In situ fluorine doped ZrO2−x nanotubes for efficient visible light photocatalytic activity

Effect of Fe3+ ion doping on photocatalytic ability of nanozirconia ceramic to degrade 2, 4, 6- trichlorophenol

“…The reasons for that are most probably likely the presence of various impurity levels and intra-band states assigned to defects, which are responsible for its photoactivity [7,10,[13][14][15][16][17]. Improving of photocatalytic applicability of zirconia is a research topic in many laboratories all over across the world; the most common methods are: metal [13,[17][18][19][20][21][22][23] or nonmetal doping [24,25], coupling with semiconductors with suitable/ narrower band gap energy [15,26] or with conductive polymers [16] or graphene-based composite [27] that may cause the increaseing of the visible light sensitivity and/or control over the electron-hole recombination process. Transitional metal-doping of zirconia matrix can influence the adsorption ability on the semiconductor NPs surface of different organic/inorganic pollutants.…”

Carbon/ZrO2 aerogel composite microtube superfoam

“…The high resolution O 1s spectrum of the CZF-5.0 foam can be fitted into two component peaks. 40 The peak at about 530.5 eV is attributed to lattice oxygen (Zr–O). The peak at about 532.3 eV is attributed to the chemisorbed hydroxyl groups (Zr–OH).…”

ZnxZrO2+x-Based Photocatalyst with Dual Active Sites for Tunable Syngas Production from CO2 Photoreduction

“…Figure S10 shows the XPS fine spectra of O 1s for Zn 0.05 ZrO 2.05 , Zn 0.17 ZrO 2.17 , and Zn 0.26 ZrO 2.26 . The peak at 529.9 eV is attributed to lattice O, , while the peak at 531.5 eV is derived from the surface hydroxyl group, resulting from dissociative adsorption of H 2 O molecules on the surfaces. − The relative intensity of hydroxyl O follows the order of Zn 0.26 ZrO 2.26 (33%) > Zn 0.17 ZrO 2.17 (29%) > Zn 0.05 ZrO 2.05 (23%). Obviously, the adsorption capacity of H 2 O molecules gradually enhanced with the increase of Zn sites on the Zn x ZrO 2– x surface, suggesting that Zn sites are more likely to adsorb hydroxyl (H 2 O) groups.…”

“…Figure S10 shows the XPS fine spectra of O 1s for Zn 0.05 ZrO 2.05 , Zn 0.17 ZrO 2.17 , and Zn 0.26 ZrO 2.26 . The peak at 529.9 eV is attributed to lattice O, 31,32 while the peak at 531.5 eV is derived from the surface hydroxyl group, resulting from dissociative adsorption of H 2 O molecules on the surfaces. 33−35 The relative intensity of hydroxyl O follows the order of Zn 0.26 ZrO 2.26 (33%) > Zn 0.17 ZrO 2.17 (29%) > Zn 0.05 ZrO 2.05 (23%).…”