Improved Synthesis of Reduced Graphene Oxide-Titanium Dioxide Composite with Highly Exposed{001}Facets and Its Photoelectrochemical Response

Abstract

Crystal facet engineering has attracted worldwide attention, particularly in facet manipulation of titanium dioxide (TiO2) surface properties. An improved synthesis by solvothermal route has been employed for the formation of TiO2with highly exposed001facets decorated on reduced graphene oxide (RGO) sheets. The RGO-TiO2composite could be produced with high yield by following a stringently methodical yet simple approach. Field emission scanning electron microscope and high resolution transmission electron microscope imaging reveal that the structure consists of TiO2nanoparticles covered with TiO2nanosheets of exposed001facets on a RGO sheet. The photocurrent response of the RGO-TiO2composite was discovered to outperform that of pure TiO2, as a ~10-fold increase in photocurrent density was observed for the RGO-TiO2electrodes. This may be attributed to rapid electron transport and the delayed recombination of electron-hole pairs due to improved ionic interaction between titanium and carbon.

Understanding the endocrine disruptor and determination of bisphenol A by functional Cu-BTABB-MOF/rGO composite as facile rapid electrochemical sensor: an experimental and DFT investigation

“…This outcome is consistent with the findings of prior research due to rGO bonding, and the typical Cu-BTABB-MOF@rGO peaks were seen in the pattern moved to the right. 31,33…”

Synthesis, characterization and optical properties of in situ ZnFe2O4 functionalized rGO nano hybrids through modified solvothermal approach

“…This high optical band gap is due to the high chemical composition of rGO in overall hybrid sample. The high band gap is attributed to the large defect concentration (Section 3.2) in wet reduction of GO and restacking of graphite sheets during thermal annealing of hybrid sample [51][52][53][54][55].…”

Continuous-Flow Photocatalytic Degradation of Organics Using Modified TiO2 Nanocomposites

“…The PL intensities of the semiconductor materials were affected by the recombination rates of photo-induced electrons (e − ) and holes (h + ). A lower PL intensity indicated an improved charge separation of e − and h + [33]. A lower PL intensity was examined for the modified TNTs in contrast to that of the pristine TNTs in Figure 4a.…”