【摘 要】
：
TiO2 photocatalysts have been widely studied and applied for removing bacteria, but its antibacterial efficiency is limited to the ultraviolet (UV) range of the solar spectrum. In this work, we use the gold (Au) nanorods to enhance the visible and near-in
【机 构】
：
Archives Department, China University of Petroleum (East China), Qingdao 266580, China;School of Mat
论文部分内容阅读
TiO2 photocatalysts have been widely studied and applied for removing bacteria, but its antibacterial efficiency is limited to the ultraviolet (UV) range of the solar spectrum. In this work, we use the gold (Au) nanorods to enhance the visible and near-infrared (NIR) light absorption of TiO2 NBs, a typical UV light photocatalyst, thus the enhancement of its full solar spectrum (UV, visible and NIR) photocatalytic antibacterial properties is achieved. Preliminary surface plasmon resonance (SPR) enhancement photocatalytic antibacterial mechanism is suggested. On one hand, transverse and longitudinal SPR of Au NRs is beneficial for visible and NIR light utilization. On the other hand, Au NRs combined with TiO2 NBs to form the heterostructure, which can improve the photogenerated carrier separation and direct electron transfer increases the hot electron concentration while Au NRs as the electron channel can well restrain charge recombination, finally produces the high yield of radical oxygen species and exhibits a superior antibacterial efficiency. Furthermore, we design a sterilization file cabinet with Au NR/TiO2 NB heterostructures as the photocatalytic coating plates. Our study reveals that Au NR/TiO2 NB heterostructure is a potential candidate for sterilization of bacteria and archives protection.
其他文献
早发性卵巢功能不全(premature ovarian insufficiency,POI)是指女性40岁以前出现卵巢功能衰退,其主要特征为闭经或月经稀发、低雌激素症状和生育力下降.POI与绝经不同,其并非卵巢功能的完全衰退,POI患者在较长时间内仍可出现间歇性卵巢功能恢复.部分POI患者仍有生育需求,但POI不孕患者的生育治疗手段有限,治疗效果不理想,治疗方案仍在不断探索.通过相关的病例报道及文献复习,总结部分常见的POI患者促生育治疗的方法,主要对药物、手术、卵母细胞体外激活、干细胞移植及注射富含血小
子宫腺肌病是严重危害女性健康的多发疾病,早期诊断困难.宫腔镜下可以识别子宫腺肌病患者宫腔内特异或非特异的、有时表现为细微而特征性的病变形态,包括子宫内膜内陷、血管增生、子宫内膜炎性改变、宫腔受压和囊性子宫腺肌病等,对子宫腺肌病诊断具有重要辅助作用.宫腔镜联合超声检查可以提高宫腔镜对子宫腺肌病的诊断率,同时可以进一步判定病灶大小、位置和深度.超声引导下宫腔镜定位活检取得子宫内膜肌层交界区组织病理是目前最有价值的实现子宫腺肌病的微创诊断方法,为有生育要求的患者或有保留子宫愿望的患者选择个体化的治疗方式提供了可
妊娠期糖尿病(gestational diabetes mellitus,GDM)是妊娠期的主要并发症之一,随着我国二孩政策的实施、生活水平的提高、婚姻观念的转变,在肥胖、高龄和遗传易感性等高危因素的影响下,GDM的发病率呈逐年上升趋势.目前GDM的具体发病机制尚不明确,可能与胰岛素抵抗及胰岛β细胞功能缺陷有关.GDM孕妇体内糖代谢的紊乱会进一步导致脂质代谢的异常,从而引发不良妊娠结局.其中脂肪因子,如促代谢因子(betatrophin)、趋化素(chemerin)、C1q/肿瘤坏死因子相关蛋白(CTRP
Dinuclear ytterbium and erbium based bifunction complexes Ln2L2(depma2)Cl2 (1-Ln, Ln =Yb and Er, H2L=N1,N3-bis(salicylideneimino)diethylenetriamine, depma2 = dimerized 9-diethyl-phosphonome-thylanthracene) are reported. They undergo thermo-induced consecu
多囊卵巢综合征(polycystic ovary syndrome,PCOS)以高雄激素血症、稀发/无排卵、卵巢多囊样改变以及生育力下降为主要特征,是造成育龄期女性无排卵性不孕最常见的原因,且PCOS患者多伴有肥胖,而肥胖本身对女性生育力同样有负面影响.胰高血糖素样肽1(glucagon-like peptide-1,GLP-1)作为一种重要的胃肠激素,在肥胖以及PCOS进展中具有重要作用.综述肥胖/超重女性不孕以及PCOS发生机制,GLP-1在肥胖型PCOS女性中分泌模式的改变,以期为GLP-1受体激动
An efficient PET-based probe, in which the ferrocene quencher and the naphthalimide fluorophore are linked by a disulfide bond, has been developed. This probe can be activated by GSH with fluorescence a turn-on response for blocking the PET process. In ad
A series of triphenylamine (TPA) derivatives with various substituent groups were prepared and showed different absorption and fluorescence characteristics due to the substituent effect. On account of the existence of pyridine units, these TPA derivatives
Heavy oil is treated as an undesirable raw material in traditional refining markets because of its low yield. However, its rich natural aromatic structure and heteroatomic compounds make it possible to be a precursor to large-scale production of carbon ma
Owing to the special formation of photopolymerized hydrogels, they can effectively control the formation of hydrogels in space and time. Moreover, the photopolymerized hydrogels have mild formation conditions and biocompatibility; therefore, they can be w
Negative thermal expansion (NTE) behavior has roused wide interest for the control of thermomechan-ical properties of functional materials. Although NTE behaviors have been found in kinds of compounds, it remains challenging for polymers to achieve intrin