Efficient photocatalysis of organic dyes under simulated sunlight irradiation by a novel magnetic CuFe2O4@porphyrin nanofiber hybrid material fabricated via self-assembly

Self-Assembly of Porphyrin Nanofibers on ZnO Nanoparticles for the Enhanced Photocatalytic Performance for Organic Dye Degradation

“…This Soret absorption peak is attributed to the a 1u (π) → e* g (π) transition in the porphyrin core. 41 In addition, the UV–vis spectrum of the monomeric TCPP molecule contains four Q bands in the range of 500–700 nm, which result from the a 2u (π) → e* g (π) transitions in the porphyrin core. 42 , 43 Interestingly, the Soret absorption band of TCPP appeared at approximately 407 nm in the UV–vis spectrum of ZnO/TCPP and was broadened.…”

“… 39 Recently, well-defined porphyrin nanostructures were fabricated via self-assembly with structural and photocatalytic properties similar to those of chlorophyll for photocatalysis applications. 30 , 34 , 36 , 41 The band gap energies exhibited by the ZnO/TCPP composite indicate that it can harvest photons with energy in UV and visible regions. In this study, the photocatalytic activities of the ZnO nanoparticles, TCPP nanofibers, and ZnO/TCPP composite were investigated for RhB removal under simulated sunlight irradiation.…”

“…When the hybrid material is irradiated with simulated sunlight, the electrons in the photocatalyst absorb the photons with energy in the UV and visible regions and jump from the valence band to the conduction band, thereby leaving holes in the valence band. 41 This generates electron/hole pairs in the photocatalyst, which tend to move between the ZnO/TCPP interface. The generated electrons move from the conduction band of the TCPP nanofibers to that of the ZnO; however, the holes tend to move in the opposite pathway, they move from the valence band of ZnO to that of TCPP; as a result, the charge separation of electrons and holes is significantly improved.…”

Assessment of catalytic and antibacterial activity of biocompatible agar supported ZnS/CuFe2O4 magnetic nanotubes

“…Among ferrites, copper ferrite plays a more prominent role in all these fields due to its unique Jahn–Teller effect of (Cu 2+ ) ion 14 , 15 , moderate magnetization, and high coercivity 16 . In addition to the aforementioned applications, CuFe 2 O 4 is also used as semiconductors 17 , catalyst 18 , 19 , photocatalyst 20 , and transition metal absorbent. Since antibacterial activity for both ZnS 21 – 23 and CuFe 2 O 4 16 , 24 , 25 against gram negative and gram positive bacteria have been reported in previous articles, it is expected that a composite consisting of these two will have acceptable antibacterial activity.…”

Study on the synthesis of porphyrin-modified copper ferrite as photocatalyst for treatment of MB organic dye in aqueous media

“…thuốc nhuộm MB khá độc, tan tốt trong nước cũng như các dung môi như methanol, ethanol. Thuốc nhuộm dệt cũng hoạt động như các tác nhân độc hại, gây đột biến và gây ung thư[1], khi tồn tại dưới dạng các chất gây ô nhiễm môi trường ngưng tụ sinh học.Một số phương pháp đã được sử dụng để xử lý nước thải dệt nhuộm nói riêng và nước thải nói chung.Trong các nghiên cứu trước, chúng tôi đã chế tạo thành công vật liệu copper ferrite@porphyrin nanofiber và ứng dụng làm xúc tác quang cho xử lý phẩm màu rohdamine[4]. Trong nghiên cứu này nhóm nghiên cứu tiếp tục đánh giá khả năng xúc tác quang của vật liệu copper ferrite biến tính porphyrin cho xử lý methyl blue trong môi trường nước Thực nghiệm và phương pháp nghiên cứu Phương pháp trung hòa axit-bazơ có sự hỗ trợ của chất hoạt động bề mặt đã được sử dụng chế tạo vật liệu lai sợi nano CuFe 2 O 4 /TCPP.…”