MnO2-decorated N-doped carbon nanotube with boosted activity for low-temperature oxidation of formaldehyde

Peng, Shuai; Yang, Xixian; Strong, Peter James; Sarkar, Binoy; Jiang, Qiang; Peng, Feng; Liu, Defei; Wang, Hailong

doi:10.1016/j.jhazmat.2020.122750

Cited by 67 publications

(33 citation statements)

References 47 publications

(49 reference statements)

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“…Carbon‐based materials are the most widely used materials in today's energy and environmental fields. [ 269 ] The combination of MnO 2 with carbon materials (such as carbon nanotube, [ 270–274 ] carbon hollow nanospheres, [ 275 ] carbon fiber, [ 276,277 ] activated carbon, [ 278 ] carbon cloth, [ 279 ] graphene, [ 280–282 ] etc.) have been widely developed to enhance the performance of MnO 2 .…”

Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

“…Peng et al. [ 274 ] directly deposited MnO 2 on the surface of carbon nanotube (CNT) and N‐doped CNT (NCTN) by an in situ oxidation approach ( Figure a) for the high‐efficiency and low‐temperature catalytic oxidation of formaldehyde. Compared with CNT/MnO 2 , NCNT/MnO 2 showed superior activity and selectivity for formaldehyde oxidation, due to the more active oxygen on the surface of NCNT/MnO 2 (confirmed by DFT calculations).…”

Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

“…It is worth noting that the whole process of the reaction is accompanied by the adsorption and desorption of oxygen, as well as the conversion of surface oxygen and lattice oxygen. In addition to noble metals loading, carbon modification (graphite‐like nanocarbon, [ 452 ] carbon nanotube, [ 274 ] carbon cloth, [ 279 ] graphene, [ 289,462 ] and hollow carbon sphere [ 463 ] ) and metal oxide modification (CeO 2 , [ 450,464 ] etc.) have also been reported in recent years to improve the catalytic performance of MnO 2 ‐based catalysts for formaldehyde degradation.…”

Section: Environmental Applicationsmentioning

confidence: 99%

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MnO₂‐Based Materials for Environmental Applications

et al. 2021

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Manganese dioxide (MnO2) is a promising photo–thermo–electric‐responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2‐based composites via the construction of homojunctions and MnO2/semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2‐based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high‐efficiency MnO2‐based materials for comprehensive environmental applications is provided.

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Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

Section: Environmental Applicationsmentioning

confidence: 99%

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MnO₂‐Based Materials for Environmental Applications

et al. 2021

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“…Metal oxide nanoparticles have been explored for a wide spectrum of emerging applications, such as energy [ 11 , 12 , 13 ] and the environment [ 14 , 15 ]. In particular, metal oxide nanoparticles supported on electrically conductive carbon nanomaterials offer vast opportunities to achieve high-performance materials in energy conversion/storage applications, such as rechargeable batteries [ 16 , 17 ], supercapacitors [ 6 ] and water splitting [ 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes

Lee

Lim

et al. 2021

Nanomaterials

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Metal oxide nanoparticles supported on heteroatom-doped graphitic surfaces have been pursued for several decades for a wide spectrum of applications. Despite extensive research on functional metal oxide nanoparticle/doped carbon nanomaterial hybrids, the role of the heteroatom dopant in the hybridization process of doped carbon nanomaterials has been overlooked. Here, the direct growth of MnOx and RuOx nanoparticles in nitrogen (N)-doped sites of carbon nanotubes (NCNTs) is presented. The quaternary nitrogen (NQ) sites of CNTs actively participate in the nucleation and growth of the metal nanoparticles. The evenly distributed NQ nucleation sites mediate the generation of uniformly dispersed <10 nm diameter MnOx and RuOx nanoparticles, directly decorated on NCNT surfaces. The electrochemical performance of the resultant hybridized materials was evaluated using cyclic voltammetry. This novel hybridization method using the dopant-mediated nucleation and growth of metal oxides suggests ways that heteroatom dopants can be utilized to optimize the structure, interface and corresponding properties of graphitic carbon-based hybrid materials.

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Thermocatalytic Degradation of Gaseous Formaldehyde Using Transition Metal‐Based Catalysts

2023

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Formaldehyde (HCHO: FA) is one of the most abundant but hazardous gaseous pollutants. Transition metal oxide (TMO)-based thermocatalysts have gained much attention in its removal due to their excellent thermal stability and cost-effectiveness. Herein, a comprehensive review is offered to highlight the current progress in TMO-based thermocatalysts (e.g., manganese, cerium, cobalt, and their composites) in association with the strategies established for catalytic removal of FA. Efforts are hence made to describe the interactive role of key factors (e.g., exposed crystal facets, alkali metal/nitrogen modification, type of precursors, and alkali/acid treatment) governing the catalytic activity of TMO-based thermocatalysts against FA. Their performance has been evaluated further between two distinctive operation conditions (i.e., low versus high temperature) based on computational metrics such as reaction rate. Accordingly, the superiority of TMO-based composite catalysts over mono-and bi-metallic TMO catalysts is evident to reflect the abundant surface oxygen vacancies and enhanced FA adsorptivity of the former group. Finally, the present challenges and future prospects for TMO-based catalysts are discussed with respect to the catalytic oxidation of FA. This review is expected to offer valuable information to design and build high performance catalysts for the efficient degradation of volatile organic compounds.

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MnO2-decorated N-doped carbon nanotube with boosted activity for low-temperature oxidation of formaldehyde

Cited by 67 publications

References 47 publications

MnO₂‐Based Materials for Environmental Applications

MnO₂‐Based Materials for Environmental Applications

N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes

Thermocatalytic Degradation of Gaseous Formaldehyde Using Transition Metal‐Based Catalysts

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MnO2-decorated N-doped carbon nanotube with boosted activity for low-temperature oxidation of formaldehyde

Cited by 67 publications

References 47 publications

MnO2‐Based Materials for Environmental Applications

MnO2‐Based Materials for Environmental Applications

N-Dopant-Mediated Growth of Metal Oxide Nanoparticles on Carbon Nanotubes

Thermocatalytic Degradation of Gaseous Formaldehyde Using Transition Metal‐Based Catalysts

Contact Info

Product

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About

MnO₂‐Based Materials for Environmental Applications

MnO₂‐Based Materials for Environmental Applications