Table 2 The characteristic bands in FTIR spectra of poplar/bismuth oxide composites

464

Bi–O stretching vibration

879

Cellulose β-glycosidic bond

1022

C–O stretching vibration of primary alcohols, saturated fatty ethers

1240

C–O–C stretching vibration

1427

Benzene ring skeleton structure combined with C-H bond vibration

1456

Methyl C–H bending vibration

1743

C–O stretching vibration of hemicellulose

2929

C–H stretching vibration in the methyl and methylene groups

3421

Hydroxy O–H stretching vibration