Crystalline phase regulation of anatase–rutile TiO₂ for the enhancement of photocatalytic activity

Abstract

Biphasic TiO2 with adjustable crystalline phases was prepared by the hydrothermal-calcination method assisted by nitric acid (HNO3) and hydrogen peroxide (H2O2), using potassium titanate oxalate (K2TiO(C2O4)2) as the titanium source.

Preparation of BiOCl/Bi2WO6 Photocatalyst for Efficient Fixation on Cotton Fabric: Applications in UV Shielding and Self-Cleaning Performances

“…where D is the photodegradation rate, C is the absorbance of 10 mg/L aqueous MB and RhB, and C t is the absorbance of aqueous MB and RhB after t min of illumination [31,32].…”

Osteoblast-like Cell Proliferation, ALP Activity and Photocatalytic Activity on Sintered Anatase and Rutile Titanium Dioxide

“…Anatase TiO 2 has higher photocatalytic activity than rutile TiO 2 [ 6 ]. Therefore, the catalytic activity was high at the sintering temperatures 700 and 800 °C due to the anatase TiO 2 , and very low at 1000 °C due to the rutile TiO 2 .…”

“…This is because a single crystal of the rutile TiO 2 has a simple structure, exhibits low catalytic activity and is chemically equivalent and stable. Anatase TiO 2 is higher cytotoxic compared to rutile TiO 2 [ 6 ]. At sintering temperature 700 °C, because the crystal phase was anatase, the proliferation was inhibited, and the number of cells increased only slightly in Figure 3 .…”

“…Moreover, it was clarified that the rutile TiO 2 sintered at 1300 °C showed good biocompatibility and increase in ALP activity. On the other hand, anatase TiO 2 has a photocatalytic effect and high antibacterial activity [ 6 ], but it has not been investigated from the standpoint of a bone grafting or implant material. As the component ratio of anatase and rutile phases in TiO 2 changes depending on the sintering temperature, it may be possible to create TiO 2 with the properties of both phases.…”

Preparation and characterization of self-cleaning cotton fabric loaded with self-dispersive and reactive biphasic TiO2

“…Biphasic TiO 2 was synthesized in our own laboratory in previous work (Wang et al 2020). Anhydrous ethanol (AR) and 3-aminopropyltriethoxysilane (≥98%, KH-550) were obtained from Sinopharm Chemical Reagent Co., Ltd. Cyanuric chloride (AR) , tetrahydrofuran (AR), methyl orange (AR), sodium paminobenzenesulfonate (AR) were received from Shanghai Aladdin Bio-Chem Technology Co., Ltd. Ammonia (25%, AR), acetone (AR), sodium chloride (NaCl, AR), potassium carbonate (K 2 CO 3, AR) and sodium carbonate (Na 2 CO 3 , AR) were provided by Chengdu Aike Chemical Reagent Co., Ltd. 100% Cotton fabrics (linear density, 20×20 tex; fabric density, 300 yarns/10 cm×300 yarns/10 cm; weight, 120 g/m 2 ; plain weave) were supplied by Nantong Weiteng Textile Co., Ltd.…”