A powder X-ray diffraction (XRD, D/max-2400, Rigaku, Japan) of maize straws were examined with Cu Ka radiation (k = 1.451 Å) as an incident beam at 40 kV and 100 mA
A powder X-ray diffraction (XRD, D/max-2400, Rigaku, Japan) ofmaize straws were examined with Cu Ka radiation (k = 1.451 Å) asan incident beam at 40 kV and 100 mA