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Mechanism of methanol decomposition on the Pd/WC(0001) surface unveiled by first-principles calculations

Jinhua Zhang, Yuanbin She

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1052-1064 doi: 10.1007/s11705-019-1908-y

Abstract: In this study, the decomposition of methanol into the CO and H species on the Pd/tungsten carbide (WC)(0001) surface is systematically investigated using periodic density functional theory (DFT) calculations/WC(0001) surface.Thus, the most probable methanol decomposition pathway on the Pd/WC(0001) surface is CH OH → CH OH →The present study demonstrates that the synergistic effect of WC (as carrier) and Pd (as catalyst) alters

Keywords: density functional theory     methanol     direct methanol fuel cells     WC(0001)-supported Pd monolayer     decomposition    

Pd-Ni nanoparticles supported on titanium oxide as effective catalysts for Suzuki-Miyaura coupling reactions

Dongxu Han, Zhiguo Zhang, Zongbi Bao, Huabin Xing, Qilong Ren

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 24-31 doi: 10.1007/s11705-017-1669-4

Abstract: We have successfully prepared a series of Pd-Ni/TiO catalysts by a one-step impregnation-reduction methodAmong these catalysts with different compositions of Ni and Pd, the one with the Ni:Pd ratio of 2.95Small monodispersed Pd-Ni bimetallic nanoparticles were loaded on the surface of titanium oxide nanopowderThe XPS analysis demonstrated that Pd exists as 31% Pd(II) species and 69% Pd(0) species and all nickelThe prepared Pd-Ni/TiO exhibited enhanced catalytic activity compared to an equal amount of Pd/TiO

Keywords: Pd-Ni bimetallic nanoparticles     nanocatalysis     Suzuki-Miyaura reaction     titanium oxide    

Pd nano-catalyst supported on biowaste-derived porous nanofibrous carbon microspheres for efficient catalysis

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1289-1300 doi: 10.1007/s11705-023-2299-7

Abstract: N/O-containing groups, as carriers for the manufacture of a highly dispersed, efficient and stable Pdstructure, defect presence and large surface area could promote the transport of electrons between NCM and Pd, thereby endowing NCM supported Pd catalyst with high catalytic activity.The NCM supported Pd catalyst was employed in the degradation of some representative dyes and the chemoselective

Keywords: biowaste chitin     nanofibrous     palladium     nano-catalyst     catalysis    

Nitrogen-doped carbon black supported Pd nanoparticles as an effective catalyst for formic acid electro-oxidation

Na SUN, Minglei WANG, Jinfa CHANG, Junjie GE, Wei XING, Guangjie SHAO

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 310-317 doi: 10.1007/s11708-017-0491-5

Abstract: Pd nanoparticles supported on nitrogen doped carbon black (Vulcan XC-72R) with two different levels ofThe results indicate that the different nitrogen doping contents in Pd/N-C catalysts have a significantA higher N content facilitates the uniform dispersion of Pd nanoparticles on carbon black with narrowThe peak current density of the Pd/N-C (high) catalyst is 1.27 and 2.31 times that of the Pd/N-C (low) and homemade Pd/C-H catalyst.

Keywords: formic acid electro-oxidation     nitrogen doped     oxidized carbon     nitrogen content    

Pd/Fe3O4 supported on bio-waste derived cellulosic-carbon as a nanocatalyst for C–C coupling and electrocatalytic

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1514-1525 doi: 10.1007/s11705-022-2158-y

Abstract: The current work describes the synthesis of a new bio-waste derived cellulosic-carbon supported-palladiumnanoparticles enriched magnetic nanocatalyst (Pd/Fe3O4@C) using a simple multi-stepUnder mild reaction conditions, the Pd/Fe3O4@C magnetic nanocatalyst demonstratedAlso, the Pd/Fe3O4@C magnetic nanocatalyst exhibited excellent catalytic activityAlso, we explored the use of Pd/Fe3O4@C magnetic nanocatalyst as an electrocatalyst

Keywords: bio-waste     cellulosic-carbon     Pd/Fe3O4     Hiyama cross-coupling     hydrogen evolution    

2-Aminopyridine functionalized cellulose based Pd nanoparticles: An efficient and ecofriendly catalyst

Peibo Hu,Yahao Dong,Xiaotian Wu,Yuping Wei

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3,   Pages 389-395 doi: 10.1007/s11705-016-1575-1

Abstract: A palladium catalyst supported on 2-aminopyridine functionalized cellulose was synthesized and fullygood yields, and easily recycled by simple filtration after reaction without the loss of metal Pd.

Keywords: cellulose-supported     2-aminopyridine     palladium nanoparticles     ecofriendly catalyst     Suzuki cross-coupling    

different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine material (WC-Co

Jagdeep SINGH,Rajiv Kumar SHARMA

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 374-387 doi: 10.1007/s11465-016-0388-8

Abstract: operability analysis is employed to identify the inherent safety factors associated with powder-mixed EDM of WC-Co

Keywords: WC     hazard and operability analysis (HAZOP)     discharging     aerosol concentration     dielectrics     powders    

WC coatings as candidate to hard chrome plating: characterization of fatigue and friction and wear

Zhou Kesong,Deng Chunming,Liu Min

Strategic Study of CAE 2009, Volume 11, Issue 10,   Pages 48-54

Abstract: mdash;Ni—Bronze alloy for bare and coated 300 M steel were investigated with the application of WCThe results indicated that both WC-17Co and WC-10Co4Cr coated 300 M steel exhibited comparable fatigueFatigue crack in WC coating deflected along the interface between WC coating and 300 M steel; while fatiguewhen chrome plating was against Al—Ni—Bronze alloy; slight volume loss was obtained for WCcoating, and the volume loss of Al—Ni—Bronze alloy against WC coating was only 1/50~1/100

Keywords: 300 M steel     high velocity air fuel     WC coating     chrome plating     fatigue     friction and wear    

Synthesis, physicochemical characterizations and catalytic performance of Pd/carbon-zeolite and Pd/carbon-CeO

Zeinab JAMALZADEH, Mohammad HAGHIGHI, Nazli ASGARI

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 365-381 doi: 10.1007/s11783-013-0520-5

Abstract: In this work, xylene removal from waste gas streams was investigated via catalytic oxidation over Pd/carbon-zeolite and Pd/carbon-CeO nanocatalysts.

Keywords: Pd/carbon-CeO2     Pd/carbon-zeolite     pine cone     ZnCl2     catalytic oxidation     xylene    

Thermal transport properties of monolayer phosphorene: a mini-review of theoretical studies

Guangzhao QIN, Ming HU

Frontiers in Energy 2018, Volume 12, Issue 1,   Pages 87-96 doi: 10.1007/s11708-018-0513-y

Abstract: Phosphorene, a two-dimensional (2D) elemental semiconductor with a high carrier mobility and intrinsic direct band gap, possesses fascinating chemical and physical properties distinctively different from other 2D materials. Its rapidly growing applications in nano-/opto-electronics and thermoelectrics call for fundamental understanding of the thermal transport properties. Considering the fact that there have been so many studies on the thermal transport in phosphorene, it is on emerging demand to have a review on the progress of previous studies and give an outlook on future work. In this mini-review, the unique thermal transport properties of phosphorene induced by the hinge-like structure are examined. There exists a huge deviation in the reported thermal conductivity of phosphorene in literature. Besides, the mechanism underlying the deviation is discussed by reviewing the effect of different functionals and cutoff distance in calculating the thermal transport properties of phosphorene. It is found that the (vdW) interactions play a key role in the formation of resonant bonding, which leads to long-ranged interactions. Taking into account of the vdW interactions and including the long-ranged interactions caused by the resonant bonding with large cutoff distance are important for getting the accurate and converged thermal conductivity of phosphorene. Moreover, a fundamental insight into the thermal transport is provided based on the review of resonant bonding in phosphorene. This mini-review summarizes the progress of the thermal transport in phosphorene and gives an outlook on future horizons, which would benefit the design of phosphorene based nano-electronics.

Keywords: thermal transport     phosphorene     resonant bonding    

On the monolayer dispersion behavior of Co3O4 on HZSM-5 support: designing applicable

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1741-1754 doi: 10.1007/s11705-023-2332-x

Abstract: Based on monolayer dispersion theory, Co3O4/ZSM-5 catalysts with different loadingsCo3O4 can spontaneously disperse on HZSM-5 support with a monolayer dispersionBelow the monolayer dispersion threshold, Co3O4 is finely dispersed as sub-monolayersharmful to the reaction performance. 4% Co3O4/ZSM-5, the catalyst close to the monolayer

Keywords: Co3O4/ZSM-5     NOx-SCR by NH3     monolayer dispersion    

Metabolic interventions combined with CTLA-4 and PD-1/PD-L1 blockade for the treatment of tumors: mechanisms

Frontiers of Medicine   Pages 805-822 doi: 10.1007/s11684-023-1025-7

Abstract: To date, immune checkpoint inhibitors (ICIs) of CTLA-4 and PD-1/PD-L1 represent the main class of immunotherapyBlockade of CTLA-4 and PD-1/PD-L1 has shown remarkable efficacy in several specific types of cancers,the generalized mechanism of targeting cancer metabolism at three crucial immune checkpoints (CTLA-4, PD-1, and PD-L1) to influence ICB therapy and propose potential combined immunotherapeutic strategies co-targeting

Keywords: CTLA-4     PD-1     PD-L1     immune checkpoint blockade (ICB)     metabolic reprogramming     combined tumor therapeutic    

PD-1/PD-L1 blockade in cervical cancer: current studies and perspectives

Yumeng Wang, Guiling Li

Frontiers of Medicine 2019, Volume 13, Issue 4,   Pages 438-450 doi: 10.1007/s11684-018-0674-4

Abstract: Checkpoint blockades targeting the PD-1/PD-L1 axis have achieved effective clinical responses with acceptableIn this review, we summarize recent advances in our understanding of the PD-1/PD-L1 signaling pathway, including the expression patterns of PD-1/PD-L1 and potential PD-1/PD-L1-related therapeutic strategies

Keywords: PD-1     PD-L1     immune checkpoint blockade antibody     immunotherapy     cervical cancer    

Optimization of multi machining characteristics in WEDM of WC-5.3%Co composite using integrated approach

Kamal JANGRA, Sandeep GROVER, Aman AGGARWAL

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3,   Pages 288-299 doi: 10.1007/s11465-012-0333-4

Abstract: In present work, intricate machining of WC-5.3%Co composite on WEDM has been reported.

Keywords: tungsten carbide composite     wire electrical discharge machining (WEDM)     Taguchi method     grey relational analysis (GRA)     entropy measurement method    

Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al

Hongbo NA,Tianle ZHU,Zhiming LIU,Yifei SUN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 659-665 doi: 10.1007/s11783-013-0613-1

Abstract: The effect of Zr on the catalytic performance of Pd/γ-Al O for the methane combustion was investigatedThe results show that the addition of Zr can improve the activity and stability of Pd/γ-Al O catalystThe active phase of methane combustion over supported palladium catalyst is the Pd /Pd mixture.Zr addition inhibits Pd aggregation and enhances the redox properties of active phase Pd / Pd .(Pd / Pd ).

Keywords: Pd-Zr/Al2O3     methane     catalytic combustion     catalyst regeneration    

Title Author Date Type Operation

Mechanism of methanol decomposition on the Pd/WC(0001) surface unveiled by first-principles calculations

Jinhua Zhang, Yuanbin She

Journal Article

Pd-Ni nanoparticles supported on titanium oxide as effective catalysts for Suzuki-Miyaura coupling reactions

Dongxu Han, Zhiguo Zhang, Zongbi Bao, Huabin Xing, Qilong Ren

Journal Article

Pd nano-catalyst supported on biowaste-derived porous nanofibrous carbon microspheres for efficient catalysis

Journal Article

Nitrogen-doped carbon black supported Pd nanoparticles as an effective catalyst for formic acid electro-oxidation

Na SUN, Minglei WANG, Jinfa CHANG, Junjie GE, Wei XING, Guangjie SHAO

Journal Article

Pd/Fe3O4 supported on bio-waste derived cellulosic-carbon as a nanocatalyst for C–C coupling and electrocatalytic

Journal Article

2-Aminopyridine functionalized cellulose based Pd nanoparticles: An efficient and ecofriendly catalyst

Peibo Hu,Yahao Dong,Xiaotian Wu,Yuping Wei

Journal Article

different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine material (WC-Co

Jagdeep SINGH,Rajiv Kumar SHARMA

Journal Article

WC coatings as candidate to hard chrome plating: characterization of fatigue and friction and wear

Zhou Kesong,Deng Chunming,Liu Min

Journal Article

Synthesis, physicochemical characterizations and catalytic performance of Pd/carbon-zeolite and Pd/carbon-CeO

Zeinab JAMALZADEH, Mohammad HAGHIGHI, Nazli ASGARI

Journal Article

Thermal transport properties of monolayer phosphorene: a mini-review of theoretical studies

Guangzhao QIN, Ming HU

Journal Article

On the monolayer dispersion behavior of Co3O4 on HZSM-5 support: designing applicable

Journal Article

Metabolic interventions combined with CTLA-4 and PD-1/PD-L1 blockade for the treatment of tumors: mechanisms

Journal Article

PD-1/PD-L1 blockade in cervical cancer: current studies and perspectives

Yumeng Wang, Guiling Li

Journal Article

Optimization of multi machining characteristics in WEDM of WC-5.3%Co composite using integrated approach

Kamal JANGRA, Sandeep GROVER, Aman AGGARWAL

Journal Article

Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al

Hongbo NA,Tianle ZHU,Zhiming LIU,Yifei SUN

Journal Article