Baotou, China
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Ning X.-L.,Baotou Normal College | Yu J.-S.,Inner Mongolia University of Science and Technology
Applied Mechanics and Materials | Year: 2013

The significance of Ecological City construction was summarized. On the basis of summary of the domestic and overseas current situation and development trend of Ecological City construction, the ideas of the construction of the Ecological City in Baotou city were put forward: Making evaluation system and methods by using the ecological system principle; the public participation; establishing the policy system and legal system of Ecological City; outstanding individual characteristics of the city. © (2013) Trans Tech Publications, Switzerland.


Li Y.,Liaoning University | Li S.,Liaoning University | Guo Y.,Liaoning University | Guo Y.,Baotou Normal College | Wang J.,Liaoning University
International Journal of Hydrogen Energy | Year: 2014

NaTaO3 nanoparticles were synthesized by hydrothermal method and then the corresponding visible-light photocatalyst (Er3+:YAlO3/Pt-NaTaO3) was successfully prepared by mixing with Er3+:YAlO3 as up-conversion luminescence agent and supporting Pt as co-catalyst. The prepared Er3+:YAlO3/Pt-NaTaO3 was characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). By studying some influence factors such as Er3+:YAlO3 and Pt-NaTaO3 mass ratio, heat-treated temperature, visible-light irradiation time and solution acidity (pH) on the visible-light photocatalytic hydrogen production caused by Er3+:YAlO3/Pt-NaTaO3, it was found that the prepared Er3+:YAlO3/Pt-NaTaO3 with 0.3:1.0 mass ratio heat-treated at 500 °C for 120 min in weak acidic solution (pH = 5.0-6.0) with 5.0 wt% methanol displayed a high photocatalytic activity in hydrogen production from water solution. © 2014 Hydrogen Energy Publications, LLC.


Li Y.,Liaoning University | Guo Y.,Liaoning University | Guo Y.,Baotou Normal College | Li S.,Liaoning University | Wang J.,Liaoning University
International Journal of Hydrogen Energy | Year: 2015

In this work, a novel up-conversion luminescence agent (Er3+:Y3Al5O12) was synthesized by sol-gel method and then for visible-light photocatalytic hydrogen evolution a corresponding visible-light photocatalyst, platinum supported titanium dioxide nanocomposites coating up-conversion luminescence agent (Er3+:Y3Al5O12/Pt-TiO2 nanocomposite particles), was successfully prepared by sol-gel and calcination methods. Er3+:Y3Al5O12, Pt-TiO2 and Er3+:Y3Al5O12/Pt-TiO2 were all characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM) and energy dispersive X-ray spectroscopy (EDX). The visible-light photocatalytic activity of Er3+:Y3Al5O12/Pt-TiO2 nanocomposites was examined through photocatalytic hydrogen evolution from methanol splitting under visible-light irradiation. The influence factors such as Er3+:Y3Al5O12 and Pt-TiO2 mole ratio, heat-treated temperature and heat-treated time on the visible-light photocatalytic hydrogen evolution activity of Er3+:Y3Al5O12/Pt-TiO2 nanocomposites were also studied. Particularly, Er3+:Y3Al5O12/Pt -TiO2 nanocomposites with 1.5:1.0 M ratio heat-treated at 500 °C for 60 min showed the highest visible-light photocatalytic activity in hydrogen evolution from methanol splitting. Copyright © 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.


Guo Y.,Liaoning University | Cheng C.,Baotou Normal College | Wang J.,Liaoning University | Wang Z.,Liaoning University | And 4 more authors.
Journal of Hazardous Materials | Year: 2011

In the present work, the rutile, anatase and mixed (rutile and anatase) crystal phase TiO2 powders were irradiated by ultrasound and solar light, respectively, and the generation of reactive oxygen species (ROS) were detected through the oxidation reaction from 1,5-diphenyl carbazide (DPCI) to 1,5-diphenyl carbazone (DPCO). The DPCO can be extracted by the mixed solvent of benzene and carbon tetrachloride and the extract liquors display an obvious absorption peak around 563nm. In addition, the influences of (ultrasonic or solar light) irradiation time, TiO2 addition amount and DPCI concentration on the quantities of generated ROS were also reviewed. The kinds of generated ROS were determined by using several radical scavengers. At last, the researches on the sonocatalytic and photocatalytic degradation of several organic dyes were also performed. It is wished that this paper might offer some important subjects for broadening the applications of sonocatalytic and photocatalytic technologies. © 2011 Elsevier B.V.


Li S.,Liaoning University | Guo Y.,Liaoning University | Guo Y.,Baotou Normal College | Zhang L.,Liaoning University | And 3 more authors.
Journal of Power Sources | Year: 2014

In this paper, a high effective up-conversion luminescence agent (Er 3+:Y3Al5O12) is synthesized by sol-gel method, and then its corresponding visible-light photocatalyst (Er 3+:Y3Al5O12/Pt-TiO2) is successfully prepared by direct mixing and calcination methods. For comparison, Er3+:Y3Al5O12, Pt-TiO2 and Er3+:Y3Al5O12/Pt-TiO2 are all characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). At first, the up-conversion luminescence properties of Er3+:Y3Al 5O12 are reviewed by excitation spectrum in visible-light region and emission spectrum in ultraviolet-light region. And then, under visible-light irradiation the visible-light photocatalytic activity of Er 3+:Y3Al5O12/Pt-TiO2 is examined through photocatalytic hydrogen production from aqueous methanol solution. Lastly, the influence factors such as Er3+:Y 3Al5O12 and Pt-TiO2 mole ratio, heat-treated temperature and heat-treated time on the visible-light photocatalytic hydrogen production activity of Er3+:Y 3Al5O12/Pt-TiO2 are studied. Particularly, Er3+:Y3Al5O12/Pt- TiO2 with 6:100 M ratio heat-treated at 550 C for 90 min shows the highest photocatalytic activity in hydrogen production from aqueous methanol solution. © 2013 Elsevier B.V. All rights reserved.


Zhang R.-P.,Liaoning University | Yu X.-J.,CAS Beijing Institute of Applied Physics And Computational Mathematics | Zhao G.-Z.,Baotou Normal College
Chinese Physics B | Year: 2013

In this paper, we present the local discontinuous Galerkin method for solving Burgers' equation and the modified Burgers' equation. We describe the algorithm formulation and practical implementation of the local discontinuous Galerkin method in detail. The method is applied to the solution of the one-dimensional viscous Burgers' equation and two forms of the modified Burgers' equation. The numerical results indicate that the method is very accurate and efficient. © 2013 Chinese Physical Society and IOP Publishing Ltd.


Guo Y.,Liaoning University | Guo Y.,Baotou Normal College | Li Y.,Liaoning University | Li S.,Liaoning University | And 2 more authors.
Energy | Year: 2015

In this paper, a high effective up-conversion luminescence agent (Er3+:Y3Al5O12) is synthesized by sol-gel method, and then its corresponding visible-light photocatalysts (Er3+:Y3Al5O12/Pt-KNbO3) are successfully prepared by hydrothermal and direct mixing methods. For comparison, Er3+:Y3Al5O12, Pt-KNbO3 and Er3+:Y3Al5O12/Pt-KNbO3 are all characterized by XRD (X-ray diffractometer), SEM(scanning electron microscopy) and EDX(energy dispersive X-ray spectroscopy). At first, the visible-light photocatalytic activity of Er3+:Y3Al5O12/Pt-KNbO3 is examined through photocatalytic hydrogen evolution from aqueous methanol solution under visible-light irradiation. Lastly, the influence factors such as Er3+:Y3Al5O12 and Pt-KNbO3 mass ratio, heat-treated temperature and initial pH value on the visible-light photocatalytic hydrogen evolution activity of Er3+:Y3Al5O12/Pt-KNbO3 are studied. Particularly, Er3+:Y3Al5O12/Pt-KNbO3 catalysts with 0.5:1.0 mass ratio heat-treated at 500°C in aqueous methanol solution with initial pH=6.0 show the highest photocatalytic activity in hydrogen evolution from aqueous methanol solution. © 2015 Elsevier Ltd.


Gao J.,Liaoning University | Guo Y.,Liaoning University | Wang J.,Liaoning University | Wang Z.,Liaoning University | And 4 more authors.
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2011

In this work, three o-Vanillin Schiff Bases (o-VSB: o-Vanillin-d- Phenylalanine (o-VDP), o-Vanillin-l-Tyrosine (o-VLT) and o-Vanillin-l-Levodopa (o-VLL)) with alanine constituent were synthesized by direct reflux method in ethanol solution, and then were used to study the interaction to bovine serum albumin (BSA) molecules by fluorescence spectroscopy. Based on the fluorescence quenching calculation, the bimolecular quenching constant (Kq), apparent quenching constant (Ksv), effective binding constant (K A) and corresponding dissociation constant (KD) as well as binding site number (n) were obtained. In addition, the binding distance (r) was also calculated according to Fosters non-radioactive energy transfer theory. The results show that these three o-VSB can efficiently bind to BSA molecules, but the binding array order is o-VDP-BSA > o-VLT-BSA > o-VLL-BSA. Synchronous fluorescence spectroscopy indicates that the o-VDP is more accessibility to tryptophan (Trp) residues of BSA molecules than to tyrosine (Tyr) residues. Nevertheless, the o-VLT and o-VLL are more accessibility to Tyr residues than to Trp residues. © 2010 Elsevier B.V. All rights reserved.


Ding Y.-P.,Baotou Normal College | Guo Y.-W.,Baotou Normal College
Chinese Rare Earths | Year: 2015

ZnFe2O4, ZnFe2O4/TiO2-La2O3, TiO2-La2O3 and ZnFe2O4/TiO2 composites were synthesized by the copre-cipitation and the ultrasonic dispersion method. Meanwhile, ZnFe2O4/TiO2-La2O3, ZnFe2O4/TiO2 and TiO2 were characterized by scanning electron microscope (SEM), their photocatalytic activities were evaluated through the degradation of bromocresol green(BG) under solar light irradiation, and photocatalytic performance of ZnFe2O4/TiO2-La2O3, ZnFe2O4/TiO2, TiO2-La2O3 and single TiO2 are compared. Effects of amount of photocatalyst, calcination temperature, calcination time and initial concentration on degradation rate of BG were investigated. The results show that ZnFe2O4/TiO2-La2O3 showed higher photocatalytic activity at 500℃ for 60 min. The photo-degradation efficiency of bromocresol green were 87.53%, 62.67%, 56.13% and 39.42%, respectively, when the concentration of photocatalysts and BG were 1.0 g·L-1 and 10 g·L-1 reacting for 150 min. ©, 5015, Editorial Office of Chinese Rare Earths. All right reserved.


In this work, YAlO3/SnO2-TiO2 composites were prepared by the ultrasonic dispersion and liquid boiling method. In succession, they were then characterized by scanning electron microscopy (SEM). Acid red B as a model dye compound was degraded under visible light irradiation to evaluate the photocatalytic activities of the YAlO3/SnO2-TiO2 composites. It found that the photocatalytic activity of SnO2-TiO2 composite can be enhanced by adding an appropriate amount of YAlO3. Effects of heat-treated temperature and heat-treated time on the photocatalytic activity of the YAlO3/SnO2-TiO2 composites were investigated. In addition, the effects of visible light irradiation time and YAlO3/SnO2-TiO2 amount on the photocatalytic degradation of acid red B dye in aqueous solution were investigated in detail.

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