XG

Xiaohui Guan

Northeast Electric Power University

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Guang‐Sheng Wang

Beihang University

Min Lü

Jilin University

Xin Guan

Changchun University of Science and Technology

Yang Liu

Harbin University of Commerce

Lanhe Zhang

Northeast Electric Power University

Enze Zhu

Northeast Electric Power University

Penggang Yin

Beihang University

Jiqing Zhang

Northeast Electric Power University

Chun‐Guang Liu

Beihua University

Qing Wang

Northeast Electric Power University

Cooperative Institutions

Harbin Electric Corporation (China)

Environmental Protection Engineering (Greece)

Northeast Electric Power University

Chinese Academy of Sciences

Zhejiang University

Jilin University

Shandong University

Shanghai Jiao Tong University

Electric Power University

University of Chinese Academy of Sciences

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Thoughts on Ideological and Political Education in Professional Courses of IOT from the Perspective of Students

Proceedings of the 2022 International Conference on Science Education and Art Appreciation (SEAA 2022) (2022)

Yuqi An Xiaohui Guan

Ideological and political education of curriculum is an important mean to implement moral education.This paper first analyses the characteristics of college students.Then it presents the understanding, feelings and gains of the educates in ideological and political education of professional courses inside and outside classroom teaching.The consciousness of career development planning and the responsibility for the fate of the country can be established.

Political Education

10.2991/978-2-494069-05-3_185

Cite

Citations (0)

Electron Distribution Regulation of Nanoparticle Assembled Hollow Structured Fe₃O₄@ZnFe₂O₄@NC/Mo₂TiC₂T_x for High‐Performance Aqueous Zinc‐Ion Batteries

Advanced Functional Materials (2025)

Xiaohui Guan Jiqing Zhang Enze Zhu Ruotong Li Liu Yang

Abstract Exploring advanced high‐performance electrode materials for aqueous zinc‐ion batteries (AZIBs) is of enormous significance for the development and commercial application of AZIBs. Herein, nanoparticle assemble hollow structured Fe 3 O 4 @ZnFe 2 O 4 @NC/Mo 2 TiC 2 T x with excellent specific capacity and cycling performance is fabricated via a designed method, and an advanced strategy is First proposed to modulate charge storage performance. The superior specific capacity can be attributed to the enhanced electrochemical activity and reversibility, which are mainly achieved by in situ Zn adulteration to trigger the electron redistribution between Fe, Zn, and O atoms. Additionally, the unique structure and multiple components can provide plentiful active sites, ameliorating the affinity between electrode and electrolyte and facilitating electrochemical kinetics. The great cycling performance can be ascribed to the improved structural stability by loading two robust substrates of intimately coated carbon and MXene. Fe 3 O 4 @ZnFe 2 O 4 @NC/Mo 2 TiC 2 T x renders a distinctly higher specific capacity (364.4 mAh·g −1 ) than that of Fe 2 O 3 (92.2 mAh·g −1 ), Fe 3 O 4 @NC (211.2 mAh·g −1 ), and Fe 3 O 4 @ZnFe 2 O 4 @NC (276.8 mAh·g −1 ), as well as excellent cycling stability of 86.2% capacity retention over 1000 cycles. Moreover, the charge storage mechanism of the new electrode and the effects of structure and composition regulation are revealed by characterizations and computations.

10.1002/adfm.202418960

Cite

Citations (0)

Electrochemical Performances Investigation of New Carbon-Coated Nickel Sulfides as Electrode Material for Supercapacitors

Materials (2019)

Xinyu Lei Mu Li Min Lü Xiaohui Guan

A new carbon-coated nickel sulfides electrode material (NST/CNTs@C) has been synthesized through an easy-to-operate process: NiS2/CNTs which was prepared by a hydrothermal method reacted with BTC (1,3,5-benzenetricarboxylic acid) under the condition of water bath heating to obtain the precursor, and then the precursor was calcined in 450 °C under a nitrogen atmosphere to obtain NST/CNTs@C. The electrochemical performance of NST/CNTs@C has been greatly improved because the formation of a carbon-coated layer effectively increased the specific surface area, reduced the charge transport resistance and inhibited the morphological change of nickel sulfides in the charge-discharge process. Compared with pure NiS2 and NiS2/CNTs, NST/CNTs@C presented great specific capacitance (620 F·g-1 at a current density of 1 A·g-1), better cycle stability (49.19% capacitance retention after 1000 cycles) and more superior rate capability (when the current density was raised to 10 A·g-1 the specific capacitance remained 275 F·g-1).

Carbon fibers

10.3390/ma12213509

Cite

Citations (7)

[Study on separation of bacteria on the surface of mature manganese sand and the ability of oxidating Fe2+ and Mn2+].

Environmental Sciences (2011)

Xiaohui Guan Yuling Zhou Zi-Chuang Wang Min Lu

Seven strains of bacteria which were separated from the active membrane on the mature manganese sand which are from different power plants. After identifying they are Leptothrix, Sphaerotilus and Siderocapsa. Studies show that the three strains of bacteria have a better removal of Fe2+, in which Siderocapsa No. 1 is the best. Leptothrix and Siderocapsa have a good removal of Mn2+ Siderocapsa No. 1 has the highest removal rate for Mn2+, Siderocapsa No. 2 is secondary. The mixture of separately cultured Leptothrix, Sphaerotilus, Siderocapsa No. 1 and Siderocapsa No. 2 which can remove iron and manganese were inoculated on the surface of manganese sand filter. Biofilm culturing with groundwater concentrations iron and manganese. The biological filter column has tended to maturate after 20d cultured. Test result indicates that the mature biological filter column can get rid of Fe2+ and Mn2+ nearly 100% and the biological filter column can run stably.

Cite

Citations (0)

A New Method to Evaluate the Slagging Behavior of Coal Ash

Journal of Chinese Society of Power Engineering (2012)

To solve the problem that the prediction accuracy of coal ash slagging behavior is generally low by single index,a model has been built up for the prediction purpose based on partial least squares(PLS) method and cross-validation theory,which includes four input variables,such as the softening temperature,base-acid ratio,percentage of silicon content and silica-alumina ratio,and one output variable,i.e.the slagging rate.A new concept of isotropic and anisotropic index is proposed,according to which the influence of each index on the slagging behavior is qualitatively analyzed,and subsequently an evaluation criterion is obtained combined with relevant fitting equations.Measurement results show that the proposed PLS model is much more accurate in prediction than that of single index,proving the model to be reasonable and feasible.

Cite

Citations (0)

Transformation of Mn2+ and its Effect on the Sludge Properties in A2o Process

SSRN Electronic Journal (2022)

Xiaohui Xu Wenyue Li Mingyue Sun Zhong Sun Xiaohui Guan

During biological wastewater treatment, manganese ion (Mn2+) affects the pollutants removal rate. In this paper, we investigated the distribution and transformation of Mn2+ in the sludge of an anaerobic/anoxic/oxic (A2O), which included sludge supernatant, extracellular polymeric substances (EPS) and sediment (Pellet). The existing morphology and structural characteristics of Mn2+ were analyzed using X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The results showed that low concentration of Mn2+ (<5 mg/L) resulted in an obvious increase in the COD removal rate. Under the treatment of 5 mg/L Mn2+ concentration, COD removal ratio attained as high as 96%. In the sludge, the distribution pattern of Mn2+ concentration was tightly bound EPS (TB-EPS)>supernatant> loosely bound EPS (LB-EPS)>soluble microbial products (SMP). But Mn2+ was mainly distributed in the Pellet. Manganese in Pellet mainly appeared as residual fraction and reducible fraction. In addition, when Mn2+ treatment from 0 mg/L to 20 mg/L, the specific surface area of Pellet in each react zone of A2O reactor grew to 11.560, 11.265 and 10.098 m2/g, respectively. The average pore size in each zone decreased to 7.391, 7.772 and 8.276 nm, respectively. Mn2+ existed mainly in amorphous phase in the Pellet. The functional groups of the Pellet did not change with the addition of Mn2+ . In the Pellet, the valence state of Mn changed from +2 valence to +3 and +4 valence.

Pellet

Extracellular polymeric substance

10.2139/ssrn.4085534

Cite

Citations (0)

Multi-Heteroatom-Doped Carbon Materials for Solid-State Hybrid Supercapacitors with a Superhigh Cycling Performance

Energy & Fuels (2020)

Yang Liu Yang Yang Shihao Wang Xiaohui Guan Xin Guan

For the purpose of assembling high-performance solid-state hybrid supercapacitors (HSCs) with superior cycling stability and energy density, biomass-derived multi-heteroatom-doped carbon materials were prepared in this work and utilized as negative electrodes for the supercapacitors. The applied biomass in this study included orange peel and egg white; besides, we also prepared Ag-doped egg white as a precursor through a denaturation reaction to synthesize a Ag-nanoparticle-decorated carbon material; the consequently obtained carbon materials were referred to as OC, EC, and Ag–EC, respectively. The as-synthesized heteroatom-doped carbon materials displayed excellent electrochemical performance. The specific capacitance retentions were 101.7, 105.4, and 107.4% for OC, EC, and Ag–EC, respectively, after 50 000 cycles. In addition, a core–shell structured C/N–CoO@CoO/NiO nanomaterial was also synthesized and used as the positive electrode, which exhibited a high cycling stability of 111.6% after cycling for 50 000 times. The three corresponding solid-state hybrid supercapacitors (HSCs) possessed excellent energy densities of 33.1, 30.1, and 35.6 Wh kg–1 at about 850.0 W kg–1, respectively. After cycling for 50 000 times, their specific capacitance retentions were 145.9, 139.2, and 140.0%, respectively.

Heteroatom

Carbon fibers

10.1021/acs.energyfuels.9b04505

Cite

Citations (54)

Preoperative prediction of invasive behavior of pancreatic solid pseudopapillary neoplasm by MRI-based multiparametric radiomics models

Abdominal Radiology (2022)

Xiuqun Liang Wenguang He Chencui Huang Feng Zhan Xiaohui Guan

10.1007/s00261-022-03639-6

Cite

Citations (2)

Three-Dimensional Structure of a Huadian Oil Shale Kerogen Model: An Experimental and Theoretical Study

Energy & Fuels (2015)

Xiaohui Guan Yao Liu Di Wang Qing Wang Mingshu Chi

The molecular structural information on a kerogen isolated from Huadian oil shale was obtained using solid-state 13C nuclear magnetic resonance (NMR), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR), and X-ray diffraction (XRD) techniques. Then, a series of Huadian kerogen isomers were constructed on the basis of these structural data. The possible carbon skeleton isomer and the substituted position effects of the aromatic ring, aliphatic ether bond, carboxylic acid, and carboxylic acid derivative as well as the quantity of tertiary and quaternary carbons on Huadian kerogen model stability have been systematically studied on the basis of density functional theory (DFT) calculations. For the carbon skeleton isomer, the calculated total energy decreases with the increasing number of the closed annular space (grid), which is constituted by connecting the aliphatic chain to the aromatic cluster or other aliphatic chain. DFT calculations show an about 16.8 kcal mol–1 decrease in total energy for every grid increase when the number of grids increases from 2 to 11. A significant break in the decrease of the total energy has been obtained for an isomer with 11 grids, which means that a proper number of grids (11 grids is appropriate in this paper) in carbon skeleton should be considered for building the chemical structure of Huadian kerogen. For the substituted position effects, aliphatic ether bonding to quaternary carbon, carboxylic acid attaching to secondary carbon, and carboxylic acid derivative bonding to quaternary carbon seem to give a lower energy structure than other connections. Besides, a high quantity of tertiary and quaternary carbons is conducive to a stable model for Huadian kerogen. The aromatic cluster dispersed distribution also makes a contribution to improve the stability of the model. According to these results, we proposed a relatively stable Huadian kerogen three-dimensional (3D) model. Moreover, this 3D model was testified reasonablely through the match between calculated and experimental 13C NMR spectra.

Chemical shift

Carbon fibers

10.1021/ef502759q

Cite

Citations (95)

Preparation of Quasi-MIL-101(Cr) Loaded Ceria Catalysts for the Selective Catalytic Reduction of NOx at Low Temperature

Catalysts (2020)

Min Lu Haili Hou Chuanying Wei Xiaohui Guan Wei Wei

At present, the development of novel catalysts with high activity Selective Catalytic Reduction (SCR) reaction at the low temperature is still a challenge. In this work, the authors prepare CeO2/quasi-MIL-101 catalysts with various amounts of deposited ceria by a double-solvent method, which are characterized by X-ray diffraction (XRD), Fourier Transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and so on. The results show that the increase of Ce content has a great influence on the catalytic property of the catalyst. The introduction of Ce can promote the conversion between Cr3+ and Cr5+ and increase the proportion of lattice oxygen, which improves the activity of the catalyst. However, the catalyst will be peroxidized when the content of Ce is too high, resulting in the decline of the catalytic activity. This experiment indicates that CeO2/quasi-MIL-101 plays a significant role in the NH3-SCR process at the low temperature when the loading of Ce is 0.5%. This work has proved the potential of this kind of material in NH3-SCR process at the low temperature, providing help for subsequent studies.

Selective catalytic reduction

10.3390/catal10010140

Cite

Citations (22)