The microemulsion preparation and high catalytic performance of mesoporous NiO nanorods and nanocubes for toluene combustion

Bai, Guangmei; Dai, Hongxing; Deng, Jiguang; Liu, Yuxi; Qiu, Wenge; Zhao, Zhiye; Li, Xinwei; Yang, Huanggen

doi:10.1016/j.cej.2013.01.008

Cited by 87 publications

(36 citation statements)

References 49 publications

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“…6(b, d, f) displays the HR-TEM images of the NiO samples. The exposed (2 0 0) facets with clear lattice fringes are observed for all the NiO samples [16,41]. The measured lattice spacings are about 0.21-0.22 nm, which is in good agreement with the d values of 0.2089 nm measured by XRD for the (2 0 0) lattice plane [15,16].…”

Section: Xrd Patterns Of the Fresh And Used Catalystssupporting

confidence: 82%

“…In comparison with the XRD patterns of the standard cubic NiO sample (JCPDS PDF# 47-1049), the peaks located at 2Â = 37.2 • ,43.3 • , 62.9 • , 75.4 • , and 79.4 • can be assigned to the (1 1 1), (2 0 0), (2 2 0), (3 1 1), and (2 2 2) crystal planes, respectively [41,42]. It is apparent that pure cubic NiO crystalline phase has been formed in all the NiO samples [15,16]. To quantify the crystallinity of the samples, the crystalline sizes of the samples are listed in Table 2.…”

Section: Xrd Patterns Of the Fresh And Used Catalystsmentioning

confidence: 94%

“…When studying nano-structured NiO catalysts for toluene oxidation, Dai and co-workers also observed this asymmetric reduction peak. The first shoulder peak is ascribed by them to the reduction of Ni 3+ to Ni 2+ , and the second major peak is ascribed to the reduction of Ni 2+ to Ni 0 [15,16]. Based on this, the Ni 3+ /Ni 2+ atomic ratios of the NiO samples in this study are calculated by deconvoluting the reduction peak, with the results listed in Table 3.…”

Section: H 2 -Tpr Analysis On the Redox Properties Of The Fresh And Umentioning

confidence: 98%

“…To clarify this, the H 2 uptake amount of the catalysts are quantified and listed in Table 3. Theoretically, if all the Ni species are present as Ni 2+ , the H 2 consumption amount should be 13.8 mmol g −1 , and the H/Ni atomic ratio should be around 2 [15,16]. However, both of the calculated H 2 consumption amount and H/Ni atomic ratios are higher than the theoretical values, indicating the presence of a large amount of Ni 2+ defects in the samples prepared in this study, thus leading to the formation of Ni 3+ .…”

Section: H 2 -Tpr Analysis On the Redox Properties Of The Fresh And Umentioning

confidence: 99%

See 3 more Smart Citations

Porous NiO nano-sheet as an active and stable catalyst for CH4 deep oxidation

Peng

et al. 2015

Applied Catalysis A: General

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Section: Xrd Patterns Of the Fresh And Used Catalystssupporting

confidence: 82%

Section: Xrd Patterns Of the Fresh And Used Catalystsmentioning

confidence: 94%

Section: H 2 -Tpr Analysis On the Redox Properties Of The Fresh And Umentioning

confidence: 98%

Section: H 2 -Tpr Analysis On the Redox Properties Of The Fresh And Umentioning

confidence: 99%

See 2 more Smart Citations

Porous NiO nano-sheet as an active and stable catalyst for CH4 deep oxidation

Peng

et al. 2015

Applied Catalysis A: General

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“…Transition metal oxides are more susceptible to hydrolysis, redox or phase transition reactions, and they simultaneously possess different coordination modes as well as multiple oxidation states, hence, it is difficult to obtain their mesoporous structures [23][24][25][26][27][28]. Modified approaches such as the use of soft or hard templates, hydrothermal or microemulsion strategies have been reported for the synthesis of mesoporous materials [21,25,[29][30][31]. However, these preparation processes are very complicated.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of mesoporous Co3O4 oxides by acid treatment and their catalytic performances for toluene oxidation

Zhang

Zhong

et al. 2018

Applied Catalysis A: General

174

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A B S T R A C TConsidering the harmful effects of volatile organic compounds (VOCs) on the atmosphere and public health, the search for proper catalytic materials for the effective catalytic elimination of VOCs remains one of the most pressing issues in the environmental field. In this study, a series of mesoporous Co 3 O 4 -n (n = 0.00, 0.0001, 0.01, 0.05, 0.10, 1.00, representing the concentration of HNO 3 aqueous solution) catalysts were fabricated by the acid treatment of Co 3 O 4 that was previously prepared via a hydroxycarbonate precipitation method (Co 3 O 4 -P). The catalytic performances of the prepared catalysts were evaluated for the model reaction of toluene oxidation. An obvious enhancement of catalytic activity in the reaction was achieved over the acid-treated Co 3 O 4 catalysts using lower HNO 3 concentrations, with Co 3 O 4 -0.01 exhibiting the optimum catalytic activity (T 90 = 225°C, 15°C lower than that of Co 3 O 4 -P), excellent catalytic durability under dry conditions and a high regeneration capability under humid conditions. Benefitting from the dilute acid treatment, the Co 3 O 4 -n (n = 0.01, 0.05, 0.10) catalysts presented higher specific surface areas, more weak acidic sites and higher abundances of surface Co 2+ and O ads species, which were regarded as the key factors responsible for their enhanced catalytic activities.

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Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

Wei

Xiong²,

Shi³

et al. 2017

Advanced Materials

697

385

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Electrochemical energy storage technology is of critical importance for portable electronics, transportation and large-scale energy storage systems. There is a growing demand for energy storage devices with high energy and high power densities, long-term stability, safety and low cost. To achieve these requirements, novel design structures and high performance electrode materials are needed. Porous 1D nanomaterials which combine the advantages of 1D nanoarchitectures and porous structures have had a significant impact in the field of electrochemical energy storage. This review presents an overview of porous 1D nanostructure research, from the synthesis by bottom-up and top-down approaches with rational and controllable structures, to several important electrochemical energy storage applications including lithium-ion batteries, sodium-ion batteries, lithium-sulfur batteries, lithium-oxygen batteries and supercapacitors. Highlights of porous 1D nanostructures are described throughout the review and directions for future research in the field are discussed at the end.

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The microemulsion preparation and high catalytic performance of mesoporous NiO nanorods and nanocubes for toluene combustion

Cited by 87 publications

References 49 publications

Porous NiO nano-sheet as an active and stable catalyst for CH4 deep oxidation

Porous NiO nano-sheet as an active and stable catalyst for CH4 deep oxidation

Fabrication of mesoporous Co3O4 oxides by acid treatment and their catalytic performances for toluene oxidation

Porous One‐Dimensional Nanomaterials: Design, Fabrication and Applications in Electrochemical Energy Storage

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