The TiO2 nanotubes based three-dimensionally macroporous SnO2 with mesoporous walls (TNTs/3D-SnO2) have been fabricated using the dual-templating strategy. The physicochemical properties of the electrodes were characterized by means of techniques such as SEM, HRTEM, XRD, XPS, BET, CV, EIS. The structural features of 3D SnO2 had an important influence on the electrocatalytic performance. With PMMA and F127 as the template, the obtained TNTs/3D-SnO2-2 electrode had the outstanding structure, the smallest lattice parameters for SnO2, and largest surface area when compared to the flat TNTs/SnO2 electrode. The results of electrochemical measurements indicated that the TNTs/3D-SnO2-2 electrode provided the largest electroactive sites and best electron transmission capability. Due to the 3D macroporous skeleton with mesopores and smaller nanoparticles, the TNTs/3D-SnO2-2 electrode exhibited the superior electrocatalytic activity toward degradation of benzoic acid. The mass transfer coefficient k(m) at TNTs/3D-SnO2-2 electrode is 3.79 x 10(-5) m s(-1), 2.4 times as much as that of flat TNTs/SnO2. The improved.OH generation and enhanced mass transport were responsible for the increased electrocatalytic oxidation ability of TNTs/3D-SnO2-2. (C) 2016 Elsevier B.V. All rights reserved.