Efficient rhodamine B degradation using electro‐fenton process with PbO 2 ‐coated titanium as the anode | Zendy

Tian Jiangnan | Zendy; Yang Maohua | Zendy; Mu Tingzhen | Zendy; Sharshar Moustafa Mohamed | Zendy; Ayobami Matthew Olajuyin | Zendy; Xing Jianmin | Zendy

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Efficient rhodamine B degradation using electro‐fenton process with PbO 2 ‐coated titanium as the anode

Author(s) -

Tian Jiangnan,

Yang Maohua,

Mu Tingzhen,

Sharshar Moustafa Mohamed,

Ayobami Matthew Olajuyin,

Xing Jianmin

Publication year - 2018

Publication title -

environmental progress and sustainable energy

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.495

H-Index - 66

eISSN - 1944-7450

pISSN - 1944-7442

DOI - 10.1002/ep.12903

Subject(s) - materials science , anode , rhodamine b , titanium , cyclic voltammetry , tafel equation , dielectric spectroscopy , scanning electron microscope , electrochemistry , electrolysis , electrolyte , analytical chemistry (journal) , linear sweep voltammetry , nuclear chemistry , electrode , chemical engineering , metallurgy , chemistry , photocatalysis , composite material , catalysis , biochemistry , chromatography , engineering

To replace the high cost Pt anode, Ti based PbO 2 electrode (PbO 2 ‐Ti) and Ti based SnO 2 doped with Sb electrode (SnO 2 /Sb‐Ti) were fabricated and compared for treating 0.1 mM Rhodamine B (RhB) in Electro‐Fenton (EF) process. Scanning electron microscopy, energy dispersive X‐ray, X‐ray diffraction spectrometry were carried out to study the surface morphology, element composition, and substance composition of the anodes (PbO 2 ‐Ti and SnO 2 /Sb‐Ti). Linear Sweep Voltammetry, cyclic voltammetry, Tafel, and electrochemical impedance spectroscopy were conducted to examine the electrochemical properties of the anodes (Pt, PbO 2 ‐Ti, SnO 2 /Sb‐Ti, and Ti). These assessments showed that PbO 2 ‐Ti had the best performance. Then, the influence of varied parameters (pH, types of anodes, current density, and electrolyte) were explored. Almost complete decolorization (99.01%) was reached at pH 3, current density 50 A/m 2 , 0.05 M Na 2 SO 4 using PbO 2 ‐Ti as the anode after 20 min electrolysis. Under these conditions, 90.48% of total organic carbon was removed after 180 min. Finally, the durability of PbO 2 ‐Ti was evaluated via accelerated service life test and exhibited long service lifetime (∼4000 h). © 2018 American Institute of Chemical Engineers Environ Prog, 38: 189–197, 2019

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