hello folks, i was wondering if any other possible process of separating hydrogen from water without or less risk, any alternative method of electrolysis. i have googled this thing and stuck to process of introducing a catalyst 'titania(titanium oxide)' in the presence of sunlight, directly converts water into the molecules of hydrogen and oxygen. But now what? I mean how to separate this two different gases? i suppose semi-permeable membrane can help in separation. guide me if i am wrong.