| abstract |
Provided are titania fibers having excellent balance of BET specific surface area and crystallite size and capable of expressing sufficient photocatalytic activity while having mechanical strength, and a method for producing the titania fibers. As a fiber-forming composition for forming titania fibers, a fiber aggregate is produced from the composition by an electrospinning method using a composition containing titanium oxide particles, and fired, so that the average fiber diameter is 50 nm or more and 1000 nm or less, A titania fiber having a crystallite size of 50 nm or more and 200 nm or less and a BET specific surface area of 3 m 2 / g or more and 100 m 2 / g or less when a reflection method using a goniometer is adopted.n n n n Titania fiber |