Sol-Gel Biotemplating Route with Cellulose Nanocrystals to Design Photocatalyst Boosting the Hydrogen Generation
Preprints are manuscripts made publicly available before they have been submitted for formal peer review and publication. They might contain new research findings or data. Preprints can be a draft or final version of an author's research but must not have been accepted for publication at the time of submission.
harvesting capability and charge carriers lifetime play critical roles in
determining the photoefficency of photocatalyst. Herein, a one-pot method is
proposed to design mesostructured TiO2 materials by taking advantage
of the ability of cellulose nanocrystals (CNC) to self-assemble into chiral
nematic structures during solvent evaporation. After the xerogel formation, the
as-obtained CNC/TiO2 hybrid films exhibit a chiral nematic structure
and tunable Bragg peak reflection, generating lamellar TiO2
mesostructure after the biotemplate removal by calcination. More prominently,
this straightforward method can be extended to couple TiO2 with
other metal oxides, improving the light-harvesting and charge carriers
separation of these photocatalysts, in particular for boosting hydrogen
generation. This foolproof approach opens new doors for the development of
nanostructured materials for solar energy conversion and catalysis.