Ta3N5-Pt nonwoven cloth with hierarchical nanopores as efficient and easily recyclable macroscale photocatalysts.
Traditional nanosized photocatalysts usually have high photocatalytic activity but can not be efficiently recycled. Film-shaped photocatalysts on the substrates can be easily recycled, but they have low surface area and/or high production cost. To solve these problems, we report on the design and preparation of efficient and easily recyclable macroscale photocatalysts with nanostructure by using Ta3N5 as a model semiconductor. Ta3N5-Pt nonwoven cloth has been prepared by an electrospinning-calcination-nitridation-wet impregnation method, and it is composed of Ta3N5 fibers with diameter of 150-200 nm and hierarchical pores. Furthermore, these fibers are constructed from Ta3N5 nanoparticles with diameter of ~25 nm which are decorated with Pt nanoparticles with diameter of ~2.5 nm. Importantly, Ta3N5-Pt cloth can be used as an efficient and easily recyclable macroscale photocatalyst with wide visible-light response, for the degradation of methylene blue and parachlorophenol, probably resulting in a very promising application as "photocatalyst dam" for the polluted river.
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
Shijie
S
Li
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
Lisha
L
Zhang
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
Huanli
H
Wang
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
Zhigang
Z
Chen
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
Junqing
J
Hu
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
Kaibing
K
Xu
College of Environmental Science and Engineering, Donghua University, Shanghai 201620, People's Republic of China.
Jianshe
J
Liu
D002384:Catalysis; D052918:Environmental Restoration and Remediation / Q000379:methods*; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry*; D055668:Photochemical Processes; D010777:Photochemistry; D013635:Tantalum / Q000737:chemistry*; D014873:Water Pollutants / Q000737:chemistry
D014873:Water Pollutants; D013635:Tantalum