A5070340856- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- TiO2 Photocatalysis and Solar Cells
- Copper-based nanomaterials and applications
- CO2 Reduction Techniques and Catalysts
- Advanced Bandit Algorithms Research
- Gas Sensing Nanomaterials and Sensors
- ZnO doping and properties
- Machine Learning and Algorithms
- Catalysis and Oxidation Reactions
- Nanomaterials for catalytic reactions
- Electrocatalysts for Energy Conversion
- Advanced Nanomaterials in Catalysis
- Optimization and Search Problems
- Mesoporous Materials and Catalysis
- Auction Theory and Applications
- Catalysts for Methane Reforming
- Catalysis and Hydrodesulfurization Studies
- Ammonia Synthesis and Nitrogen Reduction
- Food Quality and Safety Studies
- Protein Interaction Studies and Fluorescence Analysis
- Quantum Dots Synthesis And Properties
- Iron oxide chemistry and applications
- Arsenic contamination and mitigation
- Reinforcement Learning in Robotics
First Affiliated Hospital of Zhengzhou University
2025
Wuhan University of Technology
2016-2025
Beijing Institute of Technology
2020-2024
Hefei University
2024
Tsinghua University
2018-2024
NAURA (China)
2019-2024
Shandong Normal University
2024
Anhui University of Science and Technology
2020-2023
Carnegie Mellon University
2019-2023
Microsoft (United States)
2023
TiO2 nanocrystals with tunable bulk/surface defects were synthesized and characterized TEM, XRD, BET, positron annihilation, photocurrent measurements. The effect of on photocatalytic activity was studied. It found for the first time that decreasing relative concentration ratio bulk to surface in could significantly improve separation efficiency photogenerated electrons holes, thus enhancing efficiency.
Artificial intelligence (AI) researchers have been developing and refining large language models (LLMs) that exhibit remarkable capabilities across a variety of domains tasks, challenging our understanding learning cognition. The latest model developed by OpenAI, GPT-4, was trained using an unprecedented scale compute data. In this paper, we report on investigation early version when it still in active development OpenAI. We contend (this of) GPT-4 is part new cohort LLMs (along with ChatGPT...
TiO2/CeO2 nanocomposites of anatase TiO2 nanoparticles supported on microsized mesoporous CeO2 were prepared and characterized by SEM, TEM, BET, XRD, Raman, XPS, diffuse reflectance UV–vis absorption. The formation the considerably enhances their catalytic activity for gas-phase oxidation benzene, one hazardous volatile organic compounds (VOCs), under irradiation a Xe lamp compared to pure TiO2. A solar-light-driven thermocatalysis is found nanocomposites. There synergetic effect between...
We have developed a novel and facile approach of hydrothermal redox reaction to prepare cryptomelane-type octahedral molecular sieve (OMS-2) nanorods with tunable concentration oxygen vacancy defects (OVDs). demonstrate giant OVD effect on the catalytic performance OMS-2. Increasing considerably enhances lattice reactivity, thus tremendously promoting activity for oxidation benzene.
Through comparing the photocatalytic performance of microscale ZnO, nano and Degussa P25 titania (P25), it was found that ZnO exhibited 2.6−35.7 times higher activity for photodegradation various dye pollutants than under both UV−visible visible irradiation showed much better photostability ZnO. The photocatalysts were characterized with XRD, Raman, BET, DRUV−vis, adsorption dye, photoelectrochemical measurement, PL. photocataltyic is attributed to efficiency generation, mobility, separation...
OMS-2 nanorods with tunable K+ concentration were prepared by a facile hydrothermal redox reaction of MnSO4, (NH4)2S2O8, and (NH4)2SO4 at 120 °C adding KNO3 different KNO3/MnSO4 molar ratios. The nanorod catalysts are characterized X-ray diffraction, transmission electron microscopy, N2 adsorption desorption, inductively coupled plasma, photoelectron spectrometry. effect on the lattice oxygen activity is theoretically experimentally studied density functional theory calculations CO...
The octahedral layered birnessite-type manganese oxide (OL-1) with the morphologies of nanoflowers, nanowires, and nanosheets were prepared characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission (TEM), thermogravimetric/differential calorimetry (TG/DSC), Brunnauer-Emmett-Teller (BET), inductively coupled plasma (ICP), photoelectron spectroscopy (XPS). OL-1 nanoflowers possess highest concentration oxygen vacancies or Mn(3+), followed by nanowires nanosheets....
We introduce phi-1, a new large language model for code, with significantly smaller size than competing models: phi-1 is Transformer-based 1.3B parameters, trained 4 days on 8 A100s, using selection of ``textbook quality" data from the web (6B tokens) and synthetically generated textbooks exercises GPT-3.5 (1B tokens). Despite this small scale, attains pass@1 accuracy 50.6% HumanEval 55.5% MBPP. It also displays surprising emergent properties compared to phi-1-base, our before finetuning...
Nanostructured AgI/TiO(2) photocatalyst was synthesized by a feasible approach with AgNO(3), LiI, and Ti(OBu)(4) characterized X-ray diffraction, transmission electron microscopy, angle-dependent photoelectron spectroscopy, diffusive reflectance UV-vis Raman photoluminescence, the Brunauer-Emmett-Teller technique. The results of characterization reveal that nanostructured has novel core/shell/shell nanostructure AgI/Ag-I(2)/TiO(2). Compared TiO(2) (P25) supported AgI, formation in...
The Pt/CeO2 nanocomposites of Pt nanoparticles partially confined in the mesopores microsized mesoporous CeO2 (1.0% Pt/CeO2-MM) or supported on surface nanocubes Pt/CeO2-NC) with same loading 1.0 wt % were prepared by impregnation Pt(NO3)2 aqueous solution, followed reduction NaBH4 solution. 1.0%Pt/CeO2-MM exhibits much higher catalytic activity for benzene oxidation than 1.0%Pt/CeO2-NC. Compared to 1.0% Pt/CeO2-NC, reaction temperatures T50 and T90 (corresponding a conversion = 50% 90%)...
Abstract Catalytic CO 2 reforming of CH 4 (CRM) to produce syngas (H and CO) provides a promising approach reducing global emissions the extensive utilization natural gas resources. However, rapid deactivation reported catalysts due severe carbon deposition at high reaction temperatures large energy consumption process hinder its industrial application. Here, method for almost completely preventing is by modifying surface Ni nanocrystals with silica clusters. The obtained catalyst exhibits...
The mesoporous nanorod-like ceria with high BET surface area of 121 m2/g is prepared by a facile method, microwave-assisted hydrolysis Ce(NO3)3·6H2O in presence urea. As compared to bulk ceria, its absorption edge significantly shifts the visible region band gap as low 2.75 eV due Ce3+. A novel strategy improving photocatalytic efficiency developed coupling oxygen ion conduction photocatalysis which UV–visible photons and thermal energy from Hg lamp were integrated. Under such...
Nanoflowers of octahedral layered birnessite (OL‐NF) were synthesized and characterized with a variety techniques. Remarkably, OL‐NF exhibits catalytic activity high efficiency for CO oxidation under irradiation the full solar spectrum, visible‐infrared, or infrared light. This highly efficient solar‐light originates from solar‐light‐driven thermocatalysis related to photothermal conversion thermocatalytic OL‐NF. A conceptually novel photoactivation effect is found significantly improve...
A nanocomposite of Co/Co–Al<sub>2</sub>O<sub>3</sub> nanosheets shows a high light-to-fuel efficiency and fuel production rate for photothermocatalytic CO<sub>2</sub> reduction using CH<sub>4</sub>.
TiO2-based nanorods (TNRs) were self-assembled on large graphitic carbon nitride (g-C3N4) sheets via the solvothermal-assisted route. The results demonstrated that effective anchoring of TNRs (a side length ca. 200–300 nm) was highly dispersed surface whole g-C3N4 sheets. shift in Ti 2p XPS core level spectrum indicated an increase net positive charge ions, ensuring formation interface between and g-C3N4. transferred from to effectively prevented recombination excited charges, which is...
Anatase TiO2 nanocrystals with internal pores are prepared by a novel facile microwave-assisted hydrolysis of mixture TiOCl2 and HF aqueous solutions, followed calcination at 400 °C. The characterized XRD, TEM, SEM, BET, EDS, XPS. formation mechanism the is discussed investigating role fluorine calcination. photocatalytic measurement shows that exhibit much higher activity for photodegradation crystal violet, methyl orange, 4-chlorophenol than solid nanocrystals. enhancement due to...
A unique Pt/CeO<sub>2</sub> nanocomposite exhibits solar-light-driven thermocatalytic activity for CO<sub>2</sub> reduction by methane with high light-to-fuel efficiency and production rates of H<sub>2</sub> CO.
Abstract Unique nanocomposites of NiCo alloy nanoparticles with Ni/Co molar ratios 1.86, 1.60, and 0.38 supported on Co‐doped Al 2 O 3 nanosheets are prepared by a facile approach. Very high fuel production rates CO ( r ) H H2 (70.53 63.46 mmol min −1 g light‐to‐fuel efficiency (η, 29.7%) achieved via photothermocatalytic reduction methane (CRM) Ni 1.60 Co/Co‐Al simply utilizing focused UV‐visible‐infrared (UV‐vis‐IR) illumination. also demonstrates values (50.99 39.72 as well η value...