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Effect of Alloying Metal Elements on the Valence Band of β-GaO: A First-Principles Study.
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January 2025
Group of the Fourth-generation Semiconductor Materials and Devices, Shenzhen Pinghu Laboratory, Shenzhen 518111, China.
β-GaO is a candidate semiconductor material for high-power electronics due to its ultrawide bandgap and high Baliga's figure of merit. However, its -type doping is extremely difficult because of its low and flat band dispersion at its valence band maximum (VBM). A few reports have predicted that the VBM of β-GaO can be enhanced via alloying a specific metal (M), which enables -type conduction.
View Article and Find Full Text PDFEnergy-level rich nanorings hybridizing Ag, Au and AgCl as high-performance SERS substrate for numerous molecules.
Talanta
January 2025
MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry, Fuzhou University, Fuzhou, China. Electronic address:
The current surface-enhanced Raman scattering (SERS) substrates typically feature a single energy level, posing challenges in coordinating electromagnetic enhancement (EM) and chemical enhancement (CM), thereby limiting the sensitive detection of numerous crucial target molecules. In this study, novel aggregated nanorings (a-NRs) hybridizing Ag, Au and AgCl are constructed as SERS substrates. On one hand, the obtained a-NRs exhibit robust localized surface plasmon resonance absorption, whose wavelength can be tuned to match three commonly used laser wavelengths (532, 633 and 785 nm) to gain strong EM effect.
View Article and Find Full Text PDFNear-infrared-II-driven Z-scheme heterojunction Polyglycolated MoS/CoFeO amplified edge potential for dual-mode imaging guided tumor synergistic therapy.
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School of Basic Medicine, General Hospital of Ningxia Medical University, Ningxia Medical University, Yinchuan 750004, China. Electronic address:
Targeting the peculiarities of tumor tissue microenvironment different from normal tissue, such as lower pH and overexpression of hydrogen peroxide is the key to effective treatment. In this study, acid-responsive Z-scheme heterojunctions polyglycolated MoS/CoFeO (MoS = molybdenum disulfide, CoFeO = cobalt ferrite) was synthesized using a two-step hydrothermal method, designated as MSCO-PEG, guided by dual modes of photoacoustic imagine (PAI) and nuclear magnetic imaging (MRI). MSCO-PEG (PEG = polyethylene glycol) responded to the acidic environment of tumor tissues and overexpression of hydrogen peroxide to turn on multimodal synergistic treatment of tumor cells under near-infrared-II (NIR-II) illumination.
View Article and Find Full Text PDFRegulation of the valleytronic properties in single-layer NbSeCl.
Phys Chem Chem Phys
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School of Physics and Electronic Information, Weifang University, Weifang 261061, China.
The regulation of the valleytronic properties of two-dimensional materials can contribute to the in-depth study of valley physics and improve its potential for applications in valleytronic devices. Herein, we systematically investigate the electronic properties and the modulation of the valleytronic properties in single-layer NbSeCl. Our results reveal that NbSeCl is a semiconductor with a 105.
View Article and Find Full Text PDFVisible Light Photolysis at Single Atom Sites in Semiconductor Perovskite Oxides.
J Am Chem Soc
January 2025
Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.
Designing catalysts with well-defined active sites with chemical functionality responsive to visible light has significant potential for overcoming scaling relations limiting chemical reactions over heterogeneous catalyst surfaces. Visible light can be leveraged to facilitate the removal of strongly bound species from well-defined single cationic sites (Rh) under mild conditions (323 K) when they are incorporated within a photoactive perovskite oxide (Rh-doped SrTiO). CO, a key intermediate in many chemistries, forms stable geminal dicarbonyl Rh complexes (Rh(CO)), that could act as site blockers or poisons during a catalytic cycle.
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