中国科学院机构知识库网格系统: 检索

A novel double polymer modified hydrophobic/hydrophilic stationary phase for liquid chromatography 期刊论文 OAI收割
Chinese Chemical Letters, 2020, 卷号: 5181, 期号: ***, 页码: ***-***
作者: Pan Jingjun; Wang Shuai; Liang Xiaojing; Guo Yong; Fan Fangbin

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Norbornene imidazolium hexafluorophosphate (NM-MIm-PF6) Oligo(ethylene glycol)methacrylate Hydrophobic Hydrophilic Liquid chromatography (LC)

一种氮化碳膜电极光电催化氧化去除水中氰银络合物同时回收银离子的方法 专利 OAI收割
专利号: CN107651732A, 申请日期: 2018-02-02, 公开日期: 2018-02-02
作者: 赵旭; 齐璠静

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收藏 | 浏览/下载：31/0 | 提交时间：2019/11/27

一种氮化碳膜电极光电催化氧化去除水中氰银络合物同时回收银离子的方法,其特征在于：(1)将三聚氰酸与苯并胍胺以摩尔比6:1加乙醇溶解并搅拌20小时,干燥后将所得到的白色粉末均匀覆盖到导电玻璃上,煅烧2小时,制备得到g#C3N4膜电极 (2)制备好的g#C3N4电极为工作电极,钛片或者不锈钢板作为对电极,饱和甘汞电极作为参比电极,在一石英光电催化反应器中,在波长大于420nm的可见光照射到g#C3N4电极,光电催化氧化氰银络合物,在氰根离子得到氧化去除的同时,释放的银离子在阳极与阴极沉积,得到回收利用。

TiO2 Microflowers Assembled by 6-nm Single-Crystal Stranded Wires with Improved Photoelectrochemical Performances 期刊论文 OAI收割
ELECTROCHIMICA ACTA, 2017, 卷号: 250, 期号: 0, 页码: 117-123
作者: Zhou, Wei; Liu, Huijuan; Qu, Jiuhui; Zhang, Gong; Yu, Li

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6-nm Single-crystal Stranded Wires Tio2 Microflowers Photoelectrochemical

一种制备α-Fe2O3纳米球的方法 专利 OAI收割
专利类型: 发明, 专利号: CN201210323134.8, 申请日期: 2013-05-01, 公开日期: 2013-05-01
作者: 邢荣娥; 于华华; 李鹏程; 秦玉坤

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一种制备α‑Fe2O3纳米球的方法其中 2）将上述微波处理后产物自然冷却后离心其特征在于：1）以六水合三氯化铁（FeCl3·6H2O）为铁源六水合三氯化铁与尿素摩尔比为1:1‑1.5 所得沉淀采用乙醇和水进行交替洗涤尿素（CO(NH2)2）为氢氧根离子引发剂铁源浓度为1.0‑1.5mol/L 洗涤后干燥将铁源与引发剂利用超声溶解于甘油和水组成的混合溶剂中甘油和水体积比为1:2‑9 即得平均直径300‑500nm 而后置于密闭条件下进行微波处理整体结构由尺寸约20‑50nm的棒状纳米亚单元构成的α‑Fe2O3纳米球。在130‑150℃进行微波处理20‑50min

Energy transfer in Y3Al5O12:Ce 3, Pr3+ and CaMoO4:Sm3, Eu 3 phosphors (EI CONFERENCE) 会议论文 OAI收割
作者: Wang L.; Wang X.-J.; Zhang X.; Zhang X.; Zhang X.

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Non-radiative energy transfers (ET) from Ce3 to Pr3+ in Y3Al5O12:Ce3 Pr3+ and from Sm3 to Eu3 in CaMoO4:Sm3 Eu3 are studied based on photoluminescence spectroscopy and fluorescence decay patterns. The result indicates an electric dipoledipole interaction that governs ET in the LED phosphors. For Ce3 concentration of 0.01 in YAG:Ce3 Pr3+ the rate constant and critical distance are evaluated to be 4.510-36 cm 6 s-1 and 0.81 nm respectively. An increase in the red emission line of Pr3+ relative to the yellow emission band of Ce 3 on increasing Ce3 concentration is observed. This behavior is attributed to the increase of spectral overlap integrals between Ce3 emission and Pr3+ excitation due to the fact that the yellow band shifts to the red spectral side with increasing Ce3 concentration. In CaMoO4:Sm3 Eu3 Sm 3Eu3 transfer occurs from 4G5/2 of Sm3 to 5D0 of Eu3. The rate constant of 8.510-40 cm6 s-1 and the critical transfer distance of 0.89 nm are evaluated. 2010 Elsevier B.V. All rights reserved.

Energy transition between Yb3+-Tm3+-Gd3+ in Gd3+, Yb3+ and Tm3+ Co-doped fluoride nanocrystals (EI CONFERENCE) 会议论文 OAI收割
17th International Conference on Dynamical Processes in Excited States of Solids, DPC'10, June 20, 2010 - June 25, 2010, Argonne, IL, United states
作者: Zhang J.; Zhang J.; Zhang J.

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YF3: 20%Gd3+ 20%Yb3+ 0.5%Tm3+ nanocrystal has been synthesized by a hydrothermal method. The upconversion (UC) emission and energy transfer progresses between Gd3+-Yb 3+-Tm3+ under a 980-nm continuous wave semiconductor laser diode excitation have been explored. The experimental results show that the violet and ultraviolet (UV) enhancement with Tm3+ upconversion emission occurs in the nanocrystal and in the same time the UC emissions of Gd3+ from 6D9/2 6IJ 6P5/2 and 6P7/2 states to the ground state 8S7/2 are obtained too. The dynamic analysis implies that under 980-nm excitation the nanocrystal dimension plays a key role in the efficient energy transfer processes between Gd3+-Yb 3+-Tm3tt based on the energy matching conditions. 2011 Published by Elsevier B.V.

Observations and analysis of extreme ultraviolet emission between 10nm and 70nm by capillary discharge with Xe as target (EI CONFERENCE) 会议论文 OAI收割
2011 Academic International Symposium on Optoelectronics and Microelectronics Technology, AISOMT 2011, October 12, 2011 - October 16, 2011, Harbin, China
作者: Yang L.; Yang L.

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Spectra have been recorded from a Xe discharge capillary discharge source in the extreme ultraviolet (EUV) region between 10nm and 70nm. The origin of the spectra have been analyzed which have shown that the spectra between 10nm and 20nm come from the transitions of 4p-4d 4d-4f and 4d-5p by Xe 7+Xe12+ and the spectra between 20nm70nm mainly from the transitions of Xe6+Xe8+ as well. The results which have been integrated the experimental results with the theory have shown that the spectra from Xe6+Xe8+ formed in the time after the collapsed of the compressing of the plasma. 2011 IEEE.

一种海水中亚铁、三价铁及总铁含量的测定方法 专利 OAI收割
专利类型: 发明, 专利号: CN201010110284.1, 申请日期: 2010-07-21, 公开日期: 2010-07-21
吴志昊; 尤锋; 马得友; 徐冬冬; 张培军; 徐永立

收藏 | 浏览/下载：142/0 | 提交时间：2014/08/04

一种海水中亚铁 ②向步骤①所得经酸化的水样中加入1-2mol/L氢氧化钠溶液 Fe ( II ) l&alpha ③向1-5mL空白对照溶液 - A 2 &epsiv 其中 Fe ( III ) l &epsiv 已知浓度的标准溶液配制方法为 Fe ( II ) l&alpha ④在562nm波长下 ( &epsiv ⑤取0.8-4mL测定吸光度后的空白对照溶液 Fe ( II ) l - &epsiv 室温静置5-10min后 Fe ( III ) l ) C Fe ( III ) = A 2 - A 1 &alpha ⑥在562nm波长下 &alpha ⑦重复步骤⑤ ( &epsiv 在562nm波长下 Fe ( II ) l - &epsiv ⑧亚铁 Fe ( III ) l ) CFe(t)＝CFe(II)+CFe(III)其中 C Fe ( II ) = A 1 &epsiv 三价铁及总铁含量的测定方法氢氧化钠溶液与水样的体积比为1∶(20-100) 已知浓度的标准溶液及待测水样中分别加入100-500μL用0.05-0.2mol/L乙酸铵水溶液配制的0.01-0.05mol/L菲咯嗪一钠盐溶液显色空白对照溶液配制方法为取pH已经调至4-6的空白对照溶液先将空白对照溶液的吸光度设置为零后标准溶液及待测水样再加入50-250μL用氨水配制的pH为9-10的10mol/L乙酸铵水溶液混匀先将空白对照溶液的吸光度设置为零后先将空白对照溶液的吸光度设置为零后三价铁和总铁浓度计算 l为比色皿的光径。其特征在于使水样pH在4-6之间先配制与待测水样初始盐度一致的氯化钠水溶液加入FeCl3使其总铁浓度为0.1-1mg/L 测定标准溶液及待测水样的吸光度A1样加入150-750μL用1-3mol/L盐酸配制的1-2mol/L的盐酸羟胺溶液混匀测定标准溶液及待测水样的吸光度A2样测定标准溶液的吸光度A3标通过标准溶液的总铁浓度及其测定的3次吸光度先根据下述公式计算出亚铁和三价铁的吸光系数εFe(II) 具体步骤如下：①采集10-100mL水样作为待测水样再加入1-2mol/L盐酸使其pH在4-6之间 A1标 A2标 εFe(III)以及α 立即加入1-2mol/L盐酸 α＝A3/A2 盐酸与水样的体积比为1∶(20-100) 以此再结合水样测定的2次吸光度利用下述公式计算出海水水样中亚铁CFe(II) 使水样pH至1-2 三价铁CFe(III)及总铁CFe(t)浓度作为酸化水样密封室温下备用

Fabrication and photoluminescence of ZnS: Mn2+ nanowires/ZnO quantum dots/SiO2 heterostructure (EI CONFERENCE) 会议论文 OAI收割
作者: Yang L.; Wang D.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

In this paper we demonstrated the encapsulation of ZnS: Mn2+ nanowires (NWs) and ZnO quantum dots (QDs) with a layer of mesoporous SiO 2 shell for the purpose of integrating dual emission property into one common nanostructure. The average diameter of ZnS: Mn2+ NWs ZnO QDs and ZnS: Mn2+ / ZnO@SiO2 heterostructure was about 10 nm 6 nm and 22 nm respectively. Within ZnS: Mn2+ / ZnO@SiO 2 nanocomposites the intensity of the yellow-orange emission contributed by ZnS: Mn2+ NWs and the UV emission contributed by ZnO QDs was three and ten times higher than their individual components respectively. The fluorescence intensity ratio of the dual emission can be tuned by adjusting the hydrolysis time of tetraethyl orthosilicate. The peak energy of the yellow-orange and UV emission showed blueshift and redshift as increasing the temperature respectively. The anomalous enhancement of the integrated intensity for the UV emission with the temperature indicated that the high surface state density existing in ZnO QDs can overrun the influence of temperature quenching and even alter the photoluminescent properties. 2010 American Institute of Physics.

The accurate refractive indices of BIBO crystal at different temperatures 期刊论文 OAI收割
Journal of Physics D-Applied Physics, 2009, 卷号: 42, 期号: 22
L. X. Huang, X. Lin, G. Zhang, C. H. Huang and Y. Wei

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bismuth triborate bib3o6 coefficients generation nm