Results 101 to 110 of about 52,585 (261)

CO2‐Driven Synthesis of Holey Edge‐Carboxylated Graphene for Tunable Electronic Interactions in Cu–CeO2‐Catalyzed Water‐Gas Shift Reaction

Carbon Energy, EarlyView.
Holey‐structured, edge‐carboxylated graphene with a controlled specific surface area was synthesized using an environmentally friendly, CO2‐activated, KOH‐free ball‐milling process. ABSTRACT Graphene, notable for its high specific surface area, is ideal for catalyst support but faces challenges under harsh thermal catalytic conditions.
Seon‐Yong Ahn, I‐Jeong Jeon, Won‐Jun Jang, In‐Yup Jeon, Jae‐Oh Shim, Hyun‐Seog Roh   +5 more
wiley   +1 more source

Tracking primary thermalization events in graphene with photoemission at extreme timescales

, 2015
Direct and inverse Auger scattering are amongst the primary processes that mediate the thermalization of hot carriers in semiconductors. These two processes involve the annihilation or generation of an electron-hole pair by exchanging energy with a third
Aeschlimann, S., Ast, C., Cacho, C., Calegari, F., Cavalleri, A., Chapman, R., Chavez Cervantes, M., Gierz, I., Link, S., Springate, E., Starke, U.   +10 more
core   +1 more source

Probing the Influence of Sulfur–Aromatic Interactions on the Electronic Structure of Gas‐Phase Peptides

Chemistry – A European Journal, EarlyView.
Just as fingerprints reveal identity, spectroscopic fingerprints reveal molecular secrets. In this article, we show parts of the unique fingerprint of the sulfur–aromatic interaction. By measuring how this force alters the electronic structure of gas‐phase peptides, we provide a fundamental understanding of interactions that give insights into the ...
Laura Pille, Carlos Ortiz‐Mahecha, Bart Oostenrijk, Juliette Leroux, Marion Girod, Konstantin Hirsch, Luke MacAleese, Robert Horst Meißner, Debora Scuderi, Isaak Unger, Vicente Zamudio‐Bayer, Sadia Bari, Lucas Schwob   +12 more
wiley   +1 more source

Covariance mapping of two-photon double core hole states in C2H2 and C2H6 produced by an x-ray free electron laser

New Journal of Physics, 2015
Few-photon ionization and relaxation processes in acetylene (C _2 H _2 ) and ethane (C _2 H _6 ) were investigated at the linac coherent light source x-ray free electron laser (FEL) at SLAC, Stanford using a highly efficient multi-particle correlation ...
M Mucke, V Zhaunerchyk, L J Frasinski, R J Squibb, M Siano, J H D Eland, P Linusson, P Salén, P v d Meulen, R D Thomas, M Larsson, L Foucar, J Ullrich, K Motomura, S Mondal, K Ueda, T Osipov, L Fang, B F Murphy, N Berrah, C Bostedt, J D Bozek, S Schorb, M Messerschmidt, J M Glownia, J P Cryan, R N Coffee, O Takahashi, S Wada, M N Piancastelli, R Richter, K C Prince, R Feifel   +32 more
doaj   +1 more source

Ultrafast Transitions in X‐Ray Irradiated Solids

Contributions to Plasma Physics, EarlyView.
ABSTRACT In this review, we present current developments on modeling ultrafast transitions in solids triggered by intense, atto‐ to femtosecond pulses from X‐ray free electron lasers. This specific irradiation regime requires dedicated simulation tools based on theoretical and computational methods, involving the elements of classical and quantum ...
Sebastião Antunes, Konrad J. Kapcia, Vladimir Lipp, Beata Ziaja   +3 more
wiley   +1 more source

Unraveling Mechanisms and Engineering Strategies for Superior Photocarrier Dynamics Toward Efficient Photocatalysis

EcoEnergy, EarlyView.
Despite its potential, photocatalysis is limited by inefficient charge carrier separation and transport. This article reviews the mechanisms, characterization methods, and strategies for improvement, concluding with future challenges in the field. ABSTRACT Photocatalysis offers a promising solution to environmental and renewable energy issues. However,
Leqi Cheng, Xin Wang, Yishen Zhang, Xinrong Zhang, Jung‐Ho Yun, Songcan Wang   +5 more
wiley   +1 more source

Water‐Activated Proton Transfer Mediated by Subnanoscale CeO2‐Cu2O Interfaces for Near‐Unity CH4 Selectivity in Photothermal CO2 Reduction

EcoEnergy, EarlyView.
Subnanoscale CeO2‐Cu2O particles can efficiently catalyze the hydrogenation of the key intermediate *CO to CH4 at an impressive rate of 2818 μmol g−1 h−1 in photothermal CO2 reduction. ABSTRACT Water‐mediated photothermal CO2 reduction to CH4 is promising for renewable energy storage and carbon neutrality, but its selectivity and efficiency are limited
Siyang Nie, Liang Wu, Qingda Liu, Xun Wang   +3 more
wiley   +1 more source

Highly Efficient Sky‐Blue Perovskite Quantum Dot Light‐Emitting Diodes via Ligand‐Assisted Trap‐State Passivation

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Highly efficient sky‐blue LED with EQE of 13.6% is realized through short‐chain ligand tridecylamine treaded perovskite quantum dots, due to the suppressed non‐radiative recombination from the trap state. These results indicate that the ligand with strong affinity can facilitate the surface defects passivation, resulting in enhanced optical properties,
Mengyu Zhu, Wei Gao, Qi Wei, Lyuchao Zhuang, Zhiwen Cheng, Mengjuan Sun, Chao Xu, Rui Zhi, Junyi Chen, Jingshan Hou, Ye Zhu, Jun Yin, Mingjie Li, Siu Fung Yu, Yongzheng Fang   +14 more
wiley   +1 more source

Growth of bilayer transition metal dichalcogenides at controlled locations

APL Materials
Layered transition metal dichalcogenide (TMD) materials have attracted great interest for applications in electronics. Here, we report a method to synthesize TMD materials at controlled locations with the desired layer number.
Chengyu Wen, Carl H. Naylor, Kevin P. O’Brien, Adedapo Oni, Mahmut S. Kavrik, Yeonjoon Suh, A. T. Charlie Johnson Jr.   +6 more
doaj   +1 more source

Rocksalt MgS solar blind ultra-violet detectors

AIP Advances, 2012
Studies using in-situ Auger electron spectroscopy and reflection high energy electron diffraction, and ex-situ high resolution X-ray diffraction and electron backscatter diffraction reveal that a MgS thin film grown directly on a GaAs (100) substrate by ...
Ying-Hoi Lai, Wai-Yip Cheung, Shu-Kin Lok, George K. L. Wong, Sut-Kam Ho, Kam-Weng Tam, Iam-Keong Sou   +6 more
doaj   +1 more source