Visible light assisted photo-electrocatalytic oxidation of methanol using low Pt content NiO-rutile TiO2 ternary heterojunction

Synthesis of Different Pt‐ZnO Binary Composites for Synergistic Photo‐Electrocatalytic Oxidation of Methanol in Alkali

“…OH generation synergistically enhances the photo electro catalytic methanol oxidation process [60] . Moreover, the same mechanism of MOR under visible light is exhibited by the previous literature [8,46,47,61] …”

“…The oxidation products of methanol by PZ06 electrode is shown in the HPLC profile (Figure 6a) under dark and light condition. It shows that the retention tenures at 3.34, 3.82, 4.93, 6.67 and 9.92 min correspond to oxalic acid, methyl formate, formaldehyde, carbonate and formate respectively were detected as MOR products [30,47, 53] . To confirm the formation of above compounds HPLC of blank solutions were carried out.…”

“…The equilibrium potential of oxidation of CH 3 OH to CO 3 2− by regarding pH effect and potential shift between SCE and NHE in 1 M NaOH, E e value is calculated and set as −1.0986 V [30,47] . The tafel plots of all synthesized electrodes in absence and presence of light are shown in Figures S4a and b. Tafel slope, intercept and equilibrium exchange current density of all prepared PZ composites are encapsulated in Table S3.…”

Pd Nanoparticle-Decorated Novel Ternary Bi2O2CO3-Bi2MoO6-CuO Heterojunction for Enhanced Photo-electrocatalytic Ethanol Oxidation

“…To measure the photoelectric properties of the synthesized nanocatalysts, the photocurrent response measurement of Pd/BM-BOC, Pd/CuO, and Pd/BM-BOCC was performed at −0.3 V potential vs SCE by interrupting visible light with a duration of 50s as shown in Figure b. The photocurrent response diminished quickly once the light is switched off. ,, The figure reveals the higher responsive photocurrents of the Pd/BM-BOCC quaternary catalyst owing to enhanced light absorption and better interfacial charge transfer , of the quaternary catalyst during ethanol photo-oxidation.…”

“…The C2 pathway is not effective as the EOR in this route is incomplete (delivering 2 or 4 electrons) and produces acetaldehyde and acetate in alkali. − Therefore, it is crucial to improve an advanced electrocatalyst that is able to disrupt the C–C bond. Recently, one of the most promising technologies to alter solar and chemical energy into electrical energy is photoassisted electrocatalysis of ethanol that utilizes noble metal/semiconductor junctions as the photo-electrocatalyst. − The non-noble metal oxide is inexpensive, helps disperse metal nanoparticles easily, has good stability against dissolution, assists the bifunctional mechanism with oxygenated species, and facilitates the C–C bond cleavage for complete oxidation of ethanol to carbonate in alkali . Indeed, semiconductor metal oxide has the capability of alcohol oxidation under light irradiation through synergistic electro- and photocatalytic processes.…”