Reuse of Fenton sludge as an iron source for NiFe 2 O 4 synthesis and its application in the Fenton-based process

Synthesis of Cu2O–CuFe2O4 microparticles from Fenton sludge and its application in the Fenton process: the key role of Cu2O in the catalytic degradation of phenol

“…5(b Fenton and Cu 2+ coupled system has been studied for the enhanced mineralization of phenol, with phenol removal efficiency as high as 94% was achieved in Fenton-Cu 2+ system at initial phenol concentration of 100 mg L À1 . 24,37 In addition, Stoia et al prepared MnFe 2 O 4 nanoparticles, which was used for the oxidative degradation of phenol at initial concentration of about 50 mg L À1 . 38 Phenol removal efficiency of 90% could be achieved at pH of 3.0-3.5 under the catalyst dosage of 3 g L À1 .…”

“…21) and CuFe 2 O 4 , 22 and ironcopper bimetallic nanoparticles embedded within ordered mesoporous carbon composite, 23 have been utilized as the catalyst for heterogeneous Fenton like process to remove organic contaminants from wastewater. In our previous study, NiFe 2 O 4 were synthesized through co-precipitation method followed by sintering at 800 C. 24 In the Fenton system using NiFe 2 O 4 as heterogeneous catalyst, phenol removal efficiency as high as 95 AE 3.4% could be achieved, indicating excellent catalytic performance of NiFe 2 O 4 in the heterogeneous Fenton process. Roonasi and Nezhad carried out a comparative study to investigate the performance of synthetic M-ferrite nanoparticles (M ¼ Cu, Zn, Fe or Mn) in heterogeneous catalysis.…”

Carbon Nanotubes Incorporated Z-Scheme Assembly of AgBr/TiO2 for Photocatalytic Hydrogen Production under Visible Light Irradiations

“…The stable activity was observed for five consecutive cycles owing to the smooth transfer of electrons across the electronic interface between AgBr and TiO 2 through bCNTs. Similarly, Xin et al [37] reported that the activity of Ag/AgBr/GdVO 4 was stable without any significant loss for five consecutive cycles. Likewise, Xu et al [38] used the AgBr/AgIn(MoO 4 ) 2 photocatalysts for the degradation of dyes and observed stable and smooth performance for six cycles.…”

Synthesis of nanomaterial from industrial waste and its application in environmental pollutant remediation

“…On the other hand, in bottom-up approach the ions are chemically combined together to form the particles [21,22]. Industrial waste derived nanomaterials synthesis technique by bottom up approach includes co-precipitation [23][24][25][26][27], hydrothermal method [17,[28][29][30][31][32][33], Microwave irradiation [34] and by top down approach include ball milling technique [35][36][37][38][39]…”