Two cyano\|bridged complexes {\\-2\[Fe(CN)\-6\]}\-∞(L=NH\-2CH\-2CH\-2CH\-2OH(ampt)(1),NH\-2CH\-2CH(CH\-3)OH(amtt)(2)) and cyanobridged Ni\+Ⅱ\-6Fe\+Ⅱ cluster \[Fe(CN—Ni(tetren))\-6\](ClO\-4)\-8(tetren)(3) were synt...Two cyano\|bridged complexes {\\-2\[Fe(CN)\-6\]}\-∞(L=NH\-2CH\-2CH\-2CH\-2OH(ampt)(1),NH\-2CH\-2CH(CH\-3)OH(amtt)(2)) and cyanobridged Ni\+Ⅱ\-6Fe\+Ⅱ cluster \[Fe(CN—Ni(tetren))\-6\](ClO\-4)\-8(tetren)(3) were synthesized,and have been characterized by elemental analysis and IR spectrum.The experimental results show that the oxide state of Fe is changed from Fe\+Ⅲ to Fe\+Ⅱ after the synthesis reaction.The magnetization versus T and magnetic susceptibility of (2) were measured and showed that the interaction between Cu\+Ⅱ ions separated by diamagnetic low spin Fe\+Ⅱ is weak antiferromagnetic.展开更多
用溶胶-凝胶法制得Cu/Fe2O3-TiO2光催化材料。用XRD、Ram an、TPR、IR、TEM、UV-V is DRS测试技术和光催化反应等对固体材料的结构和性能进行了表征。结果表明,Fe2O3的质量分数为10%时,在TiO2表面以单分子层分散,Fe2O3的引入使TiO2吸光...用溶胶-凝胶法制得Cu/Fe2O3-TiO2光催化材料。用XRD、Ram an、TPR、IR、TEM、UV-V is DRS测试技术和光催化反应等对固体材料的结构和性能进行了表征。结果表明,Fe2O3的质量分数为10%时,在TiO2表面以单分子层分散,Fe2O3的引入使TiO2吸光限蓝移。Fe2O3含量超过单分子层分散时,有晶相Fe2O3生成,光吸收性能下降。Fe—O—Ti键的形成加强了半导体之间的相互作用,有利于光生载流子在半导体间的输送。少量Cu的引入,使复合材料的吸光域向可见光范围扩展。光催化反应性能与材料的光响应能力密切相关。在光催化CO2和CH3NH2直接合成NH2CH2COOH的反应中,负载质量分数为10%Fe2O3的光催化反应性能最优。在120℃、常压、空速200 h-1、CO2与CH3NH2摩尔比为1∶1和6.5×10-4W/cm2的紫外灯照射下,CH3NH2转化率为1.35%,NH2CH2COOH选择性达92.0%。展开更多
文摘Two cyano\|bridged complexes {\\-2\[Fe(CN)\-6\]}\-∞(L=NH\-2CH\-2CH\-2CH\-2OH(ampt)(1),NH\-2CH\-2CH(CH\-3)OH(amtt)(2)) and cyanobridged Ni\+Ⅱ\-6Fe\+Ⅱ cluster \[Fe(CN—Ni(tetren))\-6\](ClO\-4)\-8(tetren)(3) were synthesized,and have been characterized by elemental analysis and IR spectrum.The experimental results show that the oxide state of Fe is changed from Fe\+Ⅲ to Fe\+Ⅱ after the synthesis reaction.The magnetization versus T and magnetic susceptibility of (2) were measured and showed that the interaction between Cu\+Ⅱ ions separated by diamagnetic low spin Fe\+Ⅱ is weak antiferromagnetic.
文摘用溶胶-凝胶法制得Cu/Fe2O3-TiO2光催化材料。用XRD、Ram an、TPR、IR、TEM、UV-V is DRS测试技术和光催化反应等对固体材料的结构和性能进行了表征。结果表明,Fe2O3的质量分数为10%时,在TiO2表面以单分子层分散,Fe2O3的引入使TiO2吸光限蓝移。Fe2O3含量超过单分子层分散时,有晶相Fe2O3生成,光吸收性能下降。Fe—O—Ti键的形成加强了半导体之间的相互作用,有利于光生载流子在半导体间的输送。少量Cu的引入,使复合材料的吸光域向可见光范围扩展。光催化反应性能与材料的光响应能力密切相关。在光催化CO2和CH3NH2直接合成NH2CH2COOH的反应中,负载质量分数为10%Fe2O3的光催化反应性能最优。在120℃、常压、空速200 h-1、CO2与CH3NH2摩尔比为1∶1和6.5×10-4W/cm2的紫外灯照射下,CH3NH2转化率为1.35%,NH2CH2COOH选择性达92.0%。
