- Linkage Effect in the Heterogenization of Cobalt Complexes by Doped Graphene for Electrocatalytic CO2 Reduction
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Immobilization of planar CoII-2,3-naphthalocyanine (NapCo) complexes onto doped graphene resulted in a heterogeneous molecular Co electrocatalyst that was active and selective to reduce CO2 into CO in aqueous solution. A systematic study revealed that graphitic sulfoxide and carboxyl dopants of graphene were the efficient binding sites for the immobilization of NapCo through axial coordination and resulted in active Co sites for CO2 reduction. Compared to carboxyl dopants, the sulfoxide dopants further improved the electron communication between NapCo and graphene, which led to the increase of turnover frequency of the Co sites by about 3 times for CO production with a Faradic efficiency up to 97 %. Pristine NapCo in the absence of a graphene support did not display efficient electron communication with the electrode and thus failed to serve as the electrochemical active site for CO2 reduction under the identical conditions.
- Wang, Jiong,Huang, Xiang,Xi, Shibo,Lee, Jong-Min,Wang, Cheng,Du, Yonghua,Wang, Xin
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- GREEN PIGMENT FOR PLASTICS, AND COLORING COMPOSITION AND MOLDING THAT USE THE SAME
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PROBLEM TO BE SOLVED: To provide: a halogen-free green pigment for plastics that has all of excellent heat resistance, excellent migration resistance and environmental sanitation; and a green coloring composition and a plastic molding that use the pigment. SOLUTION: The green pigment for plastics comprises, an essential component, a naphthalocyanine compound represented by general formula (1). The coloring composition and the molding use the naphthalocyanine compound represented by general formula (1). SELECTED DRAWING: None COPYRIGHT: (C)2021,JPOandINPIT
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Paragraph 0061; 0063; 0074
(2021/01/05)
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- Green pigment and use thereof
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[Problem] weather resistance, heat resistance, stability and with a hygienic environment, after dispersion of colors of green pigment free halogen free, using paint, printing ink or toner and. General formula (1) compounds containing a green pigment [a]. [R1 , R6 , R7 , R12 , R13 , R18 , R19 , R24 Is, a hydrogen atom, R2 - R5 , R8 - R11 , R14 - R17 , R20 - R23 Is, a hydrogen atom, a cyano group, a nitro group, an alkyl group of 1 - 5 carbon atoms, an alkenyl group having a carbon number of 1 - 5, 6 - 10 carbon atoms of the aryl group, - OR25 , - COOR26 , - CONHR27 , - NHCOR28 , - SO2 NHR29 Or - NR30 R31 A, R25 - R31 Is, a hydrogen atom, an alkyl group of 1 - 5 carbon atoms, an alkenyl group having a carbon number of 1 - 5, 6 - 10 carbon atoms or aryl groups, X1 The ligands may have one hydrogen atom or 2 manganese, iron, cobalt, nickel, copper or zinc as shown. ] Figure 1 [drawing]
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Paragraph 0130-0131; 0134
(2020/03/23)
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