In this work, a deposition-precipitation method was used toprepare gold–copper bimetallic nanoparticles supported on TiO2nanowires (NWs), utilizing urea as the precipitating agent. Thismethod has been reported to be a very effective in synthesizingAu/TiO2and Au-based bimetallic catalysts because of its efficacy toproduce metal particle sizes of few nanometers [21–24]. 1D TiO2nanostructures, such as NWs have received appreciable attentionfor catalytic applications due to their peculiar physical properties,high crystallinity and thermal stability and they also offered uniqueopportunities for adjusting the material features to obtain specialsites that can strongly affect activity of the catalyst [25,26]. Forthese reasons, TiO2NWs were employed as the support material inthis study. The nanostructured TiO2NWs were prepared by a facilemolten salt flux technique [27]. The as-synthesized catalyst wasused for the one-pot conversion of cellobiose into gluconic acid andits derivatives in the O2environment. These reactions have beenstudied recently due to the application of gluconic acid in phar-maceutical processes and as water-soluble cleansers and additivesin the food industry [28]. Furthermore, the effect and possible roleof titania nanowires as compared other forms of titania (TiO2-P25and TiO2(75% Anatase-25% Rutile) powder, the effect of hydrogenreduction as compared to calcination in air of Au–Cu/TiO2NWsand the role of Cu as an active catalyst for replacing part of goldby enabling the replacement of high gold loading catalyst with alower gold loading catalysts were investigated toward the conver-sion of cellobiose to gluconic acid as compared to our earlier work[29], where we investigated the influence of hydrogen reductionon titania supported-gold nanoparticles monometallic catalystsand compared their catalytic performance with gold supportedon zeolite-HY, Carbon nanotube and Al2O3supports. Efforts weremade to illustrate the interactions between gold and copper andalso to investigate the surface composition of the as-synthesizedcatalyst. Interactions between the metal nanoparticles and the sup-port material was also investigated with the aid of characterizationtechniques based on the experimental results in this study andprevious theoretical studies reported in the literature.