Recent advances in the preparation and catalytic performance of Mn-based oxide catalysts with special morphologies for the removal of air pollutants

Author(s): Chao Peng ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Di Yu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Lanyi Wang ⁶ ^, ⁷ ^, ⁸ ^, ⁵ , Xuehua Yu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Zhen Zhao ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵

Publication date (Electronic): 2021

Journal: Journal of Materials Chemistry A

Publisher: Royal Society of Chemistry (RSC)

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Abstract

The recent advances in the preparation of Mn-based oxide catalysts with special morphologies and their catalytic performance for the removal of air pollutants are summarized.

Abstract

Air pollutants cause serious environmental pollution and harm to human health, which has led to air pollution gaining attention. At present, the catalytic oxidation technology is one of the most effective and universal technologies in dealing with air pollutants. The research and development of highly efficient catalysts with low cost is the decisive factor for the wide application of the catalytic oxidation technology. Mn-based oxides with special morphologies have been widely used to eliminate air pollutants owing to their unique physical and chemical properties such as low price, environment-friendliness, and high catalytic activity. In this paper, the preparation of flower-like, rod-like, cubic-like, hollow-like, three-dimensional ordered macropores, and other special Mn-based oxide materials is introduced in detail. The progress in the development of Mn-based catalysts with special morphologies for the removal of nitrogen oxides, soot particles, volatile organic compounds, carbon monoxide, ozone, sulfur dioxide, and other pollutants is summarized in detail. Finally, the existing problems encountered in the use of Mn-based oxide catalysts with special morphologies in the catalytic removal of air pollutants are proposed, and future research and development directions are also discussed.

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Most cited references 264

Record: found
Abstract: found
Article: not found

Shape control of CdSe nanocrystals

Peng, Manna, Yang … (2000)

Nanometre-size inorganic dots, tubes and wires exhibit a wide range of electrical and optical properties that depend sensitively on both size and shape, and are of both fundamental and technological interest. In contrast to the syntheses of zero-dimensional systems, existing preparations of one-dimensional systems often yield networks of tubes or rods which are difficult to separate. And, in the case of optically active II-VI and III-V semiconductors, the resulting rod diameters are too large to exhibit quantum confinement effects. Thus, except for some metal nanocrystals, there are no methods of preparation that yield soluble and monodisperse particles that are quantum-confined in two of their dimensions. For semiconductors, a benchmark preparation is the growth of nearly spherical II-VI and III-V nanocrystals by injection of precursor molecules into a hot surfactant. Here we demonstrate that control of the growth kinetics of the II-VI semiconductor cadmium selenide can be used to vary the shapes of the resulting particles from a nearly spherical morphology to a rod-like one, with aspect ratios as large as ten to one. This method should be useful, not only for testing theories of quantum confinement, but also for obtaining particles with spectroscopic properties that could prove advantageous in biological labelling experiments and as chromophores in light-emitting diodes.

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Record: found
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Article: not found

Shape-controlled synthesis of metal nanocrystals: simple chemistry meets complex physics?

Younan Xia, Yujie Xiong, Byungkwon Lim … (2009)

Nanocrystals are fundamental to modern science and technology. Mastery over the shape of a nanocrystal enables control of its properties and enhancement of its usefulness for a given application. Our aim is to present a comprehensive review of current research activities that center on the shape-controlled synthesis of metal nanocrystals. We begin with a brief introduction to nucleation and growth within the context of metal nanocrystal synthesis, followed by a discussion of the possible shapes that a metal nanocrystal might take under different conditions. We then focus on a variety of experimental parameters that have been explored to manipulate the nucleation and growth of metal nanocrystals in solution-phase syntheses in an effort to generate specific shapes. We then elaborate on these approaches by selecting examples in which there is already reasonable understanding for the observed shape control or at least the protocols have proven to be reproducible and controllable. Finally, we highlight a number of applications that have been enabled and/or enhanced by the shape-controlled synthesis of metal nanocrystals. We conclude this article with personal perspectives on the directions toward which future research in this field might take.

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Record: found
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Article: not found

Structural biological materials: critical mechanics-materials connections.

Marc André Meyers, Joanna McKittrick, Po-Yu Chen (2013)

Spider silk is extraordinarily strong, mollusk shells and bone are tough, and porcupine quills and feathers resist buckling. How are these notable properties achieved? The building blocks of the materials listed above are primarily minerals and biopolymers, mostly in combination; the first weak in tension and the second weak in compression. The intricate and ingenious hierarchical structures are responsible for the outstanding performance of each material. Toughness is conferred by the presence of controlled interfacial features (friction, hydrogen bonds, chain straightening and stretching); buckling resistance can be achieved by filling a slender column with a lightweight foam. Here, we present and interpret selected examples of these and other biological materials. Structural bio-inspired materials design makes use of the biological structures by inserting synthetic materials and processes that augment the structures' capability while retaining their essential features. In this Review, we explain this idea through some unusual concepts.

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Author and article information

Contributors

Zhen Zhao: (View ORCID Profile)

Journal

Journal ID (publisher-id): JMCAET

Title: Journal of Materials Chemistry A

Abbreviated Title: J. Mater. Chem. A

Publisher: Royal Society of Chemistry (RSC)

ISSN (Print): 2050-7488

ISSN (Electronic): 2050-7496

Publication date Created: June 8 2021

Publication date (Electronic): 2021

Volume: 9

Issue: 22

Pages: 12947-12980

Affiliations

[1 ]Institute of Catalysis for Energy and Environment

[2 ]College of Chemistry and Chemical Engineering

[3 ]Shenyang Normal University

[4 ]Shenyang

[5 ]China

[6 ]State Key Laboratory of Heavy Oil Processing

[7 ]China University of Petroleum

[8 ]Beijing 102249

Article

DOI: 10.1039/D1TA00911G

SO-VID: 2e68c160-d515-4a9d-8f91-d74f41a1852a

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http://rsc.li/journals-terms-of-use

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