Metal porphyrin array modified cellulose terephthalate for sustainable bacterial absorption and sterilization

The emergence of drug-resistant bacteria has induced the development of multifarious methods and materials for sterilization. Nevertheless, the effect of antibacterial materials to environment has still a challenge. To develop a reusable, eco-friendly material for antibacterial and absorption application, a metal porphyrin array modified cellulose terephthalate was fabricated through terephthalate modification of cellulose microfibers (CMFs) extracted from Chlorophytum comosum and interfacial synthesis of sulfide bridged metal porphyrin. The metal porphyrin array (PCN) modified cellulose terephthalate (CMF@PCNCu) exhibited excellent antibacterial capacity to E. coli (Escherichia coli) by interfering with pyruvic acid metabolism at a low-dose of 25 mu g center dot mL(- 1) and even at a smaller dose of 10 mu g center dot mL(- 1) with synergistic photothermal cure. Interestingly, CMF@PCNCu could absorb 6.8 x 10(7) CFU of bacteria per milligram, with good bacterial absorption efficiency after three cycles. These findings highlight the promise of CMF@PCNCu as a sustainable bacterial filter and an antibacterial material for the treatment of pathogenic bacteria polluted water.

Automated summary

The development of various sterilization methods and materials in response to drug-resistant bacteria has faced the challenge of their environmental impact. A reusable and eco-friendly antibacterial material called metal porphyrin array modified cellulose terephthalate (CMF@PCNCu) was created through the modification of cellulose microfibers (CMFs) extracted from Chlorophytum comosum and the synthesis of sulfide bridged metal porphyrin. CMF@PCNCu demonstrated excellent antibacterial capacity against Escherichia coli by interfering with pyruvic acid metabolism, even at low doses of 25 μg/mL and 10 μg/mL with synergistic photothermal cure. Furthermore, CMF@PCNCu displayed high bacterial adsorption efficiency of 6.8×10^7 CFU per milligram after three cycles, making it a promising sustainable bacterial filter and antibacterial material for treating pathogenic bacteria polluted water.