The XRD patterns were obtained with a Cu-Kα radiation source with a scan rate of 0.05os−1 in the 2θ range of 5°–80°. the XRD measurements were performed using an X-ray diffractom- eter (X'Pert Pro, Panalytical, Holland) operated at 40 kV and 30 mA, with an exposure ...
The diode array detector was set to scan from 190–400 nm. The bandwidth and slit were set at 4 nm; the response time was 2.0 s; and the sampling frequency was 2.5 Hz. To identify the constituents, ultraviolet (UV) absorbance data and retention times of the sample peaks were compared ...