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Novel CdIn 2 S 4 nanoparticles@MoS 2 microrods (CNPs@MMRs) heterojunction photocatalysts were synthesized via a facile solvothermal method. The photocatalytic properties of CNPs@MMRs composites for H 2 generation were more prominent than those of the pure CdIn 2 S 4 and MoS 2. Among, CNPs@MMRs-40 exhibited the maximum H 2 evolution efficiency of 539 μmol g−1 h−1. Moreover, CNPs@MMRs-40 possessed excellent photochemical stability during 4 cycles of photocatalytic reactions. CdIn 2 S 4 nanoparticles were intimately decorated on the surface of MoS 2 microrods, which strengthened the absorption of visible light, facilitated the migration and separation of charge carriers. Consequently, photocatalytic efficiency of CNPs@MMRs composite was dramatically enhanced. • A novel CdIn 2 S 4 nanoparticles@MoS 2 microrods (CNPs@MMRs) heterojunction was fabricated. • CNPs@MMRs displayed boosted photocatalytic H 2 evolution performance under visible light. • Charges separation and transport were facilitated at the heterojunction interface. [ABSTRACT FROM AUTHOR]

NiO nanoparticles of 19, 31 and 48 nm average diameter are synthesized by simple calcination of Ni-based coordination polymer precursors with different crystallinity, and are investigated for electrochemical energy storage. Electrochemical properties are firstly characterised by cyclic voltammetry (CV) and galvanostatic charge–discharge measurements; it is found that a specific capacitance of 140 F g −1 is achieved with the 19 nm NiO nanoparticles at 2.5 A g −1 . Larger nanoparticles of 31 and 48 nm diameter exhibit specific capacitances of 114 and 101 F g −1 , respectively, indicating a size-dependent capacitive performance enhanced with decreasing particles size, which is further be confirmed by the results of electrochemical impedance spectroscopy (EIS) and an endurance-life test. [ABSTRACT FROM AUTHOR]