Facet-dependent photocatalytic properties are intrinsic characteristics of several inorganic semiconductors. Herein, faceted crystal engineering and 3D-printing technology have been combined for the fabrication of the first organic-inorganic 3D-printed visible-light photocatalyst prototypes. As a proof-of-concept, two facet crystal nanoarchitectonics have been devised by in situ synthesizing Ag3PO4nanoarchitectures with tunable─amorphous and faceted─shapes upon 3D-printed graphene/polylactic acid (G/PLA) nanocomposite scaffolds through a green wet-chemistry approach. The facet-dependent photoactivity performance of the resulting 3D-printed photocatalysts under visible light irradiation has been explored toward (i) the photodegradation of environmental pollutants (i.e., rhodamine B) and (ii) the indirect photoelectrochemical oxygen evolution from water splitting. Overall, the 3D-printed G/PLA carrying facet-Ag3PO4nanoarchitectures has displayed enhanced photocatalytic and photoelectrochemical activity when compared to its amorphous-Ag3PO4counterparts. Accordingly, the integration of inorganic semiconductors across low-cost 3D-printed G/PLA scaffolds under crystallization control represents a potential nanotechnological strategy toward the next generation of highly efficient organic-inorganic 3D-printed solar-light-driven photocatalysts, which might be mass-produced in a sustainable way, anywhere at any time.
Bibliographical noteFunding Information:
J.M. acknowledges the financial support from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement no. 101027867. M.P. acknowledges the financial support of the Grant Agency of the Czech Republic by the GACR EXPRO 19-26896X project. Authors acknowledge CzechNanoLab Research Infrastructure supported by LM2018110 MEYS CR 2020–2022.
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All Science Journal Classification (ASJC) codes
- Chemical Engineering (miscellaneous)
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
- Materials Chemistry