MoO3-adjusted δ-MnO2 nanosheet for catalytic oxidation of Hg0 to Hg2+

Zhao, Haitao; Ezeh, Collins I.; Yin, Shufan; Xie, Zhiyuan; Pang, Cheng Heng; Zheng, Chenghang; Gao, Xiang; Wu, Tao

doi:10.1016/j.apcatb.2019.117829

Cited by 66 publications

(17 citation statements)

References 69 publications

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“…Nitrogen oxides (NO and NO 2 ), as a major gas pollutant, will cause acid rain, smog, and other secondary pollutants. A number of technologies have been developed to control NO emissions, such as selective non-catalytic reduction, , selective catalytic reduction (SCR), − wet scrubbing, absorption, , and so on. ,− Nowadays, NH 3 -SCR is widely used as the commercial technology to remove NO x in stationary and mobile sources. ,− The commercial catalyst used in NH 3 -SCR system is V 2 O 5 /TiO 2 -based catalyst, such as V 2 O 5 –WO 3 /TiO 2 and V 2 O 5 –MoO 3 /TiO. Current vanadium-based catalysts exhibit high deNO x activity at the temperatures above 300 °C, but their activity will rapidly drop with decreasing temperature.…”

Section: Introductionmentioning

confidence: 99%

Partial Oxidation of NO by H₂O₂ and afterward Reduction by NH₃-Selective Catalytic Reduction: An Efficient Method for NO Removal

Xue

Rac

et al. 2020

Ind. Eng. Chem. Res.

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A system for NO removal from flue gas comprising partial oxidation by H 2 O 2 and selective catalytic reduction (SCR) process is proposed in this study. This hybrid system is found to be extremely efficient for deNO x at 200−290 °C. In this system, H 2 O 2 partially oxidizes the NO molecules to NO 2 . The NO/NO 2 mixture reacts fast with NH 3 on the surface of a V 2 O 5 −WO 3 /TiO 2 catalyst. The reaction kinetics was studied by varying reaction temperatures and the H 2 O 2 /NO molar ratio. A V 2 O 5 −WO 3 /TiO 2 SCR catalyst was also filled in the oxidation reactor, but it hardly changes the oxidation rate. The downstream SCR reaction was found to be significantly upgraded by the preoxidation process, which elevates the NO x reduction rate from 20% (without preoxidation) to more than 60% (with preoxidation).

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Section: Introductionmentioning

confidence: 99%

Partial Oxidation of NO by H₂O₂ and afterward Reduction by NH₃-Selective Catalytic Reduction: An Efficient Method for NO Removal

Xue

Rac

et al. 2020

Ind. Eng. Chem. Res.

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“…CO 2 is well known as a major greenhouse gas [187]; thus, efforts are continuously attempted to reduce its emissions by converting it to useful products such as graphene.…”

Section: Solid Comentioning

confidence: 99%

Synthesis of graphene: Potential carbon precursors and approaches

Yan

Nashath

Chen

et al. 2020

Nanotechnology Reviews

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106

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Graphene is an advanced carbon functional material with inherent unique properties that make it suitable for a wide range of applications. It can be synthesized through either the top–down approach involving delamination of graphitic materials or the bottom–up approach involving graphene assembly from smaller building units. Common top–down approaches are exfoliation and reduction while bottom–up approaches include chemical vapour deposition, epitaxial growth, and pyrolysis. A range of materials have been successfully used as precursors in various synthesis methods to derive graphene. This review analyses and discusses the suitability of conventional, plant- and animal-derived, chemical, and fossil precursors for graphene synthesis. Together with its associated technical feasibility and economic and environmental impacts, the quality of resultant graphene is critically assessed and discussed. After evaluating the parameters mentioned above, the most appropriate synthesis method for each precursor is identified. While graphite is currently the most common precursor for graphene synthesis, several other precursors have the potential to synthesize graphene of comparable, if not better, quality and yield. Thus, this review provides an overview and insights into identifying the potential of various carbon precursors for large-scale and commercial production of fit-for-purpose graphene for specific applications.

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“…11 Orange II concentration at different conditions [130] easily reduced on the surface of GO. The defect sites which are presented in stacked layers also act as good anchoring sites for well-dispersed Fe nanoparticles [146] and provide remarkable catalytic properties and stability [145,147]. According to Zhao et al [148], the oxygen-containing groups on the surface result like the acidic surface of GO and to increase the conversion of synthesis gas the hightemperature treatment is usually applied to reduce the GO and further enhance the FTS reaction.…”

Section: Graphene-based Iron Catalystmentioning

confidence: 99%

A recent trend: application of graphene in catalysis

et al. 2020

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Graphene, an allotrope of carbon in 2D structure, has revolutionised research, development and application in various disciplines since its successful isolation 16 years ago. The single layer of sp 2 -hybridised carbon atoms brings with it a string of unrivalled characteristics at a fraction of the price of its competitors, including platinum, gold and silver. More recently, there has been a growing trend in the application of graphene in catalysis, either as metal-free catalysts, composite catalysts or as catalyst supports. The unique and extraordinary properties of graphene have rendered it useful in increasing the reactivity and selectivity of some reactions. Owing to its large surface area, outstanding adsorptivity and high compatibility with various functional groups, graphene is able to provide a whole new level of possibilities and flexibilities to design and synthesise fit-for-purpose graphene-based catalysts for specific applications. This review is focussed on the progress, mechanisms and challenges of graphene application in four main reactions, i.e., oxygen reduction reaction, water splitting, water treatment and Fischer-Tropsch synthesis. This review also summarises the advantages and drawbacks of graphene over other commonly used catalysts. Given the inherent nature of graphene, coupled with its recent accelerated advancement in the synthesis and modification processes, it is anticipated that the application of graphene in catalysis will grow exponentially from its current stage of infancy.

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MoO3-adjusted δ-MnO2 nanosheet for catalytic oxidation of Hg0 to Hg2+

Cited by 66 publications

References 69 publications

Partial Oxidation of NO by H₂O₂ and afterward Reduction by NH₃-Selective Catalytic Reduction: An Efficient Method for NO Removal

Partial Oxidation of NO by H₂O₂ and afterward Reduction by NH₃-Selective Catalytic Reduction: An Efficient Method for NO Removal

Synthesis of graphene: Potential carbon precursors and approaches

A recent trend: application of graphene in catalysis

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MoO3-adjusted δ-MnO2 nanosheet for catalytic oxidation of Hg0 to Hg2+

Cited by 66 publications

References 69 publications

Partial Oxidation of NO by H2O2 and afterward Reduction by NH3-Selective Catalytic Reduction: An Efficient Method for NO Removal

Partial Oxidation of NO by H2O2 and afterward Reduction by NH3-Selective Catalytic Reduction: An Efficient Method for NO Removal

Synthesis of graphene: Potential carbon precursors and approaches

A recent trend: application of graphene in catalysis

Contact Info

Product

Resources

About

Partial Oxidation of NO by H₂O₂ and afterward Reduction by NH₃-Selective Catalytic Reduction: An Efficient Method for NO Removal

Partial Oxidation of NO by H₂O₂ and afterward Reduction by NH₃-Selective Catalytic Reduction: An Efficient Method for NO Removal