A solvothermal process was developed for the preparation of cauliflower-like Bi2S3 from N,N-dimethylformamide （DMF） solution of bismuth nitrate [Bi（NO3）3.5H2O] and thioacetamide （TAA） with 2-undecyl-1-dithioureido-ethyl-imidazoline （SUDEI） as the morphology-controlling agent. The obtained Bi2S3 products were characterized by transmission electron microscopy （TEM）, scanning electron microscopy （SEM）, and X-ray diffraction （XRD）, etc. The sensing properties of Bi2S3 with different morphologies were evaluated by the electrochemical analysis of dopamine （DA） and ascorbic acid （AA） coexisting solution. The results showed that cauliflower-like Bi2S3 showed a better resolving ability than rod-like Bi2S3 for the simultaneous determination of DA and AA,
Qing Xiang WangFeng GaoShun Xing LiWen WengZheng Shui Hu
A novel one-dimensional chain-like coordination polymer constructed from 3-nitrobenzene- 1,2-dicarboxylic acid, [Cd2（C8H3NO6）2（H2O）4]n·2nH2O, has been synthesized and its structure was determined by X-ray crystallography method. The crystal belongs to monoclinic, space group P21/c with a = 6.1252（8）, b = 20.706（3）, c = 8.8067（11）A, β = 95.608（2）^o, V = 1111.6（2）A^3, Mr = 751.12, De= 2.244 g/cm^3, F（000） = 736,μ = 2.011 mm^-1, Z= 2, the final R = 0.0262 and wR = 0.0692 for 2338 observed reflections with I 〉 2a（I）. The structure of the title compound presents a 1-D chain-like structure constructed by dimer units, [Cd2（C8H3NO6）2（H2O）4]n, through two carboxylate oxygen atoms. The fluorescence of the title compound has been also discussed in this paper.
