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Hydrothermal synthesis of crystalline α-/β-MnO2 nanorods via γ-MnOOH nanorod precursors

ZHANG Weixin, REN Xiangbin, YANG Zeheng, WANG Hua, WANG Qiang, HUANG Fei

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 4,   Pages 365-371 doi: 10.1007/s11705-007-0066-9

Abstract: The crystalline -MnO and -MnO nanorods have been successfully prepared via a facile hydrothermal methodThe -MnO nanorods are prepared from the 100°C -MnOOH precursor, while the -MnO nanorods are obtainedBesides, the catalytic activity of the prepared -MnO and -MnO nanorods for the HO decomposition has been

Keywords： obtained     -MnOOH precursor     Besides     high-resolution transmission     precursor    

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Catalytic activities and mechanism of formaldehyde oxidation over gold supported on MnO

Guanglong PANG,Donghui WANG,Yunhong ZHANG,Chunyan MA,Zhengping HAO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 447-457 doi: 10.1007/s11783-015-0808-8

Abstract: MnO microspheres with various surface structures were prepared using the hydrothermal method, and AuWe obtained three MnO microspheres and Au/MnO samples: coherent solid spheres covered with wire-likeaccelerate surface oxygen species transition, which can account for the catalytic activity enhancement of Au/MnO .A proposed mechanism of formaldehyde oxidation over Au/MnO catalysts was also obtained.

Keywords： MnO2 microspheres     Au/MnO2     formaldehyde oxidation     γ-MnO2    

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Plasmonic Au nanoparticles supported on both sides of TiO2 hollow spheres for maximising photocatalytic

Jianwei Lu, Lan Lan, Xiaoteng Terence Liu, Na Wang, Xiaolei Fan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 665-671 doi: 10.1007/s11705-019-1815-2

Abstract: hollow spheres (HSs) was developed, in which both sides of TiO HSs were utilised for stabilising AuThe composite structure of single Au NP yolk-TiO shell-Au NPs, denoted as Au@Au(TiO , was rendered andAu@Au(TiO showed enhanced photocatalytic activity in the degradation of methylene blue and phenol inaqueous phase under visible light surpassing that of other reference materials such as Au(TiO by 77%and Au@P25 by 52%, respectively, in phenol degradation.

Keywords： TiO2 hollow spheres     plasmonic Au nanoparticles     confinement     visible light     photocatalytic degradation    

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g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 217-225 doi: 10.1007/s11705-022-2214-7

Abstract: Herein, superior α-MnO2@g-C3N4 was successfully prepared forCompared with pure α-MnO2, α-MnO2@g-C3N4 hasEven at 1 A·g–1, the α-MnO2@g-C3N4 still retains 100The α-MnO2@g-C3N4-based cathode has the highest energy density

Keywords： α-MnO2 hollow nanorods     g-C3N4     heterojunction     aqueous Zn-ion    

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Atomic force microscopy study on the microtopography of natural organic matter and newly formed hydrous MnO2

GUO Jin, MA Jun, SHI Xuehua

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 251-256 doi: 10.1007/s11783-007-0043-z

Abstract: nm) as well as some spherical particle structures compared with the hydrous manganese dioxide with 2

Keywords： spherical     microtopography     potassium permanganate     uniform spherical     morphology    

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Fabrication and photocatalytic ability of an Au/TiO2

Fenghe Lv, Hua Wang, Zhangliang Li, Qi Zhang, Xuan Liu, Yan Su

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 1, doi: 10.1007/s11783-017-0977-8

Abstract: A new type of Au/TiO /reduced graphene oxide (RGO) nanocomposite was fabricated by the hydrothermal synthesisof TiO on graphene oxide followed by the photodeposition of Au nanoparticles.Transmission electron microscopy images showed that Au nanoparticles were loaded onto the surface ofAu/TiO /RGO had a better photocatalytic activity than Au/TiO for the degradation of phenol.Electrochemical measurements indicated that Au/TiO /RGO had an improved charge transfer capability.

Keywords： Reduced graphene oxide     Au     TiO2     Nanocomposite     Photocatalysis    

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A mini review on chemical fixation of CO 2 : Absorption and catalytic conversion into cyclic carbonates

Weili DAI, Chaktong AU, Shenglian LUO, Shuangfeng YIN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 163-171 doi: 10.1007/s11705-009-0235-0

Abstract: In this article, we present our research results on chemical fixation of CO using organobismuth compounds. We fabricated bismuth biphenoate complex, Zn-Mg-Al composite oxides, and SBA-15 or Al-SBA-15 immobilized hydroxyl ionic liquid for CO cycloaddition onto epoxides. The hypervalent bismuth compounds show good ability for association and dissociation with CO. The bismuth biphenolate complexes are catalytically effective for the cycloaddition reaction. The heterogeneous catalysts, viz. Zn-Mg-Al oxides and SBA-15 or Al-SBA-15 immobilized ionic liquid, are efficient for the synthesis of cyclic carbonate from CO and epoxide. It is found that the presence of a trace amount of water can improve the catalytic activity of the immobilized ionic liquid.

Keywords： SBA-15     CO cycloaddition     Al-SBA-15 immobilized     CO     dissociation    

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Preparation of biomass-derived carbon loaded with MnO as lithium-ion battery anode for improving its

Frontiers of Chemical Science and Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11705-023-2376-y

Abstract: treatment, this work proposes a two-step activation method to load MnO2 charge transfer ontobiomass-derived carbon (KAC@MnO2).Comprehensive analysis reveals that KAC@MnO2 has a micro-mesoporous coexistence structureSpecifically, KAC@MnO2 exhibits an initial charge-discharge capacity of 847.3/1813.2 mAh·gEven at a high current density of 1.0 A·g–1, KAC@MnO2 still exhibits excellent

Keywords： biomass-derived carbon     MnO2     lithium-ion batteries     anode material     high reversible capacity    

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Facile synthesis of α-MnO

Weixin ZHANG, Wenran ZHAO, Zaoyuan ZHOU, Zeheng YANG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 1,   Pages 64-72 doi: 10.1007/s11705-014-1402-5

Abstract: In this paper, α-MnO micronests composed of nanowires were fabricated via a hydrothermal reaction ofThe α-MnO micronests were demonstrated to have a higher adsorption capacity than γ-MnO microspheresThe amount of Congo red adsorbed per unit weight of α-MnO micronests increased significantly from 114Kinetics, isotherms and thermodynamics for the adsorption of Congo red on α-MnO micronests were examinedThe experimental results indicate that α-MnO micronests possess a high adsorption capacity and could

Keywords： MnO2     Congo red     adsorption     kinetics     isotherm     thermodynamics    

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Engineering a Coordinatively Unsaturated Au–O–Ti3+ Structure Toward Unprecedented H2 Efficiency for Low-Temperature Propene Epoxidation with H2 and O2 Article

Zhaoning Song, Hao Yan, Juncong Yuan, Hongfei Ma, Jianlin Cao, Yongxiang Wang, Qiang Wang, Chong Peng, Feng Deng, Xiang Feng, De Chen, Chaohe Yang, Yongkang Hu

Engineering 2023, Volume 25, Issue 6,   Pages 144-156 doi: 10.1016/j.eng.2023.01.008

Abstract:

Since 1998, the Au–O–Ti4+ sites of Au/Ti-based catalysts have been widely acceptedas the active sites for propene epoxidation with H2 and O2 at a relatively hightemperature, although they are limited by poor H2 efficiency.on conventional Au–O–Ti4+ sites.the in situ formation of H2O2 and the Ti–OOH intermediate, even

Keywords： Propene epoxidation     H2 efficiency     Au/Ti bifunctional catalysts     Coordinatively unsaturated    

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Effects of oxidizing environment on digestate humification and identification of substances governing the dissolved organic matter (DOM) transformation process

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1520-0

Abstract:

• Liquid digestate humification was investigated under different oxidizing environment.

Keywords： Liquid digestate     MnO2     Oxygen     DOM transformation     Humic-like acids    

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Epigenetic dysregulation in hepatocellular carcinoma: focus on polycomb group proteins

Sandy Leung-Kuen Au, Irene Oi-Lin Ng, Chun-Ming Wong

Frontiers of Medicine 2013, Volume 7, Issue 2,   Pages 231-241 doi: 10.1007/s11684-013-0253-7

Abstract: PcG proteins assemble into polycomb repressive complex 1 (PRC1) and polycomb repressive complex 2 (PRC2Last but not least, we will consider the therapeutic potential of targeting enhancer of zeste homolog 2(EZH2) as a possible treatment for HCC.

Keywords： liver cancer     epigenetics     histone modifications     polycomb group proteins     enhancer of zeste homolog 2 (EZH2    

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Development of new transient liquid phase system Au-Sn-Au for microsystem technology

Kirsten BOBZIN, Nazlim BAGCIVAN, Lidong ZHAO, Stefania FERRARA, Jan PERNE

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 370-375 doi: 10.1007/s11465-010-0107-9

Abstract: In this study, a new transient liquid phase (TLP) system Au-Sn-Au was developed for potential medicalThe high and low melting phases Au and Sn were deposited onto diverse substrates by magnetron-sputter-ion

Keywords： transient liquid phase     microtechnology     soldering     diffusion     physical vapor deposition (PVD)    

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Co-present Pb(II) accelerates the oxidation of organic contaminants by permanganate: Role of Pb(III)

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1530-y

Abstract:

• Simultaneous removal of organic contaminants and Pb(II) was achieved by Mn(VII).

Keywords： Permanganate     Pb(II) oxidation     MnO2     pH effect    

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Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1726-1734 doi: 10.1007/s11705-022-2188-5

Abstract: In this work, the kinetics of SrFeO3−δ–CaO∙MnO nanocomposite reduction by methane was

Keywords： chemical looping reforming     SrFeO3−δ/CaO·MnO nanocomposite     reduction kinetics     Avrami–Erofeyev    

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Title Author Date Type Operation

Hydrothermal synthesis of crystalline α-/β-MnO2 nanorods via γ-MnOOH nanorod precursors

ZHANG Weixin, REN Xiangbin, YANG Zeheng, WANG Hua, WANG Qiang, HUANG Fei

Journal Article

Catalytic activities and mechanism of formaldehyde oxidation over gold supported on MnO

Guanglong PANG,Donghui WANG,Yunhong ZHANG,Chunyan MA,Zhengping HAO

Journal Article

Plasmonic Au nanoparticles supported on both sides of TiO2 hollow spheres for maximising photocatalytic

Jianwei Lu, Lan Lan, Xiaoteng Terence Liu, Na Wang, Xiaolei Fan

Journal Article

g-CN-coated MnO hollow nanorod cathode for stable aqueous Zn-ion batteries

Journal Article

Atomic force microscopy study on the microtopography of natural organic matter and newly formed hydrous MnO2

GUO Jin, MA Jun, SHI Xuehua

Journal Article

Fabrication and photocatalytic ability of an Au/TiO2

Fenghe Lv, Hua Wang, Zhangliang Li, Qi Zhang, Xuan Liu, Yan Su

Journal Article

A mini review on chemical fixation of CO 2 : Absorption and catalytic conversion into cyclic carbonates

Weili DAI, Chaktong AU, Shenglian LUO, Shuangfeng YIN,

Journal Article

Preparation of biomass-derived carbon loaded with MnO as lithium-ion battery anode for improving its

Journal Article

Facile synthesis of α-MnO

Weixin ZHANG, Wenran ZHAO, Zaoyuan ZHOU, Zeheng YANG

Journal Article

Engineering a Coordinatively Unsaturated Au–O–Ti3+ Structure Toward Unprecedented H2 Efficiency for Low-Temperature Propene Epoxidation with H2 and O2

Zhaoning Song, Hao Yan, Juncong Yuan, Hongfei Ma, Jianlin Cao, Yongxiang Wang, Qiang Wang, Chong Peng, Feng Deng, Xiang Feng, De Chen, Chaohe Yang, Yongkang Hu

Journal Article

Effects of oxidizing environment on digestate humification and identification of substances governing the dissolved organic matter (DOM) transformation process

Journal Article

Epigenetic dysregulation in hepatocellular carcinoma: focus on polycomb group proteins

Sandy Leung-Kuen Au, Irene Oi-Lin Ng, Chun-Ming Wong

Journal Article

Development of new transient liquid phase system Au-Sn-Au for microsystem technology

Kirsten BOBZIN, Nazlim BAGCIVAN, Lidong ZHAO, Stefania FERRARA, Jan PERNE

Journal Article

Co-present Pb(II) accelerates the oxidation of organic contaminants by permanganate: Role of Pb(III)

Journal Article

Reduction kinetics of SrFeO/CaO∙MnO nanocomposite as effective oxygen carrier for chemical looping partial

Journal Article