The sulfur-doped titanium dioxide (S/TiO2) was prepared by calcinations. The photocatalytic decomposition of benzoic acid solution was carried out under simulated sun light; the photocatalytic activity is 2.7 times of...The sulfur-doped titanium dioxide (S/TiO2) was prepared by calcinations. The photocatalytic decomposition of benzoic acid solution was carried out under simulated sun light; the photocatalytic activity is 2.7 times of TiO2. The results of XRD show that the sulfur can restrain the crystallization transformation of TiO2 from anatase to rutile, although the calcinations temperature has attained 500 ℃, the crystallization still is anatase entirely. The responsive wavelength range of S/TiO2 was shifted; it has obvious absorption in the region from 320 to 550 nm. The S (S6+) substituted for some of the lattice titanium atoms in S/TiO2. At the same time the XRF also prove the formation of S6+ and the atomic content is 2.13%.展开更多
The N/TiO2 was prepared by wet hydrolyzation method. The photocatalytic decomposition of benzoic acid solution was carried out under simulated sun light; the photocatalytic activity was 2.47 times of TiO2. The product...The N/TiO2 was prepared by wet hydrolyzation method. The photocatalytic decomposition of benzoic acid solution was carried out under simulated sun light; the photocatalytic activity was 2.47 times of TiO2. The products were characterized by XRD, SPS, EFISPS and XPS, respectively. The results of XRD showed that the N could restrain the crystallization transformation of TiO2 from anatase to rutile. The N/TiO2 was still n-type semiconductor, and the absorbance wavelength appeared red-shifted by N-doping. The band gap of N/TiO2 was decreased to 2.7 eV. The amount of doped-N is about 0.94at.%. The binding energy of N1s are 396.62 eV (Ti-N bonds, β-N) and 400.87 eV (N-N bonds, γ-N2), respectively, and the photocatalytic activity of N/TiO2 under visible light is related to the β-N. The N atoms replace the O of the TiO2 and form the Ti-N bonding.展开更多
目的探讨高压氧(HBO)综合治疗对妊高征患者的临床疗效及血清内皮素-1(ET-1)和一氧化氮(NO)表达水平的影响。方法选取2017年3月至2018年9月东南大学附属中大医院生殖医学中心妊娠期高血压患者92例,按照随机数字表法分为对照组与观察组,每...目的探讨高压氧(HBO)综合治疗对妊高征患者的临床疗效及血清内皮素-1(ET-1)和一氧化氮(NO)表达水平的影响。方法选取2017年3月至2018年9月东南大学附属中大医院生殖医学中心妊娠期高血压患者92例,按照随机数字表法分为对照组与观察组,每组46例。对照组给予硝苯地平缓释片和硫酸镁注射液降压,观察组在对照组治疗的基础上联用HBO治疗。观察2组患者血压及尿蛋白量含量变化;ELISA法检测血清ET-1及NO的水平,统计2组胎儿宫内发育迟缓、胎儿宫内窘迫、胎儿生物物理评分(BPS)、胎儿脐动脉收缩压与舒张压比值(S/D)及产后1 min Apgar评分。结果治疗10 d后,2组患者的收缩压以及舒张压均明显降低,且观察组治疗后明显低于对照组,差异有统计学意义(P<0.05或P<0.01);与治疗前比较,2组患者的尿蛋白含量均明显降低,且观察组治疗后[(0.6±0.1)mg/L]低于高于对照组[(0.9±0.1)mg/L],差异有统计学意义(P<0.05或P<0.01);2组患者血清中ET-1含量降低,NO含量升高(P<0.01),且与对照组相比,观察组患者血清中ET-1的水平降低,NO水平升高,差异有统计学意义(P<0.05或P<0.01);观察组胎儿宫内发育迟缓、宫内窘迫、BPS评分、S/D值以及新生儿产后1 min Apgar评分均明显优于对照组,差异有统计学意义(均P<0.05)。结论HBO综合治疗妊高征具有明确的临床疗效,并且对ET-1以及NO的水平具有显著性影响。展开更多
文摘The sulfur-doped titanium dioxide (S/TiO2) was prepared by calcinations. The photocatalytic decomposition of benzoic acid solution was carried out under simulated sun light; the photocatalytic activity is 2.7 times of TiO2. The results of XRD show that the sulfur can restrain the crystallization transformation of TiO2 from anatase to rutile, although the calcinations temperature has attained 500 ℃, the crystallization still is anatase entirely. The responsive wavelength range of S/TiO2 was shifted; it has obvious absorption in the region from 320 to 550 nm. The S (S6+) substituted for some of the lattice titanium atoms in S/TiO2. At the same time the XRF also prove the formation of S6+ and the atomic content is 2.13%.
文摘The N/TiO2 was prepared by wet hydrolyzation method. The photocatalytic decomposition of benzoic acid solution was carried out under simulated sun light; the photocatalytic activity was 2.47 times of TiO2. The products were characterized by XRD, SPS, EFISPS and XPS, respectively. The results of XRD showed that the N could restrain the crystallization transformation of TiO2 from anatase to rutile. The N/TiO2 was still n-type semiconductor, and the absorbance wavelength appeared red-shifted by N-doping. The band gap of N/TiO2 was decreased to 2.7 eV. The amount of doped-N is about 0.94at.%. The binding energy of N1s are 396.62 eV (Ti-N bonds, β-N) and 400.87 eV (N-N bonds, γ-N2), respectively, and the photocatalytic activity of N/TiO2 under visible light is related to the β-N. The N atoms replace the O of the TiO2 and form the Ti-N bonding.
文摘目的探讨高压氧(HBO)综合治疗对妊高征患者的临床疗效及血清内皮素-1(ET-1)和一氧化氮(NO)表达水平的影响。方法选取2017年3月至2018年9月东南大学附属中大医院生殖医学中心妊娠期高血压患者92例,按照随机数字表法分为对照组与观察组,每组46例。对照组给予硝苯地平缓释片和硫酸镁注射液降压,观察组在对照组治疗的基础上联用HBO治疗。观察2组患者血压及尿蛋白量含量变化;ELISA法检测血清ET-1及NO的水平,统计2组胎儿宫内发育迟缓、胎儿宫内窘迫、胎儿生物物理评分(BPS)、胎儿脐动脉收缩压与舒张压比值(S/D)及产后1 min Apgar评分。结果治疗10 d后,2组患者的收缩压以及舒张压均明显降低,且观察组治疗后明显低于对照组,差异有统计学意义(P<0.05或P<0.01);与治疗前比较,2组患者的尿蛋白含量均明显降低,且观察组治疗后[(0.6±0.1)mg/L]低于高于对照组[(0.9±0.1)mg/L],差异有统计学意义(P<0.05或P<0.01);2组患者血清中ET-1含量降低,NO含量升高(P<0.01),且与对照组相比,观察组患者血清中ET-1的水平降低,NO水平升高,差异有统计学意义(P<0.05或P<0.01);观察组胎儿宫内发育迟缓、宫内窘迫、BPS评分、S/D值以及新生儿产后1 min Apgar评分均明显优于对照组,差异有统计学意义(均P<0.05)。结论HBO综合治疗妊高征具有明确的临床疗效,并且对ET-1以及NO的水平具有显著性影响。
