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A nanowire-like WSe 2 -graphene catalyst was prepared via ultra-sonication and was tested in terms of the photocatalytic reduction of CO 2  into CH 3 OH under irradiation with UV/visible light. The prepared nano-composite was further characterized via XRD, SEM, TEM, Raman and XPS. The photocurrent analysis was further tested for its photocatalytic reduction of CO 2  using gas chromatography (GCMS-QP2010 SE). To further improve the the photo-catalytic efficiency, a sacrificial agent (Na 2 S/Na 2 SO 3 ) was added to the WSe 2 -graphene nanocomposite and was found to improve the photo-catalytic efficiency, with the methanol yield reaching 5.0278 µmol g −1 h −1 . Our present work provides a convenient way to prepare nanomaterials various morphologies that have future applications for environmental remediation.

Preparation of Nanowire like WSe2-Graphene Nanocomposite for Photocatalytic Reduction of CO2 into CH3OH with the Presence of Sacrificial Agents