Harvesting and conversion of solar energy through photo electrochemical water splitting provides an efficient way for generation of chemical energy from solar energy. semiconductors, as photocatalyst, play a central role in solar harvesting devices, and there have been many efforts to improve their performance including band gap tuning to increase photon absorption cross sections, adding sensitizers to enhance charge carrier lifetimes by decreasing electron-hole separation to improve surface redox reaction rates. in the present work, a generic chemical approach for fabricating highly stable electrochemically/photocatalytically active monolayer/tailored multilayered azide/alkyne modified gold/tio2/sio2 nanoparticles on alkyne/azide modified si, ito, tio2, stainless steel and glass substrates via click chemistry has been proposed. the stability, ohmic properties, electro/photo electrochemical and photocatalytic properties of the interface have been demonstrated via photo electrochemical water splitting, methanol oxidation and photocatalytic degradation of rhodamine b (rhb) dye. the results suggest that the proposed approach can be extended for large-scale fabrication of highly stable hetero structure materials centric electrochemical and photo electrocatalytic devices.