The preparation of activated carbon from residue of a distillation reactor is an efficient and economical strategy for the utilization of hazardous waste resources.However,the prepared activated carbon is generally powdered,which is difficult to meet the requirements of industrial application.In this work,the activated carbon microspheres were prepared based on the rectification residue activated carbon from the powders,using deionized water as the solvent and polyacrylic acid (PAA),sodium alginate (SA) and Ca²⁺ as the additives.The effects of SA,Ca²⁺ and PAA amount on the structure and mechanical strength of the activated carbon microspheres were investigated.X?ray diffraction,Fourier transform infrared spectroscopy and Raman spectroscopy were used to investigate the shaping mechanism of activated carbon microspheres.The activated carbon microspheres were applied in the tetracycline adsorption,and the maximum adsorption capacity of tetracycline was up to 257.8 mg/g.At the same time,after 9 months of water stability test,the activated carbon microspheres still had good adsorption performance and mechanical strength. This shaping strategy adopted green and economical raw materials,which could effectively solve the problems of powder shaping and poor performance of microspheres,and provide the effective solution for the industrial application of high?performance materials.

The Tb coordination complex [Tb(H₂O)₈]?(L)?2(4,4'?bipy)?3H₂O（complex 1） was synthesized by hydrothermal reaction of sodium 1,3,6?naphthalene trisulfonate (Na₃L) and 4,4'?bipy (4,4'?bipy) with Tb(NO₃)₃?6H₂O. The molecular structure and composition of complex 1 were characterized by single crystal X?ray diffraction, FT?IR spectroscopy, thermogravimetric analysis and elemental analysis. Thermal stability and fluorescence emission properties of complex 1 were also evaluated. The results indicate that Tb³⁺ is eight?coordinated in a tetragonal antiprismatic coordination configuration and coordinates with eight H₂O molecules to form [Tb(H₂O)₈]³⁺.L^3- does not coordinate with metal ion, but only balances the positive charge in the molecule. The formation of hydrogen bonds between the sulfonic acid group of the L^3- and the coordinating H₂O molecule connects the [Tb(H₂O)₈]³⁺ and the L^3- to form a one?dimensional chain structure,which in turn expands into a two?dimensional lamellar structure.The fluorescence emission peaks of complex 1 at 395，453 nm are the characteristic peaks of Na₃L, and the emission peaks at 545,601，641 nm are the characteristic peaks of Tb³⁺.