Enhanced photocatalytic activity of V 2 O 5 –ZnO composites for the mineralization of nitrophenols

The effect of sunlight induced surface defects on the photocatalytic activity of nanosized CeO2 for the degradation of phenol and its derivatives

“…Nitrophenols, due to the high stability and solubility imparted by NO 2 group, are resistant to degradation and transform into more toxic off shoots [6,35,36]. The toxicity and jeopardies of chlorophenols are well recognized which depends on the position of the chloro group with respect to the phenolic hydroxyl group [37,38].…”

Spinel Ferrite Mediated Photo‐Fenton Degradation of Phenolic Analogues: A Detailed Study Employing Two Distinct Inorganic Oxidants

“…When HP was used as oxidant, PNP was completely degraded in 10,15,20 was used as catalyst the activity was quite slow as compared to other ferrites as only 53% of pollutant was degraded even after 8 h.…”

“…[6][7][8] Nitro-phenols are versatile compounds which are extensively used as raw materials or intermediates in manufacture of drugs, fungicides, insecticides, dyes, rubber chemicals, etc. [9,10] On the other hand chlorophenols also have bactericidal, fungicidal, and antiseptic properties. [11] Both chloro-and nitrophenols are highly stable molecules which not only are recalcitrant to biodegradation but also are toxic and carcinogenic; hence, are a great threat to environment.…”

“…[36] In the present analysis, degradation of PNP was conducted at a wide pH range (2)(3)(4)(5)(6)(7)(8)(9)(10) in the presence of all ferrites and oxidants. The noteworthy results are presented in Figure 5.…”

The performance of silver modified tungsten oxide for the removal of 2-CP and 2-NP in sunlight exposure: Optical, electrochemical and photocatalytic properties

“…Both of these are established active photocatalysts, however, suffer insignificant photon absorption in the visible region of the spectrum that limits their use in the natural sunlight as its major portion (46%) is composed of the visible region. As photocatalysis is entirely dependent on the excitation source, it is now a well-recognized fact that it can only achieve its optimum wide spread efficacy by utilizing economical and renewable excitation source like sunlight Aslam et al, 2014b;Aslam et al, 2014c;Hameed et al, 2015;Kositzi et al, 2004;Malato et al, 2009;Bahnemann, 2004). Hence the development of sunlight active catalysts, especially capable of utilizing the major portion of the solar spectrum i.e.…”