One-step preparation and photocatalytic performance of vanadium doped TiO2 coatings

A mini-review on rare earth metal-doped TiO2 for photocatalytic remediation of wastewater

“…In order to reduce the electron-hole recombination and to shift the absorption wavelength to the desired visible region (>λ = 400 nm), various selective surface modifications have been conducted including metal and non-metal doping (Chen and Mao 2007;Castro et al 2011;Ramacharyulu et al 2014;Vasilić et al 2015), dye sensitization (Chowdhury et al 2012;Daghrir et al 2013) and coupling to increase the efficiency of the photocatalyst (Daghrir et al 2013). Generally, the applications of titania are divided into two categories (i) energy and (ii) environmental (Chen and Mao 2007).…”

Greatly Enhanced Electrocatalytic N2 Reduction on TiO2 via V Doping

“…Figure a shows the X‐ray photoelectron spectroscopy (XPS) survey spectrum of V‐TiO 2 , evidencing the presence of Ti, V, and O elements. As shown in Figure b, the typical Ti 2p 3/2 peak for Ti 4+ at 458.61 eV is observed, and other two Ti 2p 1/2 peaks at 463.78 and 464.59 eV are attributed to Ti 3+ and Ti 4+ , respectively . The peaks at 515.79 and 516.91 eV in the region of V 2p are ascribed to V 4+ and V 5+ , respectively (Figure c), suggesting that V species exist in the rutile lattice of V‐TiO 2 in the form of V 4+ and V 5+ .…”

“…As shown in Figure b, the typical Ti 2p 3/2 peak for Ti 4+ at 458.61 eV is observed, and other two Ti 2p 1/2 peaks at 463.78 and 464.59 eV are attributed to Ti 3+ and Ti 4+ , respectively . The peaks at 515.79 and 516.91 eV in the region of V 2p are ascribed to V 4+ and V 5+ , respectively (Figure c), suggesting that V species exist in the rutile lattice of V‐TiO 2 in the form of V 4+ and V 5+ . For the O 1s region (Figure d), the peak at 529.81 eV is assigned to OTi bond in V‐TiO 2 lattice, and the peak at 531.08 eV is attributed to OH bonds in surface hydroxyl groups (such as absorbed H 2 O) …”

Preparation of Cu(ii) porphyrin–TiO2 composite in one-pot method and research on photocatalytic property

“…TiO 2 -based photocatalytic processes can be used in various applications such as waste water treatment, gas purication and environmental protection [1][2][3] due to its nontoxicity, good chemical stability, high photocatalytic activity and versatile properties. [4][5][6][7] In addition, it has shown a great potential as an inexpensive, environmentally friendly and sustainable treatment technology to remove pollutants from sewage to overcome the shortcomings of the conventional technologies.…”

“…8,9 However, the utilization for solar energy is limited by the narrow band gap of light absorption region in TiO 2 , 10,11 which impedes its commercialization. To improve the photocatalytic efficiency of TiO 2 , many techniques 12,13 have been carried out with the aim of eliminating the inefficient exploitation of visible light for TiO 2 . The synthesis of excellent photocatalytic TiO 2 materials with heterogeneous structure, which is extensively considered to possess higher photocatalytic activity, 14 may have profound implications for organic dye pollutant photodegradation.…”