Preparation of Pd/PANI/ITO composite electrode and its degradation of tetracycline wastewater

Abstract

In order to treat antibiotics organic pollutants in the water environment, the Pd/PANI/ITO composite electrode was prepared by the galvanostatic electrodeposition method in this paper. The surface morphology and electrocatalytic activity of the electrode were analyzed and tested. Using the degradation rate of electrocatalytic tetracycline wastewater as an indicator, the optimal parameter conditions for preparing the composite electrode were screened out: the optimal deposition current of PANI was 2 mA, and the deposition time was 10 min. The optimal deposition current for Pd is 2 mA, and the deposition time is 10 min. The optimal current for the degradation of tetracycline wastewater is 10 mA, and the relationship between the degradation current and the degradation time conforms to the pseudo-first-order reaction kinetics. The existence of ÁOH in the degradation process of tetracycline was verified by the coumarin fluorescence detection technology. Finally, the degradation process of tetracycline wastewater is analyzed. The results show that the intermediate products produced during the degradation of tetracycline are gradually cleavage of tetracycline molecules, and they are eventually converted into CO 2 and H 2 O.

Adsorption and photocatalytic degradation of tetracycline from water by kappa‐carrageenan and iron oxide nanoparticle‐filled poly (acrylonitrile‐co‐N‐vinyl pyrrolidone) composite gel

“…[ 6 ] These inorganic photocatalysts have several limitations such as the requirement of expensive centrifugation and drying for recovery of the photocatalysts after use. To overcome these limitations activated carbon, [ 10 ] glass [ 11 ] or polymeric materials [ 12 ] are used as support materials. Polymer hydrogel can act as an efficient support material since it can absorb large amounts of water into the network to maintain the moist environment during photocatalysis.…”

Rational design of in‐situ‐modified resorcinol formaldehyde aerogels for removing chlortetracycline antibiotics from aqueous solutions

“…Numerous investigations have been done on the removal of antibiotics from aqueous solutions. [16][17][18][19][20][21] TC removal techniques mainly consist of biological (still in experimental stage for wastewater treatment) and physico-chemical treatment technologies. On the other hand, current standard physicochemical methods for wastewater treatment of TCs include coagulation, photocatalytic oxidation, ozone oxidation, and adsorption.…”