To improve the photocatalytic effect of TiO 2 and the possibility of recycling, three different types of commercial activated carbon (AC) are used to prepare the TiO 2 /AC composite photocatalyst using the sol-gel method. The properties and catalytic activity of TiO 2 /AC composite are evaluated in comparison with bare TiO 2 , based on several characterization techniques and methylene blue (MB) photodegradation studies. The results show that the addition of AC
Artificial
photosynthesis is a feasible solution for obtaining
hydrogen peroxide (H2O2), a clean fuel and an
ecologically beneficial oxidant. The reductive synthesis of H2O2 from O2 combined with the oxidative
synthesis of value-added products is particularly attractive from
an economic standpoint. In a benzyl alcohol (BA)/water two-phase system,
we used PhC2Ag, a hydrophobic silver-based coordination
polymer, to achieve the photocatalytic generation of H2O2. PhC2Ag’s hydrophobic nature allows
it to well disperse in the BA rather than consume H2O2 in water. To study the optical, photocatalytic, and photoelectrochemical
properties, different precursor aqueous solution approaches have been
designed to synthesize PhC2Ag (AC) and PhC2Ag
(N). It is found that PhC2Ag (AC) showed apparent quantum
yields of 8.62% at 420 nm. This work demonstrated that a low-pH aqueous
solution and by simply decreasing the volume of the aqueous phase
are beneficial for H2O2 synthesis. The applications
of hydrophobic photocatalysts in the field of photocatalytic energy
generation have been substantially expanded.
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