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| 1 | Preparation,characterization of Mo,Ag-loaded BiVO_4 and comparison of their degradation of methylene blue显示文摘Two types of metal-loaded visible-light-driven photocatalysts,Mo-BiVO4and Ag-BiVO4,were synthesized by wet impregnation method.Material poperties were characterized by UV-vis diffuse reflectance spectroscopy,X-ray diffraction,field emission scanning electron microscopy,X-ray photoelectron spectroscopy and low temperature nitrogen adsorption-desorption.Photocatalytic activity of the obtained materials was investigated through degrading methylene blue(MB) solution under visible-light irradiation.The results reveal that both metal loaded-BiVO4catalysts have monoclinic scheelite structure.Mo and Ag exist as oxides on the surface of the particles.The changes of absorption in visible-light region,band gap(E g) and specific surface area(A BET) caused by loading Ag are more obvious than those caused by loading Mo.But the isoelectric point of Ag-BiVO4decreases less than that of Mo-BiVO4does.Both catalysts show higher photocatalytic activity than pure BiVO4,resulting in the significantly improved efficiency of degradation of MB.And the degradation efficiency of these two metal-loaded BiVO4photocatalysts is similar to each other.However,mechanisms of such enhancement are different.The decrease of isoelectric point helps Mo-BiVO4improve the degradation efficiency.As for Ag-BiVO4,the augmentation of absorption in visible-light region as well as the abatement of E g plays more important roles. | LIU KunJie CHANG ZhiDong LI WenJun CHE Ping ZHOU HuaLei | 2012 | Science China Chemistry2012，55，9： | 10 |
| 2 | The novel H1N1 Influenza A global airline transmission and early warning without travel containments显示文摘A novel influenza A (H1N1) has been spreading worldwide. Early studies implied that international air travels might be key cause of a severe potential pandemic without appropriate containments. In this study, early outbreaks in Mexico and some cities of United States were used to estimate the preliminary epidemic parameters by applying adjusted SEIR epidemiological model, indicating transmissibility infectivity of the virus. According to the findings, a new spatial allocation model totally based on the real-time airline data was established to assess the potential spreading of H1N1 from Mexico to the world. Our estimates find the basic reproductive number R0 of H1N1 is around 3.4, and the effective reproductive number fall sharply by effective containment strategies. The finding also implies Spain, Canada, France, Panama, Peru are the most possible country to be involved in severe endemic H1N1 spreading. | CHANG ChaoYi CAO ChunXiang WANG Qiao CHEN Yu CAO ZhiDong ZHANG Hao DONG Lei ZHAO Jian XU Min GAO MengXu ZHONG ShaoBo HE QiSheng WANG JinFeng LI XiaoWen | 2010 | Chinese Science Bulletin2010，55，26： | 6 |
| 3 | Extraction of lithium from the simulated pyrometallurgical slag of spent lithium-ion batteries by binary eutectic molten carbonates显示文摘The effective and low-temperature extraction of lithium from the pyrometallurgical slag of spent lithium-ion batteries(LIBs)remains a great challenge.Herein,potassium carbonate/sodium carbonate(K_(2)CO_(3)/Na_(2)CO_(3)),which could form a eutectic molten salt system at 720℃,was used as a roasting agent to extract lithium from pyrometallurgical slag.Lithium was successfully extracted from the slag by K_(2)CO_(3)/Na_(2)CO_(3) roasting followed by water leaching.Theoretical calculation results indicate that the lengths of Li-O bonds increase after K^(+)/Na^(+)adsorption,resulting in the easy release of Li^(+)from the LiAlSi_(2)O_(6) lattice after roasting with K_(2)CO_(3)/Na_(2)CO_(3).Thermogravimetry-differential scanning calorimetry results indicate that the eutectic phenomenon of K_(2)CO_(3) and Na_(2)CO_(3) could be observed at 720℃ and that the reaction of the slag and eutectic molten salts occurs at temperatures above 720℃.X-ray diffraction results suggest that Li^(+)in the slag is exchanged by K^(+)in K_(2)CO_(3) with the concurrent formation of KAlSiO_(4),while Na_(2)CO_(3) mainly functions as a fluxing agent.The lithium extraction efficiency can reach 93.87%under the optimal conditions of a roasting temperature of 740℃,roasting time of 30 min,leaching temperature of 50℃,leaching time of 40 min,and water/roasted sample mass ratio of 10:1.This work provides a new system for extracting lithium from the pyrometallurgical slag of spent LIBs. | Hui Dang Zhidong Chang Hualei Zhou Sihang Ma Min Li Jialing Xiang | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，9： | 2 |
| 4 | Na_(2)SO_(4)-NaCl binary eutectic salt roasting to enhance extraction of lithium from pyrometallurgical slag of spent lithium-ion batteries显示文摘Effectively extracting lithium at a relatively low temperature from the slag produced by the pyrometallurgical treatment of spent lithium-ion batteries remains a great challenge,which limits the acquirement of lithium.Herein,we proposed a eutectic system to roast slag at a lower temperature based on sodium sulfate-sodium chloride(Na_(2)SO_(4)-NaCl)binary eutectic salts.The optimal roasting conditions are as follows:the slag was roasted at 750℃with a(SO_(4)^(2-)+Cl^(-))/Li+molar ratio of 5:1 for 120 min.Followed by aqueous leaching 5 min at room temperature with a water/roasted samples mass ratio of 30:1,it can get 97.07%lithium extraction efficiency. | Hui Dang Zhidong Chang Xue Wu Sihang Ma Yifei Zhan Na Li Wenbo Liu Wenjun Li Hualei Zhou Changyan Sun | 2022 | Chinese Journal of Chemical Engineering2022，35，1： | 1 |
| 5 | Separation of glycyrrhizic acid and liquiritin from glycyrrhiza uralensis fisch extract by three-liquid-phase extraction systems显示文摘 | SHEN Shufeng CHANG Zhidong LIU Ji | 2007 | Separation and Purification Technology2007，53，： | 1 |
| 6 | Simultaneous determination of glycyrrhizic acid and liquiritin in gly- cyrrhiza uralensis extract by HPLC with ELSD detection 显示文摘 | SHEN Shufeng CHANG Zhidong LIU Ji | 2006 | Journal of Liquid Chromatography Related Technolo- gies2006，29，： | 1 |
| 7 | Reuse and valorization of vanadium and tungsten from waste V~Oc--WOJ Ti02 SCR catalyst 显示文摘 | Huo Yiting Chang Zhidong Li Wenjun | 2015 | Waste Biomass Valor2015，，6： | 1 |
| 8 | Three-liquid-phase extraction systems for separation of phenol and pnitrophenol from wastewater显示文摘 | Shufeng Shen Zhidong Chang Huizhou Liu | 2006 | Separation and Purification Technology2006，49，21： | 1 |
| 9 | Simultaneous determination of glycyrrhizic acid and liquiritin in glyeyrrhiza uralensis extract by HPLC with ELSD detection显示文摘 | SHEN Shufeng CHANG Zhidong LIU Ji | 2006 | Journal of Liquid Chromatography and Related Technologies2006，29，16： | 1 |
| 10 | Preferentially selective extraction of lithium from spent LiCoO_(2)cathodes by medium-temperature carbon reduction roasting显示文摘Lithium recovery from spent lithium-ion batteries(LIBs)have attracted extensive attention due to the skyrocketing price of lithium.The medium-temperature carbon reduction roasting was proposed to preferential selective extraction of lithium from spent Li-CoO_(2)(LCO)cathodes to overcome the incomplete recovery and loss of lithium during the recycling process.The LCO layered structure was destroyed and lithium was completely converted into water-soluble Li2CO_(3)under a suitable temperature to control the reduced state of the cobalt oxide.The Co metal agglomerates generated during medium-temperature carbon reduction roasting were broken by wet grinding and ultrasonic crushing to release the entrained lithium.The results showed that 99.10%of the whole lithium could be recovered as Li2CO_(3)with a purity of 99.55%.This work provided a new perspective on the preferentially selective extraction of lithium from spent lithium batteries. | Daixiang Wei Wei Wang Longjin Jiang Zhidong Chang Hualei Zhou Bin Dong Dekun Gao Minghui Zhang Chaofan Wu | 2024 | International Journal of Minerals,Metallurgy and Materials2024，31，2： | 0 |
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