Photocatalytic behavior and photo-corrosion of visible-light-active silver carbonate/titanium dioxide

Ag2CO3/UiO-66(Zr) composite with enhanced visible-light promoted photocatalytic activity for dye degradation

“…However, the XRD pattern of AgCO/UiO-66-0.5 used for dye degradation shows a small new peak between 38° and 39° that should belong to metallic Ag (JCPDS: 65-2871), implying that Ag 2 CO 3 in the Ag 2 CO 3 /UiO-66 composite was photocorroded under the visible-light irradiation. This phenomenon was also reported in other Ag 2 CO 3 based photocatalyst studies [9,14,72]. The stability of AgCO/UiO-66-0.5 was further studied by reusing the composite for three more cycles of dye degradation.…”

Enhanced photocatalytic oxidation of propylene over V-doped TiO2 photocatalyst: Reaction mechanism between V5+ and single-electron-trapped oxygen vacancy

“…The as-prepared NTA has a diffraction peak at 2Â = 8.6 • , which is the characteristic peak of tubular structure of NTA. NTA belongs to orthorhombic system in terms of crystal structure, which has been well elucidated elsewhere [15][16][17][18][19][20][21][22][23][24][25]. The effects of V doping concentration on the phase structures of the TiO 2 powders are shown in Fig.…”

“…Although the novel V o • -TiO 2 not only extends distinctly photoresponse to visible-light region but also has excellent stability, this novel TiO 2 has not any photocatalytic activity under visible light irradiation [15][16][17]. However, compared with the corresponding sample obtained using P25 as Ti source under the same condition, V o • -TiO 2 possessing high photocatalytic activity and excellent stability can be achieved upon doping or modifying NTA using other elements and/or compounds, such as Pt, N, Ag, and AgCO 3 [18][19][20][21][22][23][24][25]. Vanadium ions doped TiO 2 has been one of the frequent topics of the investigation, because it can apparently extend the light absorption of TiO 2 into visible light region and increases carrier lifetime [8,[26][27][28][29][30][31][32].…”

Influence of the crystal structure of Ag2CO3 on the photocatalytic activity under visible light of Ag2CO3-Palygorskite nanocomposite material

“…The photocatalytic activity of pure Ag 2 CO 3 is well known [30,32,57]. As preliminary experiment the activity of as-prepared Pal-Ag 2 CO 3 -1h nanocomposite sample synthesized according to protocol 1 was first analyzed using the tests described in the experimental section.…”

“…In this respect, despite the issue of its sensitivity to photo-corrosion [29][30][31][32], silver carbonate (Ag 2 CO 3 ) was reported to exhibit highly efficient photoactivity under visible light [30,[32][33][34][35]. Also, Ag-based compounds are well known for antibacterial activity [36][37][38].…”