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用三烷基氧化膦从氰化浸出液中萃取低浓度金 李明玉1,周丽1 (1.暨南大学环境工程系) 摘要:研究了三烷基氧化膦(TRPO)-磷酸三丁酯(TBP)-煤油萃取体系对氰化浸金液中低浓度金(Ⅰ)的萃取和反萃取能力,结果表明,尽管TRPO体系中添加TBP对金(Ⅰ)的萃取率影响很小,但一定量的TBP能提高体系的反萃效果.考察了料液pH值,硫酸锂浓度等因素对萃取率的影响,探讨了不同的反萃温度,反萃相比对负载有机相中金(Ⅰ)的反萃效果.结果表明,采用TRPO-TBP-煤油组成的有机相,对金(I)质量浓度为9.5 mg/L,盐析剂硫酸锂浓度为1.0 mol/L的碱性氰化液在相比A/O=1∶1条件下进行萃......
High Temperature Phase Transitions of Graphene Oxide Paper from Graphite Oxide SolutionYan-Jia Liou,Wu-Jang HuangDepartment of Environmental Engineering and Science,National Ping-Tung University of Science and Technology摘 要:Graphene oxide paper(GOP) can be prepared through simplified filtration of a graphite oxide solution. It possesses similar......
have been investigated.Excellent performances of Al/HfTiO/GeO_x N_y/n-Ge MOS capacitor have been achieved with an equivalent oxide thickness of 1.44 nm,physical thickness of 7.2 nm,equivalent permittivity of~35.interface-state density of 2.1×10~(11)eV~(-1)cm~(-2),equivalent oxide charge of -1.96×10~(12)cm~(-2) and gate leakage current of 2.71×10~(-4)A/cm~2 at V_g=1 V.Experimental results also......
Relationship between the Local Structures of Titanium Oxide Photocatalysts and Their Reactivities in the NO Decomposition Hiromi YAMASHITA1,Masaya MATSUOKA1,Masakazu ANPO1,Jin-Long ZHANG1 (1.Department of Applied Chemistry, College of Engineering Osaka Prefecture University, Gakuen-cho, Sakai, Osaka 599-8531, Japan) 摘要: The photocatalysts included titanium oxide were prepared by ion-exchange......
Direct fabrication of cerium oxide hollow nanofibers by electrospinning LI Mei1,CUI Qizheng2,DONG Xiangting2,WANG Jinxian2 (1.State Key Laboratory on High Power Semiconductor Lasers,Changchun... formation mechanism of CeO2 hollow nanofibers was proposed. Key words:cerium; cerium oxide; nanofibers; electrospinning; rare earths; [全文内容正在添加中] ......
Article ID: 1003-6326(2005)06-1356-05 Semiconducting of nanocrystalline tin oxide and its influence factors LI Li-li(李历历), DUAN Xue-chen(段学臣) (School of Materials Science... diffraction confirms the same result as Mssbauer spectroscopy. Key words: tin oxide; doping; Mssbauer spectroscopy; XPS CLC number: TQ134.3 Document......
materials. 关键词:oxidation; electronic material; superconductor; thin oxide film; [全文内容正在添加中] ......
Tantalum oxide barrier in magnetic tunnel junctionsYU Guanghua, REN Tingting, JI Wei, TENG Jiao, and ZHU Fengwu摘 要:<正> Tantalum as an insulating... the oxidation states of Ta barrier. The experimental results show that the chemical state of tantalum is pure Ta5+ and the thickness of the oxide is 1.3 nm. The unoxidized Ta in the barrier may chemically reacted......
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J. Cent. South Univ. (2016) 23: 1823-1830 DOI: 10.1007/s11771-016-3236-4 Tuning microstructure and surface chemistry of reduced graphene oxide by mild reduction LENG Xian(冷娴), LIU Ru-tie(刘如铁), ZOU... Heidelberg 2016 Abstract: Reduced graphene oxide (RGO) sheets with varied contents and types of oxygenated groups were synthesized by Hummers treatment of natural graphite powders followed by different......