Results 81 to 90 of about 13,531 (230)

A critical review of porous adsorbents for air separation: From fundamental insights to rational adsorbent design

AIChE Journal, EarlyView.
Abstract Air separation via selective adsorption using porous adsorbents offers energy‐efficient alternatives to cryogenic distillation for producing high‐purity O2 and N2. Adsorbent efficacy depends on balancing selectivity, durability, and performance consistency across varying conditions. This comprehensive review critically discusses the design and
Tianqi Wang, Daisong Chen, Tianyi Zhang, Boyu Zhang, Ruiqiang Wang, Zhengdong Liu, Mei Hong, Youssef Belmabkhout, Qinfen Gu, Jin Shang   +9 more
wiley   +1 more source

Correlated Electrical Conductivities to Chemical Configurations of Nitrogenated Nanocrystalline Diamond Films

Nanomaterials, 2022
Diamond is one of the fascinating films appropriate for optoelectronic applications due to its wide bandgap (5.45 eV), high thermal conductivity (3320 W m−1·K−1), and strong chemical stability. In this report, we synthesized a type of diamond film called
Abdelrahman Zkria, Hiroki Gima, Eslam Abubakr, Ashraf Mahmoud, Ariful Haque, Tsuyoshi Yoshitake   +5 more
doaj   +1 more source

Electronic properties of metal-induced gap states formed at alkali-halide/metal interfaces [PDF]

, 2005
The spatial distribution and site- distribution of metal induced gap states (MIGS) are studied by thickness dependent near edge x-ray absorption fine structure (NEXAFS) and comparing the cation and anion edge NEXAFS.
Genki Yoshikawa, Koichiro Saiki, Manabu Kiguchi, P. W. Anderson, Susumu Ikeda   +4 more
core   +2 more sources

Photochemistry of Aromatic N‐Oxides in Water Probed by Time‐Resolved X‐ray Absorption Spectroscopy

Chemistry – A European Journal, EarlyView.
Time‐resolved XAS at the nitrogen and oxygen K‐edges is applied to the photorearrangement of two N‐oxides in water. Pyridine N‐oxide rapidly forms the oxaziridine isomer. Pyridazine N‐oxide undergoes ring opening to the diazo compound, without any evidence of intermediates.
Maximilian Paradiz Domínguez, Robby Büchner, Mattis Fondell, Albert M. Brouwer   +3 more
wiley   +1 more source

Single-Shot near Edge X-ray Fine Structure (NEXAFS) Spectroscopy Using a Laboratory Laser-Plasma Light Source

Materials, 2018
We present a proof of principle experiment on single-shot near edge soft X-ray fine structure (NEXAFS) spectroscopy with the use of a laboratory laser-plasma light source.
P. Wachulak, M. Duda, T. Fok, A. Bartnik, Zhanshan Wang, Qiushi Huang, A. Sarzyński, A. Jancarek, H. Fiedorowicz   +8 more
semanticscholar   +1 more source

Electronic and magnetic structure of Fe/Co-doped multiwalled carbon nanotubes using X-ray absorption and magnetic circular dichroism spectroscopy

AIP Advances
Multi-walled carbon nanotubes (MWCNTs), synthesized using the microwave plasma-enhanced chemical vapor deposition (MPCVD) technique, have been examined to elucidate their electronic and magnetic structures through near-edge X-ray absorption fine ...
Sanjeev Gautam, Priyal Singhal, Pardeep K. Thakur, Saji Augustine, Navdeep Goyal, N. B. Brookes, Jae-Young Kim, Keun Hwa Chae   +7 more
doaj   +1 more source

The local structure of SO2 and SO3 on Ni(1 1 1): a scanned-energy mode photoelectron diffraction study [PDF]

, 2009
O 1s and S 2p scanned-energy mode photoelectron diffraction (PhD) data, combined with multiple-scattering simulations, have been used to determine the local adsorption geometry of the SO2 and SO3 species on a Ni(1 1 1) surface.
Booth, Cao, Clark, D.I. Sayago, D.P. Woodruff, Dippel, E.A. Kröger, F. Allegretti, Fritzsche, Fritzsche, Harrison, Jackson, Jackson, K.A. Hogan, Lüdecke, M.J. Knight, Pendry, Sakai, Sawhney, T.J. Lerotholi, Terada, W. Unterberger, Wilde, Woodruff, Woodruff, Woodruff, Woodruff, Yokoyama, Yokoyama   +28 more
core   +1 more source

Nitrogen doping of TiO2 photocatalyst forms a second eg state in the Oxygen (1s) NEXAFS pre-edge

, 2011
Close inspection of the pre-edge in oxygen near-edge x-ray absorption fine structure spectra of single step, gas phase synthesized titanium oxynitride photocatalysts with 20 nm particle size reveals an additional eg resonance in the VB that went ...
Asahi R., Batzill M., Chen X., Chen X., Chen X., Crocombette J. P., de Groot F. M. F., de Groot F. M. F., Di Valentin C., Fujishima A., Jan J. C., Lee J.-Y., Mastelaro V. R., Nachimuthu P., Nakamura R., Ra W., Stewart S.   +16 more
core   +1 more source

NEXAFS spectroscopy and site-specific fragmentation of N -methylformamide, N,N -dimethylformamide, and N,N -dimethylacetamide [PDF]

, 2016
Near-edge X-ray absorption fine-structure (NEXAFS) spectra measured at the C, N, and O K-edges for three molecules containing the amide moiety, N-methylformamide (HCONHCH3), N,Ndimethylformamide (HCON(CH3)2), and N,N-dimethylacetamide (CH3CON(CH3)2 ...
Alagia, Michele, Feifel, Raimund, Richter, Robert, Salén, Peter, SCHIO, LUCA, STRANGES, Stefano, Yatsyna, Vasyl, Zhaunerchyk, Vitali   +7 more
core   +1 more source

Universal Fabrication of Graphene/Perovskite Oxide Hybrid Heterostructures

Small Structures, EarlyView.
This study presents a universal, catalyst‐free method for the direct growth of monolayer graphene on perovskite oxides without the need for transfer. The process yielded uniform graphene formation across different insulating substrates under identical conditions, revealing a substrate‐independent growth mechanism.
Yeongju Choi, Seungjin Lee, Dongwon Shin, Sukhoon Sim, Min‐Hyoung Jung, Dirk Wulferding, Minjae Kim, Jaesik Eom, Myeesha Mostafa, Wonhee Ko, SeungNam Cha, Jungseek Hwang, Hu Young Jeong, Ki Kang Kim, Woo Seok Choi   +14 more
wiley   +1 more source