Eco‐Friendly Transition‐Metal‐Ion‐Doped rGO Nanocomposites with Enhanced Photocatalytic Activities

Abstract

Figure 2. X-ray absorption spectroscopy (XAS) results of a) C K-edge, b) O K-edge, and c) TM L-edge spectra of the four tested rGO samples.

Reduction-Assisted Calcination Enhances the Photocatalytic Activity of ZnO and WO3 Nanoparticles in Biomass Conversion

“…However, the photocatalytic activity was affected in the presence of DMPO in the presence of 5,5-dimethyl-1-pyrroline N -oxide (DMPO), a well-known radical (e.g., • OH, h + , and • O 2 – ) scavenger (Figure a,b). Therefore, the photocatalytic oxidation of HMF occurs via the generation of radicals in the reaction solution …”

“…Therefore, the photocatalytic oxidation of HMF occurs via the generation of radicals in the reaction solution. 42 Moreover, a linear correlation between ln(C 0 /C) and the reaction time was obtained for the four MO NPs, and the oxidation reaction processes were fitted with pseudo-first-order kinetics to determine the first-order rate constants (k) for the photocatalytic reaction of each MO NPs (Figure S1). The k values for the pristine ZnO, WO 3 , ZnO−NaBH 4 , and WO 3 − NaBH 4 NPs were calculated to be 3.44 × 10 −2 , 2.73 × 10 −2 , 0.122, and 0.117 h −1 , respectively.…”

Sunlight-driven photocatalytic conversion of furfural and its derivatives

“…Pham et al also reported a Cr-free and base-free Fe@rGO photocatalytic system. 101 But this catalyst showed rather a low selectivity of FDCA (29%) at the same conversion of HMF. Pham et al synthesized Zn x Cd 1−- x S nanoparticle photocatalysts with different concentrations of Zn 2+ ions ( x = 0.0, 0.3, 0.5 or 0.7).…”