Synergism of Co/Na in BiVO₄ microstructures for visible-light driven degradation of toxic dyes in water

Abstract

In this work, we report a synergism of Co/Na in Co@Na-BiVO4 microsrutures to boost the photocatalytic performance of bismuth vanadate (BiVO4) catalysts. A co-precipitation method has been employed to synthesize...

Simultaneous elimination of toxic dyes, ciprofloxacin and Cr(vi) contents from polluted water: escalating surface plasmon electrons of Ag cocatalysts on BiVO4 microstructures

“…For this purpose, BiVO 4 and Ag–BiVO 4 photocatalysts were developed via a self-optimized hydrothermal method. 28 The XRD, Raman, and XPS results confirm the monoclinic BiVO 4 and presence of Ag metal. The SEM analysis revealed the dendritic type of Ag–BiVO 4 microstructure, whereas BET analysis depicts the large surface area and higher pore volume of the aforementioned catalysts.…”

“…39,40 The presence of these metals generates extra active sites available to reduce the pollutants in water. 41 In order to eliminate the major pollutants from sewage water from various industrial zones of Pakistan namely Lahore, Faisalabad, Karachi, Multan and Islamabad zones, herein, we have synthesized BiVO 4 and Ag-BiVO 4 via selfoptimized conditions 28 (i.e. temperature/solvents) for the elimination of selective dyes (i.e.…”

“…Among various vanadates, BiVO 4 catalysts have been found to be very effective catalysts that can efficiently work in visible light owing to their suitable band gaps. 28 Moreover, the stability, low cost, ease of synthesis and non-toxic nature make BiVO 4 very efficient for pollutant elimination. The oxygen (2p) and bismuth (6s) orbitals increase the mobility of photoinduced charges that result in higher charge transfer to the active sites.…”

Facile transfer of surface plasmon electrons of Au-NPs to Zn3V2O8surfaces: a case study of sunlight driven H2generation from water splitting

“…It has been reported that, TiO 2, ZnO, ZnS, SrTiO 3 and WO 3 work in UV light due to larger band gaps (3.2 eV, 3.3 eV, 3.6 eV, 3.2 eV and 2.6-3.0 eV respectively) 10 . Whereas CdS, g-C 3 N 4 and BiVO 4 work in the presence of visible light having band gaps of 2.42 eV, 2.44 eV and 2.40 eV respectively 11 . Although CdS is an attractive photocatalyst because it can work in visible light (due to its smaller band gap) but photo-corrosion is a main drawback that retards its efficiency.…”

“…[2][3][4][5][6][7][8][9] It has been reported that TiO 2, ZnO, ZnS, SrTiO 3 , and WO 3 work in UV light due to their larger band gaps (3.2 eV, 3.3 eV, 3.6 eV, 3.2 eV, and 2.6-3.0 eV, respectively), 10 whereas CdS, g-C 3 N 4 , and BiVO 4 work in the presence of visible light as they have band gaps of 2.42 eV, 2.44 eV, and 2.40 eV, respectively. 11 Although CdS is an attractive photocatalyst because it can work in visible light (due to its smaller band gap), it is subject to photocorrosion, which is the main drawback that retards its efficiency. Some recent reports have revealed that ZnCdS is a promising catalyst for hydrogen production because it has a good light corrosion resistance and responds to visible light.…”