NaBH4; aq. NaOH in water to aq. soln. of HAuCl4 added dropwise NaOH soln. under vigorous stirring; anatase support added to soln. and suspn. aged at room temp. for 2 h with stirring; soln. of NaBH4 in ice water added and suspn. aged for 8 h (see Appl. Cat. A 226(2002) 1); catalyst Au/TiO2 centrifugated, washed with water and ethanol, and driedin vac. at 60°C overnight;