Premium
Determination of Chemical Oxygen Demand Based on Novel Photoelectro‐bifunctional Electrodes
Author(s) -
Qu Xiao,
Tian Min,
Chen Shuai,
Liao Baoqiang,
Chen Aicheng
Publication year - 2011
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201000641
Subject(s) - bifunctional , chemical oxygen demand , electrocatalyst , electrode , anode , detection limit , oxygen , chemistry , electrochemistry , nuclear chemistry , clark electrode , materials science , inorganic chemistry , wastewater , chromatography , catalysis , organic chemistry , engineering , electrolyte , waste management
A novel photoelectro‐bifunctional electrode (TiO 2 /Ti/TiO 2 ‐Pt) for the rapid determination of chemical oxygen demand (COD) has been developed. The TiO 2 nanotubes, serving as the photocatalyst and the support of the electrocatalyst, were directly grown on both sides of a Ti plate by anodic oxidation. Pt nanoparticles were loaded on one side of TiO 2 nanotubes by the photoreduction method. For the COD determination, the bifunctional electrode exhibits a low detection limit (9.5 mg/L), high sensitivity of 3.55×10 −3 mA/(mg/L COD) and high Cl − tolerance (1400 mg/L). When used for the test of real wastewater samples, the results were in excellent agreement with those determined by the standard K 2 Cr 2 O 7 method.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom