Tong Xu

Nanjing University of Aeronautics and Astronautics

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Jie Bai

Inner Mongolia University of Technology

Chunping Li

Inner Mongolia University of Technology

Caixia Kan

Nanjing University of Aeronautics and Astronautics

Mingming Jiang

Chinese PLA General Hospital

Haiou Liang

Inner Mongolia University of Technology

Peng Wan

Chongqing University

Daning Shi

Nanjing University of Aeronautics and Astronautics

Weiyan Sun

Inner Mongolia University of Technology

Haiou Liang

Inner Mongolia University of Technology

Kai Tang

Nanjing University of Aeronautics and Astronautics

Cooperative Institutions

Inner Mongolia University of Technology

Chinese Academy of Sciences

Nanjing University of Aeronautics and Astronautics

Mongolian University of Science and Technology

University of Chinese Academy of Sciences

Shandong University

Wenzhou University

Wuhan Institute of Technology

Jilin University

Beihang University

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Ce-doped ZIF-67 derived Co3O4 nanoparticles supported by carbon nanofibers: A synergistic strategy towards bifunctional oxygen electrocatalysis and Zn-Air batteries

Journal of Alloys and Compounds (2021)

Xingwei Sun Tong Xu Weiyan Sun Jie Bai Chunping Li

Overpotential

Oxygen evolution

Electrospinning

Carbon fibers

10.1016/j.jallcom.2021.162778

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Citations (36)

Application of Nonlinear Principal Component Analysis to Seasonal Precipitation Anomaly over China

Nanjing Qixiang Xueyuan xuebao (2008)

Tong Xu

Nonlinear characteristics of the precipitation anomaly over china during the last five decades were investigated by applying a back-propogation neural network-based nonlinear principal component analysis(NLPCA) method to the seasonal rainfall anomaly data.The results show that the NLPCA could describe more general characteristics of the low-dimension structure of precipitation.The precipitation anomaly of each season has a certain extent nonlinear space pattern,but the nonlinearity of autumn and winter precipitation is weaker than spring's and summer's.The spatial pattern based on the leading NLPCA mode approximation manifests obvious asymmetry when the nonlinear principal component takes the maximum and minimum value.The leading NLPCA made approximation is more realistic to the original precipitation anomaly data than the leading PCA mode approximation,and changes with season.

Anomaly (physics)

Mode (computer interface)

Source

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Carbon nanofibers anchored LZ-276 zeolite supported Pd-Cu bimetallic catalyst for Suzuki-Miyaura coupling reaction

Inorganic Chemistry Communications (2023)

Miaomiao Li Ying Li Chunping Li Tong Xu Yinghui Sun

Bimetallic strip

Bimetal

Noble metal

Carbon fibers

Suzuki reaction

10.1016/j.inoche.2023.111441

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Citations (2)

Boosting visible-light-driven photocatalytic H2 evolution of C/Znln2S4 hollow tubes by Ni doping

Fuel (2022)

Guanqiong Li Haiou Liang Haiyan Yu Tong Xu Jie Bai

Overpotential

Visible spectrum

Photoelectric effect

10.1016/j.fuel.2022.125205

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Citations (22)

One-Step Mo-Doped Praseodymium Oxide Construction of Oxygen Vacancies for Efficient Photothermal Co-Catalytic Suzuki Coupling Reaction

Fu Wang Chunping Li Tong Xu Ying Li Yinghui Sun

The photothermal synergistic catalytic Suzuki coupling reaction is a sustainable approach to generate biphenyl compounds using clean and renewable solar energy. The one-step Mo doping engineering resulted in more oxygen vacancies and surface free electrons on the PrxOy surface of hollow porous nanotube morphology. Subsequently, energy-efficient and environmentally friendly catalysts (PdO/PrxOy-Moz) with higher catalytic activity were successfully prepared by deposition precipitation method. The concave and convex surfaces of the carriers could better capture visible light. Mo doping greatly extends the visible absorption range of PrxOy. More Ovs defects in the PrxOy-Moz carrier inhibit the complexation of photogenerated electron-hole pairs and induce the transfer of free and photogenerated electrons to Pd. The electron-rich Pd accelerated the oxidative addition step of aryl halides to aryl phenylboronic acids, which greatly improved the catalytic performance of PdO/PrxOy-Moz in the photothermal co-catalytic Suzuki coupling reaction.

Praseodymium

Suzuki reaction

10.2139/ssrn.4459405

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Citations (1)

Perpendicularly Reversed Polarization Sensitivity of Double‐faced Photodetection based on Sb₂Se₃ Microbelt

Advanced Functional Materials (2022)

Peng Wan Mingming Jiang Longxing Su Sihao Xia Yun Wei

Abstract Low‐dimensional polarization‐sensitive photodetectors have captured ever‐increasing attention due to their unique applications in navigation, optical switching, and communication. However, to date, the study of dimensionality‐dependent polarization‐sensitive photodetectors has not received much attention. Herein, a double‐faced polarization‐sensitive photodetector based on an individual high‐quality Sb 2 Se 3 microbelt is proposed, where both the wide and narrow side facets serve as irradiation targets. Polarization‐sensitive measurements reveal the anisotropy in the photocurrents recorded parallel and perpendicular to the long axis of the Sb 2 Se 3 microbelt. Strikingly, the single Sb 2 Se 3 microbelt photodetector reveals the obvious perpendicular reversal with a 90° angle on polarization sensitivity from the wide surface to the narrow surface. With decreasing inclination angle, the anisotropic ratio varies from 1.18 to 0.87 gradually. Interestingly, the photodetector can lose its polarization sensitivity at a particular inclination angle. Angle‐resolved polarized Raman spectroscopy confirms the asymmetry and anisotropic character of the Sb 2 Se 3 microbelt. The polarization sensitivity of the Sb 2 Se 3 microbelt photodetectors originates from the optical anisotropy induced by the crystal structure anisotropy, rather than one‐dimensional geometry morphological anisotropy. The use of an anisotropic Sb 2 Se 3 microbelt in double‐faced polarization‐sensitive photodetection may contribute to new functionality in innovative optoelectronic applications.

Photodetection

10.1002/adfm.202207688

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Citations (31)

Green synthesis of N-doped carbon quantum dots for the detection of nitrite ion in water sample

IOP Conference Series Earth and Environmental Science (2019)

Jianwei Zhao Qi Song Fei Wu Xiao Guo Tong Xu

Abstract In this work, a green hydrothermal method was used to synthesize nitrogen-doped carbon quantum dots (N-CQDs) from Ecuadorian shrimp shell. X-ray diffraction (XRD) pattern showed that N-CQDs had an amorphous carbon peak. Both Fourier transform infrared (FT-IR) spectra and X-ray photoelectron (XPS) spectra indicated the presence of C, O and N in N-CQDs. The elemental analysis revealed that the weight percentage of C, H and N in N-CQDs are 45.7%, 6.9% and 13.2%, respectively. Transmission electron microscopy (TEM) image demonstrated N-CQDs had an average size of 3 nm and spherical shape. While quinine sulfate with 54% fluorescent quantum yield was used as a reference, the quantum output of N-CQDs was calculated to be 23.7%. Ultraviolet-visible absorption spectra of N-CQDs showed that the maximum absorption wavelength was 275 nm. Photoluminescence (PL) spectra of N-CQDs displayed highest PL intensity at excitation and emission wavelengths of 323 and 407 nm, respectively. The results showed that the synthesized samples were N-CQDs. N-CQDs can be used as a fluorescent probe for nitrite ions in water. However, nitrite ion was not detected in Hu County River water and Xi’an tap water. This may be due to the absence of nitrite ion in the selected water samples.

Quantum yield

Ultraviolet

10.1088/1755-1315/344/1/012068

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Citations (10)

ChemInform Abstract: An Addition of Benzylic sp³ C—H to Electron‐Deficient Olefins.

ChemInform (2013)

Hongying Li Lijuan Xing Tong Xu Peng Wang Ruihua Liu

Abstract A simple protocol is applied in the absence of any catalyst or additive.

10.1002/chin.201323142

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Boosting Visible-Light-Driven Photocatalytic H2 Evolution of C/Znln2s4 Hollow Tubes by Ni Doping

SSRN Electronic Journal (2022)

Guanqiong Li Haiou Liang haiyan Yu Tong Xu Jie Bai

An n-type nickel-doped carbon indium zinc sulfur (Ni/CZIS) hollow tube structure photocatalyst was synthesized for the first time through a simple solvothermal combination with an oil bath. Then it was characterized by a series of tests such as SEM, TEM, XRD, XPS, photoelectric properties and so on. The results showed that the addition of nickel acetate in the oil bath achieved uniform doping of nickel atoms and partially replaced the positions of zinc. The optimized Ni/CZIS material had lower overpotential, broadened the light absorption region, promoted photo-induced carrier separation and better hydrophilicity, thus showing an excellent visible-light photocatalytic hydrogen production rate (3035.75 Î¼mol/g/h) and cyclic stability. In view of density functional theory calculations, Ni atomic doping narrowed the band gap width and changed the positions of the valence and conduction bands, and also generated new hybridization levels near the Fermi level. This energy level provided a new electronic channel for photo-generated electrons, promoted electron transfer and suppressed carrier recombination, thereby enhancing the photocatalytic hydrogen production performance.

Boosting

Visible spectrum

10.2139/ssrn.4064557

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Removal of Cd (II) Ions from Bioretention System by Clay and Soil Wettability

Water (2021)

Tong Xu Jiacheng Yu Dongjian Cai Zhaoyang You Kinjal J. Shah

In this work, a silane modifier with benzyl substitutes (OFS-B) and linear substitutes (OFS-L) was used to modify bentonite clay and soil, and the results were characterized by Fourier transform-infrared absorption spectroscopy (FT-IR) and powder-X-ray diffraction (XRD) analysis. A contact angle analysis was performed to determine the wettability of modified clay and soil. The findings revealed that silane-modified OFS-L clay and soil produced wettable surfaces, while OFS-B exhibited hydrophobic properties. These clays and soils were used in a bioretention system for Cd (II) removal. In the study, seven different types of bioretention systems, including natural, OFS-L, and OFS-B modified clay and soil, as well as natural, OFS-L, and OFS-B modified soil, were applied to Cyperus alternifolius plants without an additional layer. The removal capacity of Cd (II) was measured in the following order: modified clay > modified soil > original clay/soil > no layer, i.e., 99.48%, 92.22%, 88.10/78.5%, and 30.0%, respectively. OFS-L removed more Cd (II) than OFS-B during the modification. OFS-L now improves the bioavailability and accumulation of Cd (II) in the plant (18.5 µg/g) and has a higher chlorophyll-b concentration (1.92 mg/g fresh weight) than other systems. The wettable clay exhibited clay leaching into the various levels of the bioretention system. In the bioretention system, benzyl substituted clay prevented the penetration of water and formed a Cd (II) agglomeration. When compared to non-wettable modifiers, these results indicated that wettable clay material could be a capable material for removing Cd (II).

Bioretention

Bentonite

Wettable powder

10.3390/w13223164

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Citations (4)