Cellulose/GO/Pd-Pt Nanocomposite Monolith for Continuous-Flow Catalytic Remediation of Cr(VI)
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초록
내용
In this study, we developed a highly efficient and reusable continuous-flow reactor for Cr(VI) remediation by combining the advantageous features of cellulose monoliths with suitable reinforcement techniques. We fabricated a porous monolithic cellulose/graphene oxide (GO) composite with a continuous three-dimensional skeletal framework using the thermally induced phase separation technique. Pd–Pt bimetallic nanocrystals through a galvanic replacement reaction. The cellulose/GO/Pd-Pt nanocomposite monolith exhibited outstanding performance with a maximum conversion of 98% in a continuous-flow reaction for Cr(VI) reduction. Moreover, the nanocomposite monolith-based heterogeneous catalysts exhibited remarkable long-term stability, retaining its catalytic activity even after extended periods of storage in the dried state. These results highlight the potential of cellulose-based composite monoliths as versatile and robust support materials for heterogeneous catalysis.