| To meet the urgent needs for seeking energy sources and solving serious environmental problems in the modern industry, great efforts have been invested. Metal–organic coordination polymers, as an interesting class of hybrid materials built from metal ions and organic bridging ligands, have aroused significant research attention because of their specific properties in gas separation, sensors, drug delivery, catalysis, Li-ion batteries, energy storage and so on. In this paper, we studied three types metal–organic coordination polymers by a facile method for the first time and their application as electrode for supercapacitors or as photocatalyst for photocatalysis in the environment. The details of the work are as follows:A novel visible-light-driven g-C3N4/MIL-53（Al） composite photocatalyst was successfully prepared by a facile stirring method at room temperature. The g-C3N4/MIL-53（Al） composites were characterized and their effects on the photocatalytic activities of rhodamine B were investigated. The g-C3N4（wt. 20%）/MIL-53（Al） photocatalyst displayed optimal photocatalytic degradation efficiency, which was about 5 times higher photocatalytic activity than the pure g-C3N4. The improved photocatalytic performance of g-C3N4/MIL-53（Al） photocatalyst was predominantly attributed to the efficient separation of electron–hole pairs and the low charge-transfer resistance. g-C3N4/MIL-53（Al） also exhibited excellent stability and reusability.A facile one-step mechanochemical process from CuCl2·2H2O and thiourea（tu） to fabricate novel [Cu（tu）]Cl·1/2H2 O nanofibers has been observed for the first time,and the nanofibers were used as an electrode material for a supercapacitor. The [Cu（tu）]Cl·1/2H2 O nanofibers with staggered arrangement have lengths longer than 10 μm,and exactly straight nanofibers are 300 nm in width,and the extreme ends of nanofibers are around 30–50 nm in width. The specific capacitance of the [Cu（tu）]Cl·1/2H2 O nanofibers was up to 1145 F·g-1 at scan rate of 5 mV·s-1 and 922 F·g-1 at current density of 10 A·g-1 in a 2 M KOH electrolyte. Simultaneously,the retention was maintained at 72.4% after 500 cycles at 10 A·g-1. This study provides a facile,green,and large-scale method to fabricate novel nano-complexes with as electrode for supercapacitors high supercapacitor activity.Herein we also report the CuBr2（tu）2（tu: thiourea） by a facile method and their application as electrode for supercapacitors is also studied. Adding different amount of ethanol in the process of mechanical polishing for preparation of CuBr2（tu）2 had a great influence on the electrochemical activity. Among these, the as-prepared CuBr2（tu）2-EA5 nanowires exhibited high specific capacitance of 1759 F·g-1 at scan rate of 5 mV·s-1 and 1683 F·g-1 at current density of 10 A·g-1 in a 2 M KOH electrolyte,which was much higher than the other CuBr2（tu）2. |
