In Situ Growth of Vanadium Oxide on Reduced Graphene Oxide for the Low-Temperature NO-SCR by NH_3

The vanadium oxide/reduced graphene oxide(V_2 O_5/rGO) composite catalyst which determined the selective catalytic reduction activity(SCR) of NO with NH_3 was prepared by a simple solvothermal method. The physicochemical properties of the catalysts were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), Raman, X-ray energy spectrometer(XPS) and N_2 sorption isotherm measurement(BET). Results of NH_3-SCR showed that the NO conversion of V_2 O_5/rGO catalyst could reach 54.3% at 100 ℃. And the removal of NO increased to 74.6% when the temperature was up to 220 ℃. By characterizing the microstructure and morphology of the V_2 O_5/rGO catalysts prepared by in-situ growth and mechanical mixing methods, it was further shown that V_2 O_5 nanoparticles were highly dispersed and in situ growth on the rGO surface. Based on X-ray energy spectrometer, V_2 O_5/r GO catalyst had good low temperature denitrification performance due to the chemical adsorption oxygen and low-valent vanadium oxide contained in V_2 O_5/rGO catalyst, which was beneficial to the redox reaction between V_2 O_5 and graphene.     

0.2%苯扎溴铵溶液消毒效果验证

目的 验证0.2%苯扎溴铵溶液的消毒效果.方法 定量悬浮试验,用金黄色葡糖球菌、大肠埃希菌、白色念珠菌3次验证0.2%苯扎溴铵溶液的消毒效果.结果 3次试验,3种试验菌的杀菌率均大于99.9%.结论 0.2%苯扎溴铵溶液可以作为细菌和真菌的消毒剂使用.     

0.2%苯扎溴铵溶液消毒效果验证

目的验证0.2%苯扎溴铵溶液的消毒效果。方法定量悬浮试验,用金黄色葡糖球菌、大肠埃希菌、白色念珠菌3次验证0.2%苯扎溴铵溶液的消毒效果。结果 3次试验,3种试验菌的杀菌率均大于99.9%。结论 0.2%苯扎溴铵溶液可以作为细菌和真菌的消毒剂使用。     

微波炉融化培养基灵敏度的检查

目的验证微波炉融化的培养基是否符合微生物限度检查的要求。方法以2005年版中国药典中的检查方法为依据,检查微波炉融化培养基的灵敏度。结果微波炉融化培养基生长的菌落数与对照培养基生长的菌落数基本一致,灵敏度检查合格。结论用微波炉融化培养基做微生物限度检查是可行的。     

微波炉融化培养基灵敏度的检查

目的 验证微波炉融化的培养基是否符合微生物限度检查的要求.方法 以2005年版中国药典中的检查方法为依据,检查微波炉融化培养基的灵敏度.结果 微波炉融化培养基生长的菌落数与对照培养基生长的菌落数基本一致,灵敏度检查合格.结论 用微波炉融化培养基做微生物限度检查是可行的.