Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893740
Chunxia Hu, Yang Shi, X. Zhao, Guanjun Liu
In this paper, a -100°C three-stage auto-cascade refrigeration system is proposed and the experimental device is established. In order to determine the impact of R50 on the refrigeration cycle, the experiments are made by using mixed-refrigerants with R134a/R23/R14 and R134a/R23/R14/R50 containing the same quantity of R134a, R23 and R14 respectively in the same device. By analyzing and comparing the different effects of the two experiments, it is found that when R50 is added into the mixed-refrigerants, the evaporation temperature and the temperature after condensation at the second-stage and the third-stage partial condensers are lower, but the high pressure is increased. The higher the hige pressure is, the more power consumption is needed and more time is required to achieve the designed temperature. So it is harmful to the cycle performance of the three-stage auto-cascade refrigeration system when R50 is added into the mixed-refrigerants.
{"title":"The impact of R50 on −100°C three-stage auto-cascade refrigeration system","authors":"Chunxia Hu, Yang Shi, X. Zhao, Guanjun Liu","doi":"10.1109/ICMREE.2013.6893740","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893740","url":null,"abstract":"In this paper, a -100°C three-stage auto-cascade refrigeration system is proposed and the experimental device is established. In order to determine the impact of R50 on the refrigeration cycle, the experiments are made by using mixed-refrigerants with R134a/R23/R14 and R134a/R23/R14/R50 containing the same quantity of R134a, R23 and R14 respectively in the same device. By analyzing and comparing the different effects of the two experiments, it is found that when R50 is added into the mixed-refrigerants, the evaporation temperature and the temperature after condensation at the second-stage and the third-stage partial condensers are lower, but the high pressure is increased. The higher the hige pressure is, the more power consumption is needed and more time is required to achieve the designed temperature. So it is harmful to the cycle performance of the three-stage auto-cascade refrigeration system when R50 is added into the mixed-refrigerants.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"79 1","pages":"581-584"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77363382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893772
Jian Wang, Shouyu Zhang, A. Dong, Xi Guo, Chuan Chen, Shaowu Xiong
An experimental study on the co-pyrolysis of biomass and Pingshuo coal was performed using temperature programmed thermogravimetric analysis method under atmospheric pressure with nitrogen as balance gas. Pingshuo coal, sawdust and rice straw were chosen for the experiment. The final pyrolysis temperature was designed as 1000°C and the heating rate was chosen as 10°C/min, and the mixture ratio of the biomass and the coal was varied from 0 to 100wt.%. The experimental results indicate that there exist synergetic effects between the biomass and Pingshuo coal during their co-pyrolysis process. When the mixture ratio of the biomass(sawdust and rice straw) is below 50%, the appearance of the biomass promotes Pingshuo coal pyrolysis. It is found that the initial temperature of volatile emission from Pingshuo coal and the temperature corresponding to the maximum pyrolysis conversion rate during the mixture pyrolysis are lower than the temperature of Pingshuo coal pyrolysis. Moreover, compared with the co-pyrolysis of sawdust and Pingshuo coal, the synergetic effects between rice straw and Pingshuo coal are much more obvious. However, when the mixture ratio of the biomass(sawdust and rice straw) is above 50%, the synergetic effects disappear, even the appearance of the biomass restrains Pingshuo coal pyrolysis. In addition, on the co-pyrolysis curves, the temperature range of the biomass(sawdust and rice straw) pyrolysis shifts to high temperature range, however, the temperature range of Pingshuo coal pyrolysis shifts to low temperature range. Thus, it can be deduced that there exist synergetic effects between the biomass and Pingshuo coal during co-pyrolysis.
{"title":"Co-pyrolysis of biomass and pingshuo coal","authors":"Jian Wang, Shouyu Zhang, A. Dong, Xi Guo, Chuan Chen, Shaowu Xiong","doi":"10.1109/ICMREE.2013.6893772","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893772","url":null,"abstract":"An experimental study on the co-pyrolysis of biomass and Pingshuo coal was performed using temperature programmed thermogravimetric analysis method under atmospheric pressure with nitrogen as balance gas. Pingshuo coal, sawdust and rice straw were chosen for the experiment. The final pyrolysis temperature was designed as 1000°C and the heating rate was chosen as 10°C/min, and the mixture ratio of the biomass and the coal was varied from 0 to 100wt.%. The experimental results indicate that there exist synergetic effects between the biomass and Pingshuo coal during their co-pyrolysis process. When the mixture ratio of the biomass(sawdust and rice straw) is below 50%, the appearance of the biomass promotes Pingshuo coal pyrolysis. It is found that the initial temperature of volatile emission from Pingshuo coal and the temperature corresponding to the maximum pyrolysis conversion rate during the mixture pyrolysis are lower than the temperature of Pingshuo coal pyrolysis. Moreover, compared with the co-pyrolysis of sawdust and Pingshuo coal, the synergetic effects between rice straw and Pingshuo coal are much more obvious. However, when the mixture ratio of the biomass(sawdust and rice straw) is above 50%, the synergetic effects disappear, even the appearance of the biomass restrains Pingshuo coal pyrolysis. In addition, on the co-pyrolysis curves, the temperature range of the biomass(sawdust and rice straw) pyrolysis shifts to high temperature range, however, the temperature range of Pingshuo coal pyrolysis shifts to low temperature range. Thus, it can be deduced that there exist synergetic effects between the biomass and Pingshuo coal during co-pyrolysis.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"43 1","pages":"694-697"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79920062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893758
Yi Zhang, Dezhen Chen, L. Zou, Yan-Meng Bi, Jiacai Xie
To recycle viscous crude oil wastewater through evaporation to supply feeding water for steam injection boiler is a promising technology to benefit viscous crude oil extraction. In order to improve quality of distilled water and avoid scale formation during the evaporation process, the technology of non-thermal plasma (NTP) was tried in this research to pre-treat viscous crude oil wastewater before evaporation. Firstly the wastewater was sprayed into NTP reactor tube and then sent to the evaporator. It was found that after pretreatment, the contents of SiO2 and hardness of pretreated wastewater were reduced. Accordingly, distilled water from evaporating the pretreated wastewater was corresponded to lower hardness and decreased conductivity. The SiO2 contents in distilled water were changed without obvious rules. However as comparing the quality of distilled water from the pretreated wastewater with that from common evaporation facilities, it can be found that the quality of distilled water from NTP treated samples was better except that its hardness is higher which was caused by foam carrying for foam remover was not available in the experimental evaporation system. Low-temperature plasma, as a pretreatment technology, also hindered hard scale formation on the heating surface of evaporator and it is possible to replace scale formation chemicals in operation, providing an economical and energy-saving way for recovering wastewater water.
{"title":"Influence of non-thermal plasma pretreatment on viscous crude oil wastewater evaporation process and on quality of the distilled water","authors":"Yi Zhang, Dezhen Chen, L. Zou, Yan-Meng Bi, Jiacai Xie","doi":"10.1109/ICMREE.2013.6893758","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893758","url":null,"abstract":"To recycle viscous crude oil wastewater through evaporation to supply feeding water for steam injection boiler is a promising technology to benefit viscous crude oil extraction. In order to improve quality of distilled water and avoid scale formation during the evaporation process, the technology of non-thermal plasma (NTP) was tried in this research to pre-treat viscous crude oil wastewater before evaporation. Firstly the wastewater was sprayed into NTP reactor tube and then sent to the evaporator. It was found that after pretreatment, the contents of SiO2 and hardness of pretreated wastewater were reduced. Accordingly, distilled water from evaporating the pretreated wastewater was corresponded to lower hardness and decreased conductivity. The SiO2 contents in distilled water were changed without obvious rules. However as comparing the quality of distilled water from the pretreated wastewater with that from common evaporation facilities, it can be found that the quality of distilled water from NTP treated samples was better except that its hardness is higher which was caused by foam carrying for foam remover was not available in the experimental evaporation system. Low-temperature plasma, as a pretreatment technology, also hindered hard scale formation on the heating surface of evaporator and it is possible to replace scale formation chemicals in operation, providing an economical and energy-saving way for recovering wastewater water.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"38 1","pages":"653-657"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81280737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893832
Hongtao Xu, F. Talkhoncheh, Kunpeng Liu, Mo Yang
In order to create the interior multi-climate zones suitable for plant cultivation in a solar chimney proposed for the World Horticultural Exposition 2016 in China, the numerical study is performed to investigate the interior thermal characteristics of a solar chimney with 2km radius and 1km height. The simulation methodology is validated by experimental data. Available heat from radiation, steel plant and underground water are taken as the sources for multi-climate zone generation. The interior thermal characteristics in summer season (SS) and winter season (WS) scenarios are predicted to evaluate the impacts of inlet height and radius. It is found the temperature increment is around 6t and 17t for SS and WS with 3.8m inlet height. The air velocity in SS is much larger than WS. The decrease of the inlet height from 3.8m to 0.5m has minimal impact for interior thermal field. However, further decrease to 0.2m brings less air flow rate and higher temperature. The temperature field remains almost the same when the radius of solar chimney decreases from 2.0km to 1.725km. Further decrease to 1.13km results in much lower temperature. The current numerical analysis can provide preliminary suggestions for the plant cultivation in the solar chimney.
{"title":"Numerical study of the thermal characteristics of a solar chimney for creating interior multi-climate zones","authors":"Hongtao Xu, F. Talkhoncheh, Kunpeng Liu, Mo Yang","doi":"10.1109/ICMREE.2013.6893832","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893832","url":null,"abstract":"In order to create the interior multi-climate zones suitable for plant cultivation in a solar chimney proposed for the World Horticultural Exposition 2016 in China, the numerical study is performed to investigate the interior thermal characteristics of a solar chimney with 2km radius and 1km height. The simulation methodology is validated by experimental data. Available heat from radiation, steel plant and underground water are taken as the sources for multi-climate zone generation. The interior thermal characteristics in summer season (SS) and winter season (WS) scenarios are predicted to evaluate the impacts of inlet height and radius. It is found the temperature increment is around 6t and 17t for SS and WS with 3.8m inlet height. The air velocity in SS is much larger than WS. The decrease of the inlet height from 3.8m to 0.5m has minimal impact for interior thermal field. However, further decrease to 0.2m brings less air flow rate and higher temperature. The temperature field remains almost the same when the radius of solar chimney decreases from 2.0km to 1.725km. Further decrease to 1.13km results in much lower temperature. The current numerical analysis can provide preliminary suggestions for the plant cultivation in the solar chimney.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"319 1","pages":"963-967"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84230411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893692
Ying Fan, Zengping Wang, Yu-yang Lai, T. Zheng
One of the most important parts for the renewable energy to be connected to the grid is the design of the converter inside the wind farm or the solar power plant. This paper fully analyzed the influence of the arm reactance on the electro-magnetic transient mathematical model and the control strategy of the modular multi-level converter (MMC). After detailed derivation of equation, a simplified equivalent circuit was given. Then simulation results, based on a MMC model with 9 voltage-levels realized by MATLAB/SIMULINK, indicate that the effect of the inner loop current control is very sensitive to the changes of the reactance value, and that if the arm reactance is too large, the consequent potential drop on it will cause wide fluctuations of the DC voltage, thus affecting the control effect of the DC voltage control. All the simulation results coincide with the theory analysis.
{"title":"The effect of the arm reactance on the modular multi-level converter","authors":"Ying Fan, Zengping Wang, Yu-yang Lai, T. Zheng","doi":"10.1109/ICMREE.2013.6893692","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893692","url":null,"abstract":"One of the most important parts for the renewable energy to be connected to the grid is the design of the converter inside the wind farm or the solar power plant. This paper fully analyzed the influence of the arm reactance on the electro-magnetic transient mathematical model and the control strategy of the modular multi-level converter (MMC). After detailed derivation of equation, a simplified equivalent circuit was given. Then simulation results, based on a MMC model with 9 voltage-levels realized by MATLAB/SIMULINK, indicate that the effect of the inner loop current control is very sensitive to the changes of the reactance value, and that if the arm reactance is too large, the consequent potential drop on it will cause wide fluctuations of the DC voltage, thus affecting the control effect of the DC voltage control. All the simulation results coincide with the theory analysis.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"33 1","pages":"397-401"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77937732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893754
W. Xie, Zhongchao Sun, Yinwu Xiong, Lanting Li, Tao Wu, D. Liang
In order to elucidate the mechanism of selective catalytic reduction of NO with NH3 over activated coke and clarity of the effects of its surface chemical of activated coke. Five commercial coal-based activated cokes for NO reduction with NH3 were examined in a fixed-bed quartz micro reactor at 150 °C. X-ray photoelectron spectroscopy (XPS) and acid-base titration were used to characterize the surface chemical properties of the samples. The results showed that the NO conversion over the activated cokes has been increased with the amounts of surface acidic sites and oxygen content. A correlation between catalytic activity and NH3 adsorption capacity could be observed. The adsorption of NH3 on the acidic sites of the activated coke seemed to play an important role in catalytic selective reduction of NO with NH3.
{"title":"Mechanism of selective catalytic reduction of NO with NH3 over coal-based activated coke: The effects of surface chemical properties","authors":"W. Xie, Zhongchao Sun, Yinwu Xiong, Lanting Li, Tao Wu, D. Liang","doi":"10.1109/ICMREE.2013.6893754","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893754","url":null,"abstract":"In order to elucidate the mechanism of selective catalytic reduction of NO with NH3 over activated coke and clarity of the effects of its surface chemical of activated coke. Five commercial coal-based activated cokes for NO reduction with NH3 were examined in a fixed-bed quartz micro reactor at 150 °C. X-ray photoelectron spectroscopy (XPS) and acid-base titration were used to characterize the surface chemical properties of the samples. The results showed that the NO conversion over the activated cokes has been increased with the amounts of surface acidic sites and oxygen content. A correlation between catalytic activity and NH3 adsorption capacity could be observed. The adsorption of NH3 on the acidic sites of the activated coke seemed to play an important role in catalytic selective reduction of NO with NH3.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"40 1","pages":"639-641"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82460909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893762
Yongjia Jiang, Meicheng Li, Dandan Song, B. Jiang
The nanocomposite materials such as Ag/ TiO2 nanobelts and Ag/ TiO2 nanoflowers are synthesized and their photocatalytic properties are studied. With the simple hydrothermal synthesis, TiO2 nanobelts and nanoflowers are fabricated from commercial nanoparticles, followed by deposition of Ag nanoparticles through the silver mirror reaction process. According to the photocatalytic measurments, Ag/ TiO2 composite nanostructures are proved to have a better photocatalytic activity than that of nanostructures without silver doping, i.e. TiO2 nanobelt, and nanoflower structures.
{"title":"Synthetized of Ag-doped TiO2 nanostructures by silver mirror reaction and their photocatalytic activity","authors":"Yongjia Jiang, Meicheng Li, Dandan Song, B. Jiang","doi":"10.1109/ICMREE.2013.6893762","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893762","url":null,"abstract":"The nanocomposite materials such as Ag/ TiO2 nanobelts and Ag/ TiO2 nanoflowers are synthesized and their photocatalytic properties are studied. With the simple hydrothermal synthesis, TiO2 nanobelts and nanoflowers are fabricated from commercial nanoparticles, followed by deposition of Ag nanoparticles through the silver mirror reaction process. According to the photocatalytic measurments, Ag/ TiO2 composite nanostructures are proved to have a better photocatalytic activity than that of nanostructures without silver doping, i.e. TiO2 nanobelt, and nanoflower structures.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"126 26 1","pages":"670-672"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87757305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The composite spinel-type Ni0.4Cu0.6Al2O4 nanoparti-cles have been synthesized by a sol-gel method, and 0%, 2%, 4% and 6wt% Ni0.4Cu0.6Al2O4 doped pure TiO2 (P25) powders were made into slurries. Ni0.4Cu0.6Al2O4/TiO2 composite thin films were prepared on compact TiO2 film coated with ITO conductive glass by screen printing method, and as the photoanode was assembled into sensitized solar cells. The crystal structure and spectral response were characterized by powder X-ray diffraction and ultraviolet-visible diffuse reflectance spectrum. The performance of sensitized solar cells of Ni0.4Cu0.6Al2O4 nanoparticles has been tested by Solar Simulator. The influences of doping amount of mixed spinel on photoelectron properties of composite thin films and photoelectron conversion efficiency of assembled battery have been investigated. The results show that Ni0.4Cu0.6Al2O4 powder possesses spinel structure and have excellent visible-light response, the band gap is only 1.48eV, the efficiency and optical performance of solar cell is increased and improved. When the doping is 4%, the composite thin film photoelectric conversion efficiency η is 3.26%, while pure TiO2 film cell efficiency η is only 1.79%, the doped cell photoelectric conversion efficiency is enhanced by 45 %.
{"title":"Preparation of Ni0.4Cu0.6Al2O4/TiO2 composite thin film electrode and evaluation of its photoelectric properties","authors":"Nanyun Liu, Yanyan Jiang, Shuwen Jiang, Yunchao Diao, Jingxiao Liu, Zhiqiang Hu","doi":"10.1109/ICMREE.2013.6893609","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893609","url":null,"abstract":"The composite spinel-type Ni<sub>0.4</sub>Cu<sub>0.6</sub>Al<sub>2</sub>O<sub>4</sub> nanoparti-cles have been synthesized by a sol-gel method, and 0%, 2%, 4% and 6wt% Ni<sub>0.4</sub>Cu<sub>0.6</sub>Al<sub>2</sub>O<sub>4</sub> doped pure TiO<sub>2</sub> (P25) powders were made into slurries. Ni<sub>0.4</sub>Cu<sub>0.6</sub>Al<sub>2</sub>O<sub>4</sub>/TiO<sub>2</sub> composite thin films were prepared on compact TiO<sub>2</sub> film coated with ITO conductive glass by screen printing method, and as the photoanode was assembled into sensitized solar cells. The crystal structure and spectral response were characterized by powder X-ray diffraction and ultraviolet-visible diffuse reflectance spectrum. The performance of sensitized solar cells of Ni<sub>0.4</sub>Cu<sub>0.6</sub>Al<sub>2</sub>O<sub>4</sub> nanoparticles has been tested by Solar Simulator. The influences of doping amount of mixed spinel on photoelectron properties of composite thin films and photoelectron conversion efficiency of assembled battery have been investigated. The results show that Ni<sub>0.4</sub>Cu<sub>0.6</sub>Al<sub>2</sub>O<sub>4</sub> powder possesses spinel structure and have excellent visible-light response, the band gap is only 1.48eV, the efficiency and optical performance of solar cell is increased and improved. When the doping is 4%, the composite thin film photoelectric conversion efficiency η is 3.26%, while pure TiO<sub>2</sub> film cell efficiency η is only 1.79%, the doped cell photoelectric conversion efficiency is enhanced by 45 %.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"4 1","pages":"35-37"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86720219","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893753
Qiong Wu, Xiangqing Zhu, Hai Yang, He Ping, Jinglong Luo, Z. Ying, Hai Wang, Quanshui Fan, E. Wang
By combination of β-octamolybdate and Metal-Schiff-base complex, a new organic-inorganic hybrid compound Na2[Mn(Salen)(H2O)2]2[β-Mo8O26]·3H2O (1) (sa-len=N, N'-ethylene-bis(salicylideneiminate)) has been successfully isolated. Compound 1 was structurally characterized by elemental analyses, IR spectra, thermogravimetric analysis, and single-crystal X-ray diffraction. Compound 1 represents a rare example of single-crystal structured of metal-Schiff-base derivatives of polyoxometalates(POMs). Photocatalytic experiment indicated that 1 exhibited high catalytic activity for photodegradation of RhB with UV irradiation.
{"title":"Metal-salen derivatives of polyoxometalates crystalline material: A new inorganic-organic hybrid compound exhibiting photocatalytic properties","authors":"Qiong Wu, Xiangqing Zhu, Hai Yang, He Ping, Jinglong Luo, Z. Ying, Hai Wang, Quanshui Fan, E. Wang","doi":"10.1109/ICMREE.2013.6893753","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893753","url":null,"abstract":"By combination of β-octamolybdate and Metal-Schiff-base complex, a new organic-inorganic hybrid compound Na<sub>2</sub>[Mn(Salen)(H<sub>2</sub>O)<sub>2</sub>]<sub>2</sub>[β-Mo<sub>8</sub>O<sub>26</sub>]·3H<sub>2</sub>O (1) (sa-len=N, N'-ethylene-bis(salicylideneiminate)) has been successfully isolated. Compound 1 was structurally characterized by elemental analyses, IR spectra, thermogravimetric analysis, and single-crystal X-ray diffraction. Compound 1 represents a rare example of single-crystal structured of metal-Schiff-base derivatives of polyoxometalates(POMs). Photocatalytic experiment indicated that 1 exhibited high catalytic activity for photodegradation of RhB with UV irradiation.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"58 1","pages":"635-638"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89225416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/ICMREE.2013.6893612
Lingjun Kong, Guilin Chen, C. Yuan, G. Jiang, Changfei Zhu, Weifeng Liu
Polycrystalline Cu(In1-xAlx)Se2 (CIAS) thin films with chalcopyrite structure were synthesized by sol-gel spin-coating method using nitrates as precursor for low-cost photovoltaic applications. Sequential reduction and selenization treatments were performed with hydrogen and Se vapor, respectively. X-ray diffraction (XRD), SEM, EDS and UV-visible spectrophotometer analysis have been employed to examine the structural properties, surface morphology, atomic concentrations and band gaps of polycrystalline CIAS thin films. The experimental results demonstrated that the Cu(In1-xAlx)Se2 had good crystallinity, uniformity and stoichiometric composition. Simultaneously, we discussed the phenomenon and mechanism of the two-layered structure formation of the synthesized Cu(In1-xAlx)Se2 thin film.
{"title":"Preparation of Cu(In1−xAlx)Se2 thin films by sol-gel method","authors":"Lingjun Kong, Guilin Chen, C. Yuan, G. Jiang, Changfei Zhu, Weifeng Liu","doi":"10.1109/ICMREE.2013.6893612","DOIUrl":"https://doi.org/10.1109/ICMREE.2013.6893612","url":null,"abstract":"Polycrystalline Cu(In<sub>1-x</sub>Al<sub>x</sub>)Se<sub>2</sub> (CIAS) thin films with chalcopyrite structure were synthesized by sol-gel spin-coating method using nitrates as precursor for low-cost photovoltaic applications. Sequential reduction and selenization treatments were performed with hydrogen and Se vapor, respectively. X-ray diffraction (XRD), SEM, EDS and UV-visible spectrophotometer analysis have been employed to examine the structural properties, surface morphology, atomic concentrations and band gaps of polycrystalline CIAS thin films. The experimental results demonstrated that the Cu(In<sub>1-x</sub>Al<sub>x</sub>)Se<sub>2</sub> had good crystallinity, uniformity and stoichiometric composition. Simultaneously, we discussed the phenomenon and mechanism of the two-layered structure formation of the synthesized Cu(In<sub>1-x</sub>Al<sub>x</sub>)Se<sub>2</sub> thin film.","PeriodicalId":6427,"journal":{"name":"2013 International Conference on Materials for Renewable Energy and Environment","volume":"71 1","pages":"47-51"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83727073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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