为了寻找新的发光材料基质,我们研究了BiOBr和La_(1-x)Bi_xOBr体系的合成方法,用晶格参数测定法确定了该体系固相线以下的相区。 一、溴氧化铋的制备 Sillèn曾用BiBr_3溶液水解法制得纯净的BiOBr。用Br_2水和BiI_3一起加热也可以得到BiOBr。在真空中和200℃下使CBr_4与Bi_2O_3反应,所得到的是BiOBr和BiBr_3的混合物。利用BiOBr在氢溴酸中的浓溶液,经过一层稀的氢溴 In order to find a new luminescent material matrix, we studied the synthesis of BiOBr and La_ (1-x) Bi_xOBr system, and determined the phase region below the solidus of the system by lattice parameter measurement. First, the preparation of bismuth oxybromide Sillèn BiBr_3 solution has been used to prepare pure BiOBr hydrolysis. BiOBr can also be obtained by heating with Br 2 water and BiI 3. Reaction of CBr_4 with Bi_2O_3 in vacuum at 200 ° C resulted in a mixture of BiOBr and BiBr_3. Using a concentrated solution of BiOBr in hydrobromic acid, a thin layer of hydrogen bromide is passed