在外重原子微扰剂Pb(Ac)2存在下,基于罗丹明6 G(Rhodamine 6G,简写为R)的SiO2纳米微球(简写为R-SiO2)在醋酸纤维素膜(ACM)上于λex/λem=482.38/648.59 nm处能发射强而稳定的室温燐光信号.由该发光微球标记的麦胚凝集素(Triticum vulgar...在外重原子微扰剂Pb(Ac)2存在下,基于罗丹明6 G(Rhodamine 6G,简写为R)的SiO2纳米微球(简写为R-SiO2)在醋酸纤维素膜(ACM)上于λex/λem=482.38/648.59 nm处能发射强而稳定的室温燐光信号.由该发光微球标记的麦胚凝集素(Triticum vulgare lectin简称WGA),不仅仍能在ACM上与碱性磷酸酶(AP)发生定量的特异性亲和吸附反应,且亲和吸附反应产物能发射更强的室温燐光(RTP)信号,据此建立了R-SiO2纳米微球标记凝集素(WGA)亲和吸附(AA)固体基质室温燐光法(AA-SS-RTP)测定AP的一种新方法.本法的线性范围为1.00～360.00 ag AP spot-1(样品体积0.4μL/斑,对应浓度2.50～900.00fg/ml)),工作曲线的回归方程为△Ip=16.24+0.8856 m AP/ag spot-1,r=0.9993.检出限为0.14ag spot-1.分别对1.00和360.00 ag spot-1 AP重复测定11次,RSD为3.9%和3.1.%.本方法灵敏、准确、精密度好,已成功用于人血清中AP的测定.展开更多
The composite thin film of TiO 2/CTAB was prepared on quartz substrate by using super-molecular self-assembly method. The structure of the thin film was characterized by means of X-ray diffraction and UV-Vis absorptio...The composite thin film of TiO 2/CTAB was prepared on quartz substrate by using super-molecular self-assembly method. The structure of the thin film was characterized by means of X-ray diffraction and UV-Vis absorption spectrum. The results of UV-Vis absorption spectrum indicate that the diameter of the TiO 2 nanoparticles is 2 nm. The results of X-ray diffraction indicate that the thin film is composed of organic and inorganic layers in alternately orderly arrangement. The distance between the organic layer and inorganic layer is 4.61 nm. The thicknesses of organic layer and inorganic layer are 2.58 and 2 nm, respectively.展开更多
由上海铼恩氢能科技有限公司研发的纳米碳镁基固态氢存储材料,是一种在低压(储氢压力为0.3~0.7 MPa)、常温下储存固态氢的材料,具有安全性高、高容量优势。该产品为可逆固态储氢纳米碳镁基金属复合材料,应用超微颗粒制造技术,基于金属...由上海铼恩氢能科技有限公司研发的纳米碳镁基固态氢存储材料,是一种在低压(储氢压力为0.3~0.7 MPa)、常温下储存固态氢的材料,具有安全性高、高容量优势。该产品为可逆固态储氢纳米碳镁基金属复合材料,应用超微颗粒制造技术,基于金属材料粒子与氢粒子的电子交互跃迁原理,使氢分子成为固态氢粒子,大幅缩小氢分子的体积,储氢体积密度达到116 kg H_(2)/m^(3)(水容积)。展开更多
文摘在外重原子微扰剂Pb(Ac)2存在下,基于罗丹明6 G(Rhodamine 6G,简写为R)的SiO2纳米微球(简写为R-SiO2)在醋酸纤维素膜(ACM)上于λex/λem=482.38/648.59 nm处能发射强而稳定的室温燐光信号.由该发光微球标记的麦胚凝集素(Triticum vulgare lectin简称WGA),不仅仍能在ACM上与碱性磷酸酶(AP)发生定量的特异性亲和吸附反应,且亲和吸附反应产物能发射更强的室温燐光(RTP)信号,据此建立了R-SiO2纳米微球标记凝集素(WGA)亲和吸附(AA)固体基质室温燐光法(AA-SS-RTP)测定AP的一种新方法.本法的线性范围为1.00～360.00 ag AP spot-1(样品体积0.4μL/斑,对应浓度2.50～900.00fg/ml)),工作曲线的回归方程为△Ip=16.24+0.8856 m AP/ag spot-1,r=0.9993.检出限为0.14ag spot-1.分别对1.00和360.00 ag spot-1 AP重复测定11次,RSD为3.9%和3.1.%.本方法灵敏、准确、精密度好,已成功用于人血清中AP的测定.
文摘The composite thin film of TiO 2/CTAB was prepared on quartz substrate by using super-molecular self-assembly method. The structure of the thin film was characterized by means of X-ray diffraction and UV-Vis absorption spectrum. The results of UV-Vis absorption spectrum indicate that the diameter of the TiO 2 nanoparticles is 2 nm. The results of X-ray diffraction indicate that the thin film is composed of organic and inorganic layers in alternately orderly arrangement. The distance between the organic layer and inorganic layer is 4.61 nm. The thicknesses of organic layer and inorganic layer are 2.58 and 2 nm, respectively.
文摘由上海铼恩氢能科技有限公司研发的纳米碳镁基固态氢存储材料,是一种在低压(储氢压力为0.3~0.7 MPa)、常温下储存固态氢的材料,具有安全性高、高容量优势。该产品为可逆固态储氢纳米碳镁基金属复合材料,应用超微颗粒制造技术,基于金属材料粒子与氢粒子的电子交互跃迁原理,使氢分子成为固态氢粒子,大幅缩小氢分子的体积,储氢体积密度达到116 kg H_(2)/m^(3)(水容积)。
