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Porous Co3O4 nanowires and nanorods: Highly active catalysts for the combustion of toluene

Paper ID Volume ID Publish Year Pages File Format Full-Text
40584 45859 2013 8 PDF Available
Title
Porous Co3O4 nanowires and nanorods: Highly active catalysts for the combustion of toluene
Abstract

Porous Co3O4 nanowires and nanorods (Co3O4-HT, Co3O4-HT-PEG, Co3O4-HT-CTAB, and Co3O4-ME-CTAB, respectively) have been fabricated via the hydrothermal or microemulsion route in the absence and presence of polyethylene glycol (PEG) or cetyltrimethylammonium bromide (CTAB), respectively. Physicochemical properties of the materials were characterized by means of numerous techniques, and their catalytic activities for toluene combustion were evaluated. It is shown that Co3O4-HT-PEG and Co3O4-HT-CTAB displayed a porous nanowire-like morphology, whereas Co3O4-ME-CTAB exhibited a porous nanorod-like shape. The porous Co3O4 samples (surface area = 47–52 m2/g) possessed much higher surface oxygen adspecies concentrations and much better low-temperature reducibility than the nonporous counterpart. The Co3O4-HT-CTAB sample showed the highest catalytic performance (T50% = 195 and T90% = 215 °C at a space velocity of 20,000 mL/(g h)). It is concluded that the excellent catalytic performance of Co3O4-HT-CTAB was associated with its higher surface area and surface oxygen species concentration, and better low-temperature reducibility.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (137 K)Download as PowerPoint slideHighlights► Porous Co3O4 nanowires and nanorods are prepared by hydrothermal or microemulsion method. ► Porous Co3O4 nanowires and nanorods are higher in Oads content and better in reducibility. ► Porous Co3O4 nanowires and nanorods exhibit high catalytic performance for toluene combustion. ► Catalytic activity is governed by surface area, Oads content, and reducibility.

Keywords
Porous Co3O4; One-dimensional material; Hydrothermal synthesis method; Microemulsion synthesis method; Toluene combustion
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 450, 15 January 2013, Pages 42–49
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us