A5101530416- Mesoporous Materials and Catalysis
- Catalytic Processes in Materials Science
- Advanced Photocatalysis Techniques
- Advanced ceramic materials synthesis
- Polyoxometalates: Synthesis and Applications
- Zeolite Catalysis and Synthesis
- Metal-Organic Frameworks: Synthesis and Applications
- Semiconductor materials and devices
- Metal and Thin Film Mechanics
- Graphene research and applications
- Advanced materials and composites
- Carbon Nanotubes in Composites
- Arsenic contamination and mitigation
- MXene and MAX Phase Materials
- Semiconductor materials and interfaces
- Chalcogenide Semiconductor Thin Films
- Analytical chemistry methods development
- Perovskite Materials and Applications
- Diamond and Carbon-based Materials Research
- Electronic and Structural Properties of Oxides
- Advanced Thermoelectric Materials and Devices
- Electrochemical sensors and biosensors
- Catalysis and Hydrodesulfurization Studies
- Microplastics and Plastic Pollution
- Electrochemical Analysis and Applications
Institute of Oceanology
2018-2023
Qingdao National Laboratory for Marine Science and Technology
2023
Peking University
2016-2020
Institute of Microelectronics
2020
University of Cambridge
2017-2019
Zhejiang Normal University
2019
Chinese Academy of Sciences
2002-2017
China Datang Corporation (China)
2017
Beijing Jishuitan Hospital
2016
East China Jiaotong University
2016
We report a consistent set of ab initio calculations the electronic structures and electrical transport properties $p$-type thermoelectric compounds $R$Fe${}_{4}$Sb${}_{12}$, where $R$ is rattling filler selected from alkali metals (Na, K), alkaline earths (Ca, Sr, Ba), rare earth (La, Ce, Pr, Yb). Different single Sb-dominated light band in valence edge CoSb${}_{3}$, heavy bands Fe $d$ states also fall energy range close to edges $R$Fe${}_{4}$Sb${}_{12}$. These dominate band-edge density...
Abstract The morphological dependence of TiO2 nanotubes on the particle size and crystalline phase raw materials was observed, long uniform with lengths up to 500 nm were prepared from rutile nanoparticles (7.2 nm).
A series of titania modified mesoporous silicate MCM-41 (MCM-TiO2) samples with variable Ti/Si ratios have been synthesized from tetrabutyltitanate and calcined MCM-41. The were characterized by powder X-ray diffraction (XRD), FTIR spectroscopy, thermal analysis (DTA–TG), nitrogen adsorption–desorption at 77 K, transmission electron microscopy (TEM), solid state diffuse reflectance UV–VIS spectroscopy. It was found that cocondensation occurred pendant OH groups leading to Si–O–Ti bonds so...
Natural polyelectrolytes (NPs), including sodium lignosulfonate, humic acid and so forth, are reported for the first time to solubilize single-walled carbon nanotubes (SWNTs) in water through a noncovalent interaction. A variety of methods, transmission electron microscopy (TEM), visible–near-infrared (vis–NIR) spectra, Raman spectra zeta potential measurements, were used characterize NP-dispersed SWNT solutions. It is found that SWNTs can be exfoliated into thin bundles or individual tubes,...
We study the metal-catalyst-free growth of uniform and continuous graphene on different insulating substrates by microwave plasma-enhanced chemical vapor deposition (PECVD) with a gas mixture C<sub>2</sub>H<sub>2</sub>, NH<sub>3</sub>, H<sub>2</sub> at temperature 700–750 °C.
The highly toxic Cr(VI) is a critical component in the Chromated Copper Arsenate (CCA) formulations extensively employed as wood preservatives. Remediation of CCA mixed waste and discarded treated products significant challenge. We demonstrate that UV/TiO2 photocatalysis effectively reduces to less Cr(III) presence arsenate, As(V), copper, Cu(II). rapid conversion during occurs over range concentrations, solution pH at different Cr:As:Cu ratios. reduction follows pseudo-first order kinetics...
Abstract In this study, a high fluorescence sensitivity and selectivity, molecularly imprinted nanofluorescent polymer sensor (MIP@SiO 2 @QDs) was prepared using reverse microemulsion method. 2,4,6‐Trichlorophenol (2,4,6‐TCP) detected quenching. Tetraethyl orthosilicate (TEOS), quantum dots (QDs) 3‐aminopropyltriethoxysilane (APTS) were used as cross‐linker, signal sources functional monomer respectively. The the non‐imprinted (NIP@SiO characterized infra‐red (IR) analysis, X‐ray diffraction...
We report an effective approach for reducing the Schottky barrier height (SBH) in source and drain (S/D) contacts of WS<sub>2</sub>field-effect transistors (FETs) using ultrathin Al<sub>2</sub>O<sub>3</sub>interfacial layer between metal WS<sub>2</sub>.
In a digital-analog mixed neuromorphic system, various complex peripheral circuits may offset the integration and energy efficiency advantages of dense crossbar. To simplify circuits, self-activation neural network (SANN) is proposed based on passive crossbar array formed by rectified memristive (ReMem) cell. The ReMem cell dual-mode resistive switching device with VO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /TaO...
A series of titania-modified MCM-41 have been synthesized from varying three kinds titanium precursors [Ti(OBun)4, Ti(OBun)3(acac), Ti(OBun)2(acac)2] respectively and mesoporous molecular sieve MCM-41, in which titania existed as single or double layers. The samples were characterized by powder X-ray diffraction (XRD), nitrogen adsorption–desorption at 77 K, 29Si MAS NMR, FTIR Raman spectroscopy, well solid state diffuse reflectance UV–VIS spectroscopy. precursor was cocondensed with the...
Fermi level pinning at metal/n-InP interface and effective Schottky barrier height (ФB,eff) were optimized by inserting ultrathin dielectrics in this work. Comparing the inserted monolayer bilayer high-k dielectrics, we demonstrated that introduction of can further reduce ФB,eff (from 0.49 eV to 0.22 eV) than dielectric 0.32 even though overall thickness was thicker. The additional dipole formed high-k/high-k interfaces could be used expound mechanism. This work proposed an solution...
Metal contact to SiC is not easy modulate since the can be influenced by metal, termination of SiC, doping, and fabrication process. In this work, we introduce a method inserting thin Al2O3 layer between metal solve problem simply but effectively. The Al2O3/n-SiC interface composition was obtained with X-ray photoemission spectroscopy, electrical properties subsequently deposited contacts were characterized current-voltage method. We clearly demonstrate that insertion interfacial current...