Results 51 to 60 of about 6,533 (216)

Exploring Enhanced Hydrolytic Dehydrogenation of Ammonia Borane with Porous Graphene-Supported Platinum Catalysts

Molecules
Graphene is a good support for immobilizing catalysts, due to its large theoretical specific surface area and high electric conductivity. Solid chemical converted graphene, in a form with multiple layers, decreases the practical specific surface area ...
Zhenbo Xu, Xiaolei Sun, Yao Chen
doaj   +1 more source

Pyrolytic synthesis of graphene-encapsulated zero-valent iron nanoparticles supported on biochar for heavy metal removal

Biochar, 2022
Highlights BC-G@Fe0 nanocomposite  was produced through two carbothermal reduction routes. The biomass impregnating-carbonizing route produced graphene-encapsulated iron carbide (Fe3C) nanoparticles.
Tharindu N. Karunaratne, R. M. Oshani Nayanathara, Chanaka M. Navarathna, Prashan M. Rodrigo, Rooban V. K. G. Thirumalai, Charles U. Pittman, Yunsang Kim, Todd Mlsna, Jilei Zhang, Xuefeng Zhang   +9 more
doaj   +1 more source

Vapor‐Assisted Catalysis Enables Precise Construction of MOF‐Derived Hierarchical Carbon Nanoarrays for High‐Performance Supercapacitors

Advanced Science, EarlyView.
A remote‐control strategy for catalyst design is unveiled for advanced carbon materials. During pyrolysis, zinc vapor from a physically separate source guides cobalt catalysts to construct a hierarchical carbon nanoarray. This approach prevents structural collapse while directing the dense growth of carbon nanotubes, yielding a material with ...
Xiaoyang Deng, Zihao Wan, Huan Xin, Xiaoguang Wang, Wenjuan Wang, Feixiong Chen, Liying Ma, Naiqin Zhao   +7 more
wiley   +1 more source

Theoretical analysis of nucleation and growth of ZnO nanostructures in vapour phase transport growth [PDF]

, 2011
This paper discusses the growth atmosphere, condensing species and nucleation conditions relevant to vapour phase transport growth of ZnO nanostructures, including the molecular parameters and thermodynamics of the gas phase ZnO molecule and its ...
ANTHROP D., Bauschlicher C., Biswas M., Borchers C., Brewer D., L., Byrne D., Chase M., Choi W. M.., Dayeh S. A., Enda McGlynn, Fancher C., Grabowska J., Im S., Kim J., Kubo M., Kumar R. T. R., Lide D., Markov I., Martin O. Henry, Ng K., Rao Y., Rojo J. C., Ruth B. Saunders, Shi N., Smith D. L., Stan G., Wander A., Wang J., Wang Z., Wessels B., Wongchoosuk C.   +30 more
core   +1 more source

Beyond Imperfect Match: Silicon/Graphite Hybrid Anodes for High‐Energy–Density Lithium‐Ion Batteries

Advanced Energy Materials, EarlyView.
Silicon/graphite (Si/Gr) hybrid anodes are limited by Si's large volume change and mismatch with Gr. This review offers mechanistic insights into imperfectly matched Si/Gr hybrid anodes, elucidating heterogeneous lithiation behavior and interfacial failure pathways, and thereby informing the design of durable, high‐energy–density lithium‐ion batteries.
Jing Li, Karol Viviana Mejía‐Centeno, Malik Dilshad Khan, Guifang Zeng, Lijie Ci, Andreu Cabot, Qing Sun   +6 more
wiley   +1 more source

3D printed porous biomass–derived SiCnw/SiC composite for structure–function integrated electromagnetic absorption

Virtual and Physical Prototyping, 2022
Ceramic-based absorbing composite is irreplaceable in high-temperature conditions. This work has fabricated a novel biomass–derived porous SiCnw/SiC composite for structure–function integrated electromagnetic wave (EMW) absorption through selective laser
Changshun Wang, Siqi Wu, Zhaoqing Li, Shuang Chen, Annan Chen, Chunze Yan, Yusheng Shi, Haibo Zhang, Pengyuan Fan   +8 more
doaj   +1 more source

Biomorphic ceramics from wood-derived precursors [PDF]

, 2017
Materials development is driven by microstructural complexity and, in many cases, inspired by biological systems such as bones, shells and wood. In one approach, one selects the main microstructural features responsible for improved properties and design
Martínez Fernández, Julián, Ramírez Rico, Joaquín, Singh, M.   +2 more
core   +1 more source

Carbothermal reduction of bauxite

, 2012
The commercial technologies for aluminium production include production of alumina from bauxite by the Bayer process and smelting of alumina to produce aluminium by Hall-Heroult process. The current technology is energy intensive, a major source of greenhouse gas emissions and harmful fluoride emissions.
openaire   +2 more sources

Bismuth‐Integrated Nitrogen‐Doped Carbon Nanostructures Enabling Broad Electrolyte Compatibility for Mg‐Ion Batteries

Batteries &Supercaps, EarlyView.
Bi nanoparticle (NP)‐integrated nitrogen‐doped carbon (Bi@nCN) is synthesized via a scalable one‐step carbothermal reduction. Bi NPs dispersed in the carbon matrix relieve stress during the two‐phase alloying reaction, resulting in the excellent electrochemical performance even in chloride‐free electrolytes, and highlighting Bi@nCN as a key enabler for
Woo Joo No, Jonghyun Han, Mingony Kim, Jihwan Choi, Kyung Yoon Chung, Kwan‐Young Lee, Si Hyoung Oh   +6 more
wiley   +1 more source

Automated Additive Construction (AAC) for Earth and Space Using In-situ Resources [PDF]

, 2016
Using Automated Additive Construction (AAC), low-fidelity large-scale compressive structures can be produced out of a wide variety of materials found in the environment.
Ali, Hisham, Andersen, Christian, Burgoyne, Hayden, Chambers, Wesley, Clinton, Raymond, De Kestellier, Xavier, Ebelt, Keye, Gerner, Shai, Hofmann, Douglas, Hogstrom, Kristina, Howe, Scott, Ilves, Erika, Jerves, Alex, Keenan, Ryan, Keravala, Jim, Khoshnevis, Behrokh, Kochmann, Dennis, Lim, Sungwoo, Metzger, Philip, Meza, Lucas, Mueller, Robert P., Nakamura, Takashi, Nelson, Andrew, Partridge, Harry, Pettit, Donald, Pyle, Rod, Reiners, Eric, Shapiro, Andrew, Singer, Russell, Tan, Wei-Lin, Vazquez, Noel, Wilcox, Brian, Zelhofer, Alex   +32 more
core