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Caption : figure s1. catalytic properties of (uv-vis spectra and conversion) of cuo nps supported on different cns.

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Caption : figure s2. the conversion of 4-np of unsupported cuo nps, cns-supported cuo nps and cns-supported cu nps catalyzed reaction.

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Caption : figure s3. xrd patterns of cns and cns-supported cuo nps.

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Caption : figure s4. the particle size distribution of the sio2-supported cuo nps (a) and al2o3-supported cuo nps (b).

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Caption : figure s5. tem image of go-supported cuo nps.

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Caption : figure s6. sem image of mcc. the inserted image is the particle size distribution.