reduced Graphene Oxide as a Bifunctional Material for Removing Bisphenols: Synergistic Effect between Adsorption and Catalysis.
TL;DR: A mechanism study indicated that the adsorption enriched the pollutant, and the catalytically generated sulfate radicals rapidly degrade the adsorbent, accelerating in turn the advertisersorption of residual pollutant.
Journal ArticleDOI
Identification and Regulation of Active Sites on Nanodiamonds: Establishing a Highly Efficient Catalytic System for Oxidation of Organic Contaminants
Penghui Shao,Jiayu Tian,Feng Yang,Xiaoguang Duan,Shanshan Gao,Wenxin Shi,Xubiao Luo,Fuyi Cui,Shenglian Luo,Shaobin Wang +9 more
TL;DR: In this article, an annealing strategy is developed to accurately regulate the content of ketonic carbonyl groups on nanodiamonds; meanwhile other structural characteristics of the diamond remain unchanged.
Journal ArticleDOI
Selective Degradation of Organic Pollutants Using an Efficient Metal-free Catalyst Derived from Carbonized Polypyrrole via Peroxymonosulfate Activation
Peidong Hu,Hanrui Su,Zhenyu Chen,Chunyang Yu,Qilin Li,Baoxue Zhou,Pedro J. J. Alvarez,Mingce Long +7 more
TL;DR: A novel nitrogen-doped carbonaceous nanosphere catalyst is developed by carbonization of polypyrrole, which was prepared through a scalable chemical oxidative polymerization and exhibited the best catalytic performance for PMS activation.
Related Papers (5)
Generation of sulfate radical through heterogeneous catalysis for organic contaminants removal: Current development, challenges and prospects
Activation of persulfate (PS) and peroxymonosulfate (PMS) and application for the degradation of emerging contaminants
Jianlong Wang,Shizong Wang +1 more