Infrared Spectra Characteristics of Zinc Hydroxide and Zinc Oxide

It is generally acknowledged that the infrared spectra of zinc hydroxide and zinc oxide are extremely simple,and the main functional groups of zinc hydroxide are hydroxyl strentch cibration absorption peak and the fingerprint region Zn-O bond bends vibration peak,and zinc oxide only has the fingerprint region of zinc oxide Zn-O bond bends vibration absorption,but in fact it's not true. The zinc hydroxide crystal was prepared with zinc nitrate hexahydrate as raw material in high concentration of NaOH aqueous solution,and the product was dried to form zinc oxide in low tempereture,and their infrared spectra were investigated.There were two peaks in zinc hydroxide apd -OH absorption peak in zinc oxide,and the causes of formation were investigated.