Resource Type

Journal Article 327

Conference Videos 3

Year

2023 41

2022 40

2021 34

2020 30

2019 20

2018 21

2017 14

2016 15

2015 17

2014 13

2013 14

2012 9

2011 8

2010 7

2009 8

2008 6

2007 12

2006 1

2005 2

2004 2

open ︾

Keywords

heavy metal 13

liquid metal 12

Heavy metal 10

adsorption 5

metal-organic framework 5

nanoparticle 5

Heavy metals 3

Adsorption 2

Al2O3 2

CO oxidation 2

CO2 capture 2

Carbon dioxide 2

DFT 2

E-waste 2

Nanoparticle 2

additive manufacturing 2

aluminum 2

catalysis 2

fluorescence 2

open ︾

Search scope:

排序： Display mode:

Effect of noble metal nanoparticle size on C–N bond cleavage performance in hydrodenitrogenation: a study

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1986-2000 doi: 10.1007/s11705-023-2337-5

Abstract: On the active metal nanoparticle scale, the role of catalyst size in C–N bond cleavage has not been clearlySo, Ru catalysts with variable nanoparticle sizes were obtained by modulating the reduction temperatureC–N bond cleavage, while the reaction rate tended to increase first and then decrease as the catalyst nanoparticle

Keywords： sp3/sp2-hybridized C–N bond     noble metal nanoparticle     catalytic active site     turnover    

HTML PDF Collect

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    

HTML PDF Collect

Shape/size controlling syntheses, properties and applications of two-dimensional noble metal nanocrystals

Baozhen An,Mingjie Li,Jialin Wang,Chaoxu Li

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 360-382 doi: 10.1007/s11705-016-1576-0

Abstract: Two dimensional (2D) nanocrystals of noble metals (e.g., Au, Ag, Pt) often have unique structural anddiscovering the fundamental mechanisms which govern the synthesis of the diverse geometries of these 2D metalreview, a brief historical survey of the intrinsic anisotropic properties and quantum size effects of 2D noblemetal nanocrystals is given and then a summary of synthetic approaches to control their shapes and sizes

Keywords： two-dimension     noble metal     nanocrystal     surface plasmon     controllable synthesis    

HTML PDF Collect

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 metalPCE correlated with the adsorption energies of their molecular (non-dissociative) adsorption on the noble

Keywords： catalytic hydrodechlorination     electronic structure     metal nanoparticles     reaction mechanisms    

HTML PDF Collect

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-freeIts good electrocatalytic performance makes this material a promising alternative to conventional noblemetal-based catalysts (e.g., Pt) that are commonly used in HzOR-based fuel cells.

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

HTML PDF Collect

Influence of surface modified mixed metal oxide nanoparticles on the electrochemical and mechanical properties

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 1-14 doi: 10.1007/s11705-022-2176-9

Abstract: Newly synthesized functional nanoparticles, 3-amino-1,2,4-triazole (ATA)/SiO2–TiO2 were introduced to the polyurethane (PU) matrix. Electrochemical techniques were used to investigate the barrier properties of the synthesized PU–ATA/SiO2–TiO2 nanocomposite coated steel specimen. In natural seawater, electrochemical impedance spectroscopy experiments indicated outstanding protective behaviour for the PU–ATA/SiO2–TiO2 coated steel. The coating resistance (Rcoat) of PU–ATA/SiO2–TiO2 was determined to be 2956.90 kΩ·cm–2. The Rcoat of the PU–ATA/SiO2–TiO2 nanocomposite coating was found to be over 50% higher than the PU coating. The current measured along the scratched surface of the PU–ATA/SiO2–TiO2 coating was found to be very low (1.65 nA). The enhanced ATA/SiO2–TiO2 nanoparticles inhibited the entry of electrolytes into the coating interface, as revealed by scanning electron microscopy/energy dispersive X-ray spectroscopy and X-ray diffraction analysis of the degradation products. Water contact angle testing validated the hydrophobic nature of the PU–ATA/SiO2–TiO2 coating (θ = 115.4°). When the concentration of ATA/SiO2−TiO2 nanoparticles was 2 wt %, dynamic mechanical analysis revealed better mechanical properties. Therefore, the newly synthesised PU–ATA/SiO2–TiO2 nanocomposite provided excellent barrier and mechanical properties due to the addition of ATA/SiO2–TiO2 nanoparticles to the polyurethane, which inhibited material degradation and aided in the prolongation of the coated steel’s life.

Keywords： SiO2/TiO2 nanoparticle     nanocomposite coatings     dynamic mechanical analysis     electrochemical    

HTML PDF Collect

Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements for hydrogenation of nitroaromatics

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 461-474 doi: 10.1007/s11705-021-2072-8

Abstract: nitroaromatics is an environmentally friendly technology for aniline production, and it is crucial to develop noble-metal-freeThese findings provide a rational strategy for the development of highly active non-noble-metal hydrogenation

Keywords： bimetal strategy     oxygen vacancy     non-noble metal catalyst     hydrogenation     aromatic nitro compounds    

HTML PDF Collect

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, including the oxygen evolution reaction (OER) and glucose oxidation reaction (GOR). Herein, we prepared cobalt hydroxide nanoparticles (CoHP) and cobalt hydroxide nanosheets (CoHS) on nickel foam. In the electrocatalytic OER, CoHS shows an overpotential of 306 mV at a current density of 10 mA·cm . This is enhanced as compared with that of CoHP (367 mV at 10 mA·cm ). In addition, CoHS also exhibits an improved performance in the electrocatalytic GOR. The improved electrocatalytic performance of CoHS could be due to the higher ability of the two-dimensional nanosheets on CoHS in electron transfer. These results are useful for fabricating efficient catalysts for electrocatalytic oxidation reactions.

Keywords： electrocatalytic oxidation     cobalt hydroxide     nanosheet     water     glucose    

HTML PDF Collect

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: In this paper, a series of cobalt catalysts supported on reduced graphene oxide (rGO) nanosheets with the loading of 5, 15 and 30 wt-% were provided by the impregnation method. The activity of the prepared catalysts is evaluated in the Fischer-Tropsch synthesis (FTS). The prepared catalysts were carefully characterized by nitrogen adsorption-desorption, hydrogen chemisorption, X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, temperature programmed reduction, transmission electron microscopy, and field emission scanning electron microscopy techniques to confirm that cobalt particles were greatly dispersed on the rGO nanosheets. The results showed that with increasing the cobalt loading on the rGO support, the carbon defects are increased and as a consequence, the reduction of cobalt is decreased. The FTS activity results showed that the cobalt-time yield and turnover frequency passed from a maximum for catalyst with the Co average particle size of 15 nm due to the synergetic effect of cobalt reducibility and particle size. The products selectivity results indicated that the methane selectivity decreases, whereas the C selectivity raises with the increasing of the cobalt particle size, which can be explained by chain propagation in the primary chain growth reactions.

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

HTML PDF Collect

Hydro-pyrolysis of lignocellulosic biomass over alumina supported Platinum, Mo

Songbo He, Jeffrey Boom, Rolf van der Gaast, K. Seshan

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 155-161 doi: 10.1007/s11705-017-1655-x

Abstract: The nobel metal (Pt) and non-noble metal catalysts (Mo C and WC) were compared at 500 °C and atmosphericaliphatic and aromatic hydrocarbon formation (ca. 60%), showing the feasibility of using the cheap non-noble

Keywords： bio-oil     pyrolysis     hydro-deoxygenation (HDO)     non-noble metal catalysts     hydro-treatment    

HTML PDF Collect

Structural Studies on the Cu-H System under Compression Article

Jack Binns, Miriam Peña-Alvarez, Mary-Ellen Donnelly, Eugene Gregoryanz,Ross T. Howie, Philip Dalladay-Simpson

Engineering 2019, Volume 5, Issue 3,   Pages 505-509 doi: 10.1016/j.eng.2019.03.001

Abstract: Despite the high reactivity of hydrogen, the noble metals (Cu, Ag, and Au) display an outstanding resilienceMost notably, we report the highest hydrogen-content noble-metal hydride stable at room temperature toThis study furthers our understanding of hydrogen-transition metal chemistry and may find applicability

Keywords： High pressure     Hydrogen storage     Noble metal chemistry    

HTML PDF Collect

Performance of iron-air battery with iron nanoparticle-encapsulated C–N composite electrode

Frontiers in Energy doi: 10.1007/s11708-023-0913-5

Abstract: In this paper, iron nanoparticle-encapsulated C–N composite (NanoFe@CN) was synthesized by pyrolysis

Keywords： energy storage and conversion     metallic composites     nanocomposites     iron-air battery     iron anode    

HTML PDF Collect

Iron oxide nanoparticle-based theranostics for cancer imaging and therapy

Xiaoqing REN,Hongwei CHEN,Victor YANG,Duxin SUN

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 253-264 doi: 10.1007/s11705-014-1425-y

Abstract: Theranostic platform, which is equipped with both diagnostic and therapeutic functions, is a promising approach in cancer treatment. From various nanotheranostics studied, iron oxide nanoparticles have advantages since IONPs have good biocompatibility and spatial imaging capability. This review is focused on the IONP-based nanotheranostics for cancer imaging and treatment. The most recent progress for applications of IONP nanotheranostics is summarized, which includes IONP-based diagnosis, magnetic resonance imaging (MRI), multimodal imaging, chemotherapy, hyperthermal therapy, photodynamic therapy, and gene delivery. Future perspectives and challenges are also outlined for the potential development of IONP based theranostics in clinical use.

Keywords： theranostics     iron oxide nanoparticles     MRI     drug delivery     photothermal therapy     photodynamic therapy    

HTML PDF Collect

Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional electrocatalyst for overall water splitting

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1707-1717 doi: 10.1007/s11705-023-2308-x

Abstract: Water electrolysis technology is considered to be one of the most promising means to produce hydrogen. Herein, aiming at the problems of high overpotential and slow kinetics in water splitting, N-doped porous carbon nanofibers-coupled CoNi2S4 nanoparticles are prepared as bifunctional electrocatalyst. In the strategy, NaCl is used as the template to prepare porous carbon nanofibers with a large surface area, and sulfur vacancies are created to modulate the electronic structure of CoNi2S4. Electron spin resonance confirms the formation of abundant sulfur vacancies, which largely reduce the bandgap of CoNi2S4 from 1.68 to 0.52 eV. The narrowed bandgap is conducive to the migration of valence electrons and decreases the charge transfer resistance for electrocatalytic reaction. Moreover, the uniform distribution of CoNi2S4 nanoparticles on carbon nanofibers can prevent the aggregation and facilitate the exposure of electrochemical active sites. Therefore, the composite catalyst exhibits low overpotentials of 340 mV@100 mA·cm–2 for oxygen evolution reaction and 380 mV@100 mA·cm–2 for hydrogen evolution reaction. The assembled electrolyzer requires 1.64 V to achieve 10 mA·cm–2 for overall water-splitting with good long-term stability. The excellent performance results from the synergistic effect of porous structures, sulfur deficiency, nitrogen doping, and the well-dispersed active component.

Keywords： nanoparticle     sulfur vacancy     porous carbon nanofiber     transition metal sulfides     electrolysis    

HTML PDF Collect

Nanoparticle-enhanced coolants in machining: mechanism, application, and prospects

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0769-8

Abstract: Nanoparticle-enhanced coolants (NPECs) are increasingly used in minimum quantity lubrication (MQL) machining

Keywords： nanoparticle-enhanced coolant     minimum quantity lubrication     biolubricant     thermophysical properties    

HTML PDF Collect

Title Author Date Type Operation

Effect of noble metal nanoparticle size on C–N bond cleavage performance in hydrodenitrogenation: a study

Journal Article

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

Journal Article

Shape/size controlling syntheses, properties and applications of two-dimensional noble metal nanocrystals

Baozhen An,Mingjie Li,Jialin Wang,Chaoxu Li

Journal Article

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

Man ZHANG,Feng HE,Dongye ZHAO

Journal Article

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

Tao Zhang, Tewodros Asefa

Journal Article

Influence of surface modified mixed metal oxide nanoparticles on the electrochemical and mechanical properties

Journal Article

Zinc modification of Ni-Ti as efficient NiZnTi catalysts with both geometric and electronic improvements for hydrogenation of nitroaromatics

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

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

Hydro-pyrolysis of lignocellulosic biomass over alumina supported Platinum, Mo

Songbo He, Jeffrey Boom, Rolf van der Gaast, K. Seshan

Journal Article

Structural Studies on the Cu-H System under Compression

Jack Binns, Miriam Peña-Alvarez, Mary-Ellen Donnelly, Eugene Gregoryanz,Ross T. Howie, Philip Dalladay-Simpson

Journal Article

Performance of iron-air battery with iron nanoparticle-encapsulated C–N composite electrode

Journal Article

Iron oxide nanoparticle-based theranostics for cancer imaging and therapy

Xiaoqing REN,Hongwei CHEN,Victor YANG,Duxin SUN

Journal Article

Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional electrocatalyst for overall water splitting

Journal Article

Nanoparticle-enhanced coolants in machining: mechanism, application, and prospects

Journal Article