Synthesis of Hierarchical BiOBr Nanostructure Flowers by PVP-Assisted Hydrothermal Method and Their Photocatalytic Activities

PREPARATION AND CHARACTERIZATION OF VISIBLE-LIGHT-DRIVEN Ce-DOPED CdS NANOWIRES FOR PHOTODEGRADATION OF RHODAMINE B

“…Several conventional treatment methods of organic pollutants from wastewater including biodegradation, absorption, membrane filtration, flocculation-coagulation and ozonation have a common drawback because they are unable to completely remove dyes from wastewater, including the cause of secondary pollution and expensive treatment process [1,2,4,5]. Thus, a visible light driven photocatalyst as green technology has been focused in the degradation of environmental pollutants under visible light by active radicals because visible light is available in the solar spectrum and is abundant (∼43%) much more than UV light (∼4%) [2,[5][6][7].…”

Simultaneous removal of Cr(vi) and TC over BiO1−XBr/CeVO4 S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates

“…47 The absorption band at 513 cm −1 reflected on the graph was indexed to the tensile vibration of the Bi–O bond. 48 Besides, the strong absorption band at 825 cm −1 and the weak absorption band at 418 cm −1 were attributed to the adsorption of the V–O bond of VO 4 3− and Ce–O bond, which meant that the crystalline CeV phase had been formed in the prepared samples. 41 The band at 418 cm −1 could be ascribed to N–H asymmetric tensile vibration, 49 which may be due to the nitrogen released by diammonium cerium nitrate and ammonium vanadate on the surface of CeV.…”

Advanced photocatalytic performance of PVP-modified BiOBr materials for the removal of 2,4-DCP and mechanism insight

“…The self-assembled BiOBr structured flower grows through the Ostwald maturation process to form the final BiOBr nanostructured flower. 27,31 As a result, this leads to the reduction of S BET and the appearance of a large number of piled pores at an appropriate PVP content (see Table S1 †). Such a structure will contribute to the surface enrichment of organic pollutants, the enhanced scattering and absorption of light, and the effective transfer of active species between pollutants and catalysts.…”

“…20 It was found that the addition of PVP could enhance the zeta potential and enhance the adsorption and degradation of rhodamine B. Phuruangrat et al studied the effect of the amount of PVP on the catalytic effect of BiOBr and found that the addition of PVP enhanced the degradation activity of the photocatalyst. 27 However, so far, most studies have focused on the hydrothermal modification of BiOBr to improve its degradation ability, but there are few studies on the formation of PVP surfactant induced catalyst materials and photocatalytic mechanism.…”