An electrospinning technique was utilized to add graphene quantum dots into a nanofibrous polymer membrane for dual-purpose fluorescent and electrochemical biosensors.

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We report a low-cost and efficient catalytic system, involving in situ generated ligand-free Ni NPs, methanol and sodium borohydride, for the semihydrogenation of alkynes under ambient conditions. This catalytic system exhibits remarkably high activity, satisfactory cis-selectivity for internal alkynes, good stability and general applicability.