Highly efficient visible-light photocatalytic ethane oxidation into ethyl hydroperoxide as a radical reservoir

Abstract

Photocatalytic ethane conversion into value-added chemicals is a great challenge especially under visible light irradiation. The production of ethyl hydroperoxide (CH3CH2OOH), which is a promising radical reservoir for regulating the...

Distinct Pathways in Visible-Light Driven Thermo-Photo Catalytic Methane Conversion

“…The combination of thermal catalysis and photocatalysis, which leads to a novel thermo-photo catalytic process, has hardly been investigated for CH 4 conversion. As demonstrated in our previous work, thermal energy could make the reactants more active, thus providing a sufficient driving force for visible-light photocatalysis. − Photoenergy in turn could significantly lower the energy input in traditional thermal catalysis. ,, The synergetic effect of thermal and photo energies offers the possibility for realizing both high efficiency and low cost. Nevertheless, the participation of both thermo- and photoenergies makes this process more complex, and different products might be resulted via different pathways.…”

Highly Selective Photocatalytic Aerobic Oxidation of Methane to Oxygenates with Water over W‐doped TiO2

“…(15)]. As W‐doped TiO 2 can inhibit the oxidation of H 2 O to form excess ⋅OH which led to serious overoxidation, high selectivity to oxygenated liquid products was achieved by suppressing the formation of CO x [35] …”

Thermo-photo catalysis: a whole greater than the sum of its parts

“…40 Moreover, very recently, an unprecedentedly high CH 3 CH 2 OOH yield of 5.6 mmol h À1 g À1 was achieved in visible-light driven thermo-photo catalytic partial oxidation of C 2 H 6 over Au/WO 3 catalyst, which is 6 times higher than that at room temperature. 90 Secondly, the introduction of thermal energy enables the effective utilization of visible light in photocatalytic processes. 21,22,28,39,40,90 In 2015, Hu and co-workers first revealed the intrinsic issue in visible-light photocatalysis and demonstrated their design of thermo-photo catalysis for enhancing the contribution of visible light to H 2 production from 0 to B85% of the entire solar spectrum.…”

“…90 Secondly, the introduction of thermal energy enables the effective utilization of visible light in photocatalytic processes. 21,22,28,39,40,90 In 2015, Hu and co-workers first revealed the intrinsic issue in visible-light photocatalysis and demonstrated their design of thermo-photo catalysis for enhancing the contribution of visible light to H 2 production from 0 to B85% of the entire solar spectrum. 21 Besides, the absolute H 2 yield under visible light was enhanced from 0 to 497 mmol h À1 g À1 .…”

“…66 Moreover, one can control catalytic selectivity by inhibiting the generation of undesirable products based on the thermodynamic design. 28,90 For charge-carrier-mediated catalysis involving either photo carriers or hot carriers, the efficient separation and transfer of charge carriers should be ensured. 63,141 This principle is opposite to that of thermal-energy-driven (photo-thermal) catalysis.…”