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Recent advances on metal-free graphene-based catalysts for the production of industrial chemicals

Zhiyong Wang, Yuan Pu, Dan Wang, Jie-Xin Wang, Jian-Feng Chen

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 855-866 doi: 10.1007/s11705-018-1722-y

Abstract: With the development of carbon catalysts, graphene-based metal-free catalysts have drawn increasing attentionIn recent years, the catalytic activities of metal-free catalysts have significantly improved and theyhave become promising alternatives to traditional metal-based catalysts.The use of metal-free catalysts greatly improves the sustainability of chemical processes.In view of this, the recent progress in the preparation of graphene-based metal-free catalysts along

Keywords： graphene-based materials     metal-free catalyst     industrial chemical productions     catalytic reaction    

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Hollow carbon spheres and their noble metal-free hybrids in catalysis

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1380-1407 doi: 10.1007/s11705-021-2097-z

Abstract: Herein, we overview hollow carbon sphere-based materials and their noble metal-free hybrids in catalysison controlling pore structure and surface morphology, and then heterogeneous doping as well as their metal-free/containing hybrids are presented; next, possible applications for non-noble metal/hollow carbon sphere

Keywords： hollow carbon spheres     functionalization     noble metal-free     catalysis    

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Metal-free, carbon-based catalysts for oxygen reduction reactions

Zhiyi Wu,Zafar Iqbal,Xianqin Wang

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 280-294 doi: 10.1007/s11705-015-1524-4

Abstract: Developing metal-free, carbon-based catalysts to replace platinum-based catalysts for oxygen reduction

Keywords： oxygen reduction reaction     electrocatalysis     metal-free     carbon-based     polynitrogen    

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Nitrogen-Doped Graphene Foam as a Metal-Free Catalyst for Reduction Reactions under a High Gravity Field Article

Zhiyong Wang, Zhijian Zhao, Jesse Baucom, Dan Wang, Liming Dai, Jian-Feng Chen

Engineering 2020, Volume 6, Issue 6,   Pages 680-687 doi: 10.1016/j.eng.2019.12.018

Abstract:

Herein, we report on the effect of a high gravity field on metal-free catalytic reduction, takingcatalyst.The apparent rate constant (kapp) of the metal-free catalytic reduction of NB inThe structure of the 3D metal-free catalysts was stable during the reaction process under a high gravitythe potential to use a high-gravity rotating packed tube reactor for the process intensification of metal-free

Keywords： High-gravity technology     Process intensification     Metal-free catalysts     Carbon nanomaterials     Catalytic    

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Copper nanoparticles/polyaniline-derived mesoporous carbon electrocatalysts for hydrazine oxidation

Tao Zhang, Tewodros Asefa

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 329-338 doi: 10.1007/s11705-018-1741-8

Abstract:

Copper nanoparticles-decorated polyaniline-derived mesoporous carbon that can serve as noble metal-freegood electrocatalytic performance makes this material a promising alternative to conventional noble metal-based

Keywords： copper nanoparticles     mesoporous carbon     noble metal-free electrocatalyst     hydrazine oxidation reaction    

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Rosin side chain type catalyst-free vitrimers with high cross-link density, mechanical strength, and

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1267-1279 doi: 10.1007/s11705-022-2291-7

Abstract: The emergence of vitrimer, a new class of polymer materials can address the problem of recyclability, reprocess ability and recyclability of thermosetting plastics. Rosin, a natural product, is an ideal raw material for the preparation of polymers in a more sustainable way. Nevertheless, due to the huge steric hindrance caused by the hydrogenated phenanthrene ring structure, the cross-link density of materials is frequently lowered. In this study, hydrogenated rosin was adopted for preparing hydrogenated rosin side-chain type diacids, which were reacted with mixed epoxy to obtain rosin side-chain type vitrimers. It was completely characterized by differential scanning calorimetry test, thermogravimetric analysis, shape memory test and self-healing test. The prepared vitrimers exhibited good self-healing properties, excellent heat resistance (Td = 352 °C) as well as high mechanical properties (tensile strength of 46.75 MPa). The tricyclic diterpene structure of rosin was introduced into the side chain in order to avoid the reduction of cross-link density resulting from the huge steric hindrance of the rigid tricyclic hydrophenylene skeleton. Vitrimers can undergo dynamic transesterification reaction without external catalysts due to the autocatalytic effect of tertiary amines from epoxy. Moreover, our work expanded the application field of rosin, increased the added value of rosin, and provided a novel method for preparing rosin-based vitrimers with ideal properties.

Keywords： vitrimers     rosin     catalyst-free     high mechanical properties     dynamic transesterification reaction    

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Exploration of the oxygen transport behavior in non-precious metal catalyst-based cathode catalyst layer

Shiqu CHEN, Silei XIANG, Zehao TAN, Huiyuan LI, Xiaohui YAN, Jiewei YIN, Shuiyun SHEN, Junliang ZHANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 123-133 doi: 10.1007/s11708-022-0849-1

Abstract: proton exchange membrane fuel cells (PEMFCs), in which Pt-based catalysts employed in the cathodic catalystAlthough non-precious metal catalysts (NPMCs) show appreciable activity and stability in the oxygen reductionof two types of membrane electrode structures, one containing low-Pt-based CCL and NPMC-based dummy catalyst

Keywords： proton exchange membrane fuel cells (PEMFCs)     non-precious metal catalyst (NPMC)     cathode catalyst layer    

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Catalytic activity of noble metal nanoparticles toward hydrodechlorination: influence of catalyst electronic

Man ZHANG,Feng HE,Dongye ZHAO

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 888-896 doi: 10.1007/s11783-015-0774-1

Abstract: These metal nanoparticles were then tested for catalytic hydrodechlorination toward two classes of organochlorinatedat the Fermi level) of the metals, suggesting that adsorption of organochlorinated reactants on the metalcatalyst surfaces is the rate-limiting step for catalytic hydrodechlorination.

Keywords： catalytic hydrodechlorination     electronic structure     metal nanoparticles     reaction mechanisms    

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Diffusion process in enzyme–metal hybrid catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 921-929 doi: 10.1007/s11705-022-2144-4

Abstract: Enzyme–metal hybrid catalysts bridge the gap between enzymatic and heterogeneous catalysis, which isPrevious studies have demonstrated that the enzyme–metal hybrid catalysts exhibited considerably highercatalytic efficiency in cascade reactions, compared with that of the combination of separated enzyme and metalHere, we investigated the diffusion process in enzyme–metal hybrid catalysts using Pd/lipase-Pluronicactive sites, which provides a theoretical foundation for the rational design of enzyme–metal hybrid

Keywords： enzyme–metal hybrid catalyst     internal diffusion     proximity effect     kinetic model    

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Microwave-assisted catalyst-free hydrolysis of fibrous cellulose for deriving sugars and biochemicals

Songshan Jiang, Helen Daly, Huan Xiang, Ying Yan, Huiping Zhang, Christopher Hardacre, Xiaolei Fan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 718-726 doi: 10.1007/s11705-019-1804-5

Abstract: Microwave (MW) assisted catalyst-free hydrolysis of fibrous cellulose (FC, cellulolysis) at 200°C promoted

Keywords： microwave     fibrous cellulose     hydrolysis     sugars     mechanism    

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Micro-sized hydrothermal carbon supporting metal oxide nanoparticles as efficient catalyst for mono-dehydration

Cheng PAN, Chao FAN, Wanqin WANG, Teng LONG, Benhua HUANG, Donghua ZHANG, Peigen SU, Aqun ZHENG, Yang SUN

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 822-839 doi: 10.1007/s11708-020-0677-0

Abstract: To improve the mono-dehydration efficiency, a series of metal-containing hydrothermal carbonaceous materials(HTC) are prepared as catalyst in this work.

Keywords： hydrothermal carbon     morphology     catalyst     mono-dehydration     sugar alcohol    

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Current challenge and perspective of PGM-free cathode catalysts for PEM fuel cells

Gang WU

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 286-298 doi: 10.1007/s11708-017-0477-3

Abstract: To significantly reduce the cost of proton exchange membrane fuel cells, platinum-group metal (PGM)-freeThe current Edisonian approach (i.e., trial and error) to developing PGM-free catalysts has been ineffectiveStructural and chemical controlled precursors such as metal-organic frameworks are highly desirable for

Keywords： oxygen reduction     fuel cells     cathode     nonprecious metal catalysts     carbon nanocomposites    

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Fischer-Tropsch synthesis by reduced graphene oxide nanosheets supported cobalt catalysts: Role of support and metalnanoparticle size on catalyst activity and products selectivity

Hasan Oliaei Torshizi, Ali Nakhaei Pour, Ali Mohammadi, Yahya Zamani, Seyed Mehdi Kamali Shahri

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 299-309 doi: 10.1007/s11705-020-1925-x

Abstract: activity results showed that the cobalt-time yield and turnover frequency passed from a maximum for catalyst

Keywords： cobalt catalyst     cobalt particle size     Fischer-Tropsch synthesis     reduced graphene oxide     supported catalyst    

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Noble-metal-free cobalt hydroxide nanosheets for efficient electrocatalytic oxidation

Jie Lan, Daizong Qi, Jie Song, Peng Liu, Yi Liu, Yun-Xiang Pan

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 948-955 doi: 10.1007/s11705-020-1920-2

Abstract: Cobalt hydroxide has been emerging as a promising catalyst for the electrocatalytic oxidation reactions

Keywords： electrocatalytic oxidation     cobalt hydroxide     nanosheet     water     glucose    

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Title Author Date Type Operation

Recent advances on metal-free graphene-based catalysts for the production of industrial chemicals

Zhiyong Wang, Yuan Pu, Dan Wang, Jie-Xin Wang, Jian-Feng Chen

Journal Article

Hollow carbon spheres and their noble metal-free hybrids in catalysis

Journal Article

Metal-free, carbon-based catalysts for oxygen reduction reactions

Zhiyi Wu,Zafar Iqbal,Xianqin Wang

Journal Article

Nitrogen-Doped Graphene Foam as a Metal-Free Catalyst for Reduction Reactions under a High Gravity Field

Zhiyong Wang, Zhijian Zhao, Jesse Baucom, Dan Wang, Liming Dai, Jian-Feng Chen

Journal Article

Copper nanoparticles/polyaniline-derived mesoporous carbon electrocatalysts for hydrazine oxidation

Tao Zhang, Tewodros Asefa

Journal Article

Metal-Free Hexagonal Perovskite High-Energetic Materials with NH3OH+/NH2

Yu Shang, Zhi-Hong Yu, Rui-Kang Huang, Shao-Li Chen, De-Xuan Liu, Xiao-Xian Chen, Wei-Xiong Zhang, Xiao-Ming Chen

Journal Article

Rosin side chain type catalyst-free vitrimers with high cross-link density, mechanical strength, and

Journal Article

Exploration of the oxygen transport behavior in non-precious metal catalyst-based cathode catalyst layer

Shiqu CHEN, Silei XIANG, Zehao TAN, Huiyuan LI, Xiaohui YAN, Jiewei YIN, Shuiyun SHEN, Junliang ZHANG

Journal Article

Catalytic activity of noble metal nanoparticles toward hydrodechlorination: influence of catalyst electronic

Man ZHANG,Feng HE,Dongye ZHAO

Journal Article

Diffusion process in enzyme–metal hybrid catalysts

Journal Article

Microwave-assisted catalyst-free hydrolysis of fibrous cellulose for deriving sugars and biochemicals

Songshan Jiang, Helen Daly, Huan Xiang, Ying Yan, Huiping Zhang, Christopher Hardacre, Xiaolei Fan

Journal Article

Micro-sized hydrothermal carbon supporting metal oxide nanoparticles as efficient catalyst for mono-dehydration

Cheng PAN, Chao FAN, Wanqin WANG, Teng LONG, Benhua HUANG, Donghua ZHANG, Peigen SU, Aqun ZHENG, Yang SUN

Journal Article

Current challenge and perspective of PGM-free cathode catalysts for PEM fuel cells

Gang WU

Journal Article

Fischer-Tropsch synthesis by reduced graphene oxide nanosheets supported cobalt catalysts: Role of support and metalnanoparticle size on catalyst activity and products selectivity

Hasan Oliaei Torshizi, Ali Nakhaei Pour, Ali Mohammadi, Yahya Zamani, Seyed Mehdi Kamali Shahri

Journal Article

Noble-metal-free cobalt hydroxide nanosheets for efficient electrocatalytic oxidation

Jie Lan, Daizong Qi, Jie Song, Peng Liu, Yi Liu, Yun-Xiang Pan

Journal Article