Visible light-active sub-5 nm anatase TiO2 for photocatalytic organic pollutant degradation in water and air, and for bacterial disinfection

Wang, Xiaowen; Hu, Huawen; Yang, Zongyue; Kong, Yeeyee; Fei, Bin; Xin, John Haozhong

doi:10.1016/j.catcom.2015.09.014

Cited by 35 publications

(17 citation statements)

References 35 publications

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“…As for ε-CL, a typical FTIR absorption at ~1729 cm −1 can be indexed to the lactone group. After polymerization with mPEG, the OH end group of mPEG-PCL-OH can be verified by the FTIR absorption around 3547, 1100 and 740 cm −1 assigned to the OH stretching, CO stretching and OH bending vibrations respectively 32 36 37 38 . After coupling mPEG-PCL-OH with HMDI, the NCO group (corresponding to the IR absorption at 2251 cm −1 ) of HMDI disappears, accompanied by the emergence of the amide group, as marked in Fig.…”

Section: Resultsmentioning

confidence: 94%

Graphene oxide-enhanced sol-gel transition sensitivity and drug release performance of an amphiphilic copolymer-based nanocomposite

Wang

Lee

et al. 2016

Sci Rep

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We report the fabrication of a highly sensitive amphiphilic copolymer-based nanocomposite incorporating with graphene oxide (GO), which exhibited a low-intensity UV light-triggered sol-gel transition. Non-cytotoxicity was observed for the composite gels after the GO incorporation. Of particular interest were the microchannels that were formed spontaneously within the GO-incorporated UV-gel, which expedited sustained drug release. Therefore, the present highly UV-sensitive, non-cytotoxic amphiphilic copolymer-based composites is expected to provide enhanced photothermal therapy and chemotherapy by means of GO’s unique photothermal properties, as well as through efficient passive targeting resulting from the sol-gel transition characteristic of the copolymer-based system with improved sensitivity, which thus promises the enhanced treatment of patients with cancer and other diseases.

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Section: Resultsmentioning

confidence: 94%

Graphene oxide-enhanced sol-gel transition sensitivity and drug release performance of an amphiphilic copolymer-based nanocomposite

Wang

Lee

et al. 2016

Sci Rep

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“…As a result, the TiO 2 lms were transparent until 5-times coating. In 2015, Wang et al 21 reported visible-light-sensitive sub-5 nm TiO 2 nanoparticles, which were applied in the degradation of organic pollutants in water and air, and the bacterial disinfection eld. Those sub-5 nm TiO 2 nanoparticles were fabricated without any doping or calcination treatments, maintaining abundant hydroxyls on the surfaces and subsurface, which indicated a high ratio of surface to bulk defects.…”

Section: Photocatalytic Disinfection Of Tio 21 Photocatalytic Disinfmentioning

confidence: 99%

Research progress of photocatalytic sterilization over semiconductors

et al. 2019

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“…Nevertheless, each of these structures has its own application. For example, anatase is usually considered to be the most photoactive of the three polymorphs and thus it is used for the degradation of organic pollutants (Wang et al, 2015;Fisli et al, 2017) and dye-sensitized solar cells (Hagfeldt & Grätzel, 1995;Sofyan et al, 2017); brookite also has an application in the field of photocatalysis (Xie et al, 2009), whereas rutile is usually used the most in perovskite solar cells (Saif et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Nano Rosette TiO2 Hydrothermally Grown on Glass Substrate at Different Reaction Time and Acid Concentration

Sofyan¹,

Yuwono²,

Ridhova³

et al. 2018

IJTech

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The characteristics of nano rosette TiO2 hydrothermally grown on a glass substrate at different reaction times and acid concentrations has been examined. The hydrothermal reaction was performed at 170°C for 3, 4, 5, and 6 hours whereas the crystallization was achieved through calcination at 450°C for 90 minutes. The growth mechanism was observed by employing the hydrothermal reaction under different acid concentrations: 0%, 12.5%, 25%, and 50% v/v HCl. The morphology, formation, crystallization, and growth mechanism of the nano rosette TiO2 were characterized using a field emission scanning electron microscope (FE-SEM) and X-ray diffraction (XRD). The electron images showed that after 3 hours of hydrothermal reaction time, the nucleation process has just taken place; the formation of the nano rosette was completed after 6 hours. The results also showed that the acid environment plays a dominant role in determining the three-dimensional (3D) architecture of the nano rosette TiO2. Structural studies from XRD showed that different acid concentrations resulted in different crystalline formations. The nano rosette rutile TiO2 crystal structure was formed after 6 hours of hydrothermal reaction under 1:1 distilled water and HCl with a structure indexed to rutile P42/mnm with lattice parameters of a = 4.557(6) Å and c = 2.940(5) Å.

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Visible light-active sub-5 nm anatase TiO2 for photocatalytic organic pollutant degradation in water and air, and for bacterial disinfection

Cited by 35 publications

References 35 publications

Graphene oxide-enhanced sol-gel transition sensitivity and drug release performance of an amphiphilic copolymer-based nanocomposite

Graphene oxide-enhanced sol-gel transition sensitivity and drug release performance of an amphiphilic copolymer-based nanocomposite

Research progress of photocatalytic sterilization over semiconductors

Characteristics of Nano Rosette TiO2 Hydrothermally Grown on Glass Substrate at Different Reaction Time and Acid Concentration

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