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Covalent organic frameworks (COFs) are promising supports for the synthesis of noble metal nanoparticles (NM NPs) with controllable sizes and dispersities. However, it is still challenging to synthesize COFs using green and efficient routes. Herein, COFs (TpMA) were prepared by ball milling, which required less solvent and time. They were then used as a support for the growth of ultrafine Au NPs. Using the COFs as supports, five size-controlled ultrafine Au NPs (2.5 ± 0.55- 4.32 ± 1.39 nm) were synthesized (Au@TpMA). It was found that the Au NPs exhibited remarkable dispersibility owing to the support of TpMA. The reduction of 4-nitrophenol to 4-aminophenol was used as a model reaction to evaluate the performance of the Au@TpMA catalyst, which showed excellent catalytic activity for the reduction of 4-nitrophenol. The Au@TpMA catalyst exhibited good stability and recyclability, and the reduction rate was 95% at the end of six successive experiments. In addition, in the presence of the Au@TpMA catalyst, the maximum pseudo-first-order reaction rate constant of 4-nitrophenol was 0.2379 min

The composition of the deputies in the National People’s Congress of China shows reliance on the principle of formal proportionality based on the national census and substantial representation based on the inclusion of rural areas, minorities and other groups which are a statistically smaller portion of the population. However the quota system based on these principles of representation cannot mitigate against the overrepresentation of government officials and the increasing elitism of the deputies. Yet these issues are nominal compared to the forging of closer political bonds between the representatives and the represented. The author believes that the correlation between the representatives and the represented may be strengthened by moving towards the direct election of the deputies of the National People’s Congress, thereby placing the constitutionality of the National People’s Congress as the highest organ of state sovereignty on a firmer foundation.