Gansu Natural Energy Research Institute

Gansu, China

Gansu Natural Energy Research Institute

Gansu, China

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Du Y.,Gansu Natural Energy Research Institute | Du Y.,Lanzhou University of Technology | Liu B.,Qinghai Institute of Meteorological science | Hou F.,Lanzhou University of Technology | Wang Z.,Lanzhou University of Technology
Communications in Computer and Information Science | Year: 2017

According to the results of the remote sensing satellite data of HJ, TM and MSS in the recently 40 years. The area of grassland desertification was increasing trend around Qinghai lake area from 1975 to 2000, whose rate was 12 km2/a, the area change of grassland desertification was small during 2000 to 2008, which was stable. The area greatly reduced in 2008–2012, reaching to 56.90 km2. This shows that the reduced area of grassland desertification is more obvious in the Qinghai Lake area in the past 10 years. Meanwhile the ecological environment tends to be improved. The main driving force of desertification area decreases is: The water level increased of the Qinghai lake is significant in nearly 10 years; The climate of Qinghai Lake basin shows warm and wet trend. It is particularly prominent after entering the 21st century; the runoff into of the increased lake is also obviously; Human activity is slowing around Lake area. © Springer Nature Singapore Pte Ltd. 2017.


Du Y.-E.,Gansu Natural Energy Research Institute | Hu Y.-P.,Gansu Natural Energy Research Institute | Liu B.-K.,Qinghai Institute of Meteorological science
Environment, Energy and Sustainable Development - Proceedings of the 2013 International Conference on Frontier of Energy and Environment Engineering, ICFEEE 2013 | Year: 2014

This paper is based on astronomical radiation theory and applies the DEM elevation model of terrain feature, by calculating extraterrestrial solar radiation and atmospheric transmittance to have built the global solar radiation estimation model of the month and the annual of Qinghai Plateau, the simulation is better; meanwhile, having applied the model to simulate the average total solar radiation of the month and annual of the past 30 years (1971-2000) of Qinghai Province. The simulation results show that: the global solar radiation of the annual average of Qinghai Province is 6771.95 MJ/m2, and the spatial pattern presents a decreasing trend from the northwest to the southeast; monthly global solar radiation showed obvious seasonal variation and spatial patterns and annual total solar radiation are basically the same. The global solar radiation has begun to increase from January to May, which is up to the highest value 717.24 MJ/m2 in May, It has reduced in June and reached the second highest value 701.96 MJ/m2 in July and continued to decrease from August till December, which is the lowest values 352.63 MJ/m 2. © 2014 Taylor & Francis Group, London.


An X.,Gansu Natural Energy Research Institute | Han L.,Gansu Natural Energy Research Institute | Chen Z.,Gansu Natural Energy Research Institute | Liu G.,Gansu Natural Energy Research Institute | Xi W.,Gansu Natural Energy Research Institute
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2012

The V-N-TiO 2 powders were synthesized with different doped modes by sol-gel method. In the experiment, tetrabutyl titanate was used as titanium source, diehanolamine was used as nitrogen source, and ammonium metavanadate was used as vanadium source. It was characterized through UV-VIS absorption spectrum, X-Ray diffraction spectrum (XRD), SEM. The photocatalytic activity of V-N-TiO 2 was investigated by degradation of phenol. The results showed that V-N-TiO 2 synthesized with the doped mode that both of nitrogen source and vanadium source mixed with titanium source keep high catalytic activity under UV-light and simulated sunlight, with the degradation rate of phenol in UV light up to 98.63% in 100 minutes and the degradation rate of phenol in simulated sunlight up to 91.83% in 300 minutes.


Li Z.,East China University of Science and Technology | Shi X.-J.,East China University of Science and Technology | Ge X.-P.,East China University of Science and Technology | Wei J.-J.,East China University of Science and Technology | And 4 more authors.
Chemical Research in Chinese Universities | Year: 2012

The electron interaction among the noncovalently engineered graphene-methylene blue(MB) nanocomposite with a dipolar pull-push hybrid model was studied. The π-π interaction between reduced graphene oxide(rGO) and MB molecule was studied by 1HNMR spectroscopy. The electrochemical investigation indicates MB has a stronger electron transfer interaction with rGO than with GO. The ability of graphene-MB nanocomposites to undergo photoinduced electron transfer was confirmed from the capability of the nanocomposites coated electrode to generate photocurrent in a photoelectrochemical cell. The role of graphene as electron acceptor in the opto-electronic assembly was discussed.


Liu B.,Lanzhou University | Hou F.,Lanzhou University | Du Y.,Gansu Natural Energy Research Institute
2011 International Conference on Multimedia Technology, ICMT 2011 | Year: 2011

As a big province which owns many grasslands, the potential carbon sequestration of Qinghai province is very great. The strong (A2a) and weak (B2a) scenarios in global climate warming and drying scenarios, the climate in Qinghai Province is opposite to the climate of the global trends, taking on warm trend; The main subject of Qinghai grassland carbon is the alpine tundra categories, accounting for Qinghai Province the total area of potential grassland is 75.69%, the annual carbon potential is 87.22% of the potential carbon potential of grassland of Qinghai province. compared with nearly 50 years (1950-2000) ,the grassland area will show a decrease trend in Qinghai Province, the trend of increasing forest area, grassland area will be reduced respectively by 30.71% and 28.5%;In the future (2001-2050) A2a, B2a scenario in Qinghai Province on carbon sequestration potential of grassland decreased by 25.55% and 20.82%, The warm and humid trend of climate is conducive to increase total vegetation carbon sink, the subject is that the carbon sequestration of alpine tundra categories has a significant reduction, but temperate forests (it is cold temperate coniferous forest class in Qinghai province ) is characterized by increased carbon sink . © 2011 IEEE.


An X.,Gansu Natural Energy Research Institute | Liu G.,Gansu Natural Energy Research Institute | Han L.,Gansu Natural Energy Research Institute | Chen Z.,Gansu Natural Energy Research Institute
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | Year: 2014

V-N co-doped TiO2/attapulgite photocatalytic composite materials were synthesized by slo-gel method, preparation method, V-N-TiO2 and attapulgite of mass ratio, calcination temperature and time of V-N-TiO2/attapulgite on photocatalytic properties were studied. On the condition of simulative sunlight, photocatalytic properties of V-N-TiO2/attapulgite were measured by using methylene blue as evaluation standards. Research shows that when mass ratio of TiO2 to attapulgite is 1:3, calcination temperature is 300°C and calcination time is 2 h, the best performance properties of V-N-TiO2/attapulgite photocatalytic composite materials to methylene blue is obtained.


Chen Z.,Gansu Natural Energy Research Institute | An X.,Gansu Natural Energy Research Institute | Liu G.,Gansu Natural Energy Research Institute | Han L.,Gansu Natural Energy Research Institute
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2015

The optical properties of potassium ferric oxalate were tested by its chemical actinometer exposure experiment, the reactor had good optical performance, the photon collection efficiency factor Φef was 0.75. Using phenol as the target pollutants, the apparent quantum yield was used to characterize the efficiency of photocatalytic reaction, the apparent quantum yield of P25 and self-made V-N-TiO2 were 0.0091 and 0.0079, respectively, possessing good efficiency of photocatalytic reaction. Weather running experiment was carried out to realize three photocatalytic reaction forms, including suspended, fluidized bed and fixed bed, degrading 20 mg/L phenol completely, daily processing capacity could reach 0.96 tons. ©, 2015, Science Press. All right reserved.


An X.,Gansu Natural Energy Research Institute | Han L.,Gansu Natural Energy Research Institute | Chen Z.,Gansu Natural Energy Research Institute | Xi W.,Gansu Natural Energy Research Institute
Shiyou Huagong/Petrochemical Technology | Year: 2011

Nitrogen doped TiO2 powder was prepared by sol-gel method with diethanolamine as the nitrogen source, acetic acid as the inhibitor and absolute ethyl alcohol as the solvent. The influences of water dosage, acetic acid dosage, absolute ethyl alcohol dosage and diethanolamine dosage, aging temperature, calcination temperature and calcination time on the photocatalytic activity of the nitrogen doped TiO2 in phenol degradation under xenon lamp were investigated. The preparation conditions were optimized by using orthogonal design. The results showed that the effect of the calcination temperature on the photocatalytic activity of the nitrogen doped TiO2 was significant. The optimum conditions for the nitrogen doped TiO2 preparation were as follows: mole ratio of tetrabutyl titanate(TBT):water:acetic acid:absolute ethyl alcohol:diethanolamine 1:462:17.3:3:0.4, TBT 0.015 mol, aging temperature 45°C, calcination temperature 400°C and calcination time 4 h. The phenol degradation ratio over the above nitrogen doped TiO2 could reach 75.13% under the xenon lamp for 3 h, which was 70% higher than that over TiO2.


Shao K.,Northwest Normal University | Li J.,Northwest Normal University | An X.,Gansu Natural Energy Research Institute | Lei Z.,Northwest Normal University | Su B.,Northwest Normal University
Gaodeng Xuexiao Huaxue Xuebao/Chemical Journal of Chinese Universities | Year: 2014

Ag+/Ag/ZnO porous nano-structured fiber materials were prepared by the template-assisted two-steps method and characterized by thermogravimetric analysis(TG), X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), scanning electron microscopy(SEM) and UV-Vis spectroscopy(UV-Vis) techniques. The effect of modified silver amount(molar fraction, 0-1.5%) on the photocatalytic property of ZnO materials was studied by the degradation of methylene blue(MB) as the model reaction. The results show that the Ag+-Ag co-modified ZnO porous nano-structured fiber materials are successfully prepared via the template-assisted two-steps method and the Ag+-Ag co-modifification affects the photocatalytic performance of ZnO materials by affecting its cell structure and light adsorption property and morphology. Under the irradiation of visible light, the Ag+/Ag/ZnO porous nano-structured fiber materials showed better catalytic performance than pure ZnO and the catalytic perfrmace of Ag+/Ag/ZnO is related to the modified amount of Ag+-Ag. In this paper, the way of Ag+ and Ag for improving photocatalytic performance of the ZnO materials was discussed. And the obtained results are helpful to understand the photocatalytic phenomena and mechanisms on the multi-structured material.


Li Z.,East China University of Science and Technology | Zhang H.,East China University of Science and Technology | Ge X.,East China University of Science and Technology | Liang Y.,East China University of Science and Technology | And 5 more authors.
New Journal of Chemistry | Year: 2013

Reduced graphene oxide is modified with sulfanilic acid diazonium salt followed by copper(ii) chelating to form a Cu complex nanocomposite. Characterization by Raman spectroscopy, FTIR and EDS, XPS, cyclic voltammetry demonstrates the successful functionalization of the graphene surfaces. Electrodes that are prepared by drop-casting the suspended nanocomposite solution on interdigitated electrodes (IDE) are tested for a novel pulsed amperometric detection of a series of sulfurated organophosphorus (SOP) pesticides, parathion, fenitrothion and malathion. A linear relationship of the pulsed amperometric current to the logarithmic value of concentration of the three SOPs is demonstrated with a R2 value of ∼0.95 at the S-OP concentration range of 1 ppb to 104 ppb. Negligible amperometric currents are observed in the control experiments using diethyl ethylphosphonate (DEEP) and dimethyl methyl phosphonate (DMMP), or S2-, SO 3 2-, SO4 2- ions, suggesting sensing specificity to sulfurated compounds. © 2013 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

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