多壁碳纳米管和 pH 值对 YBO3：Eu（5％）的形貌和发光的协同效应

用添加有多壁碳纳米管（MWCNT ）的前驱体溶液，通过水热合成法，在260℃条件下制备了一系列YBO3：Eu3＋样品。当前驱体溶液的pH值从5到10的范围变化时，所制备的样品表现出丰富的形貌，包括鼓状、片状、六面体状、六角状和花状颗粒，这是由碳纳米管表面接枝官能团与前驱体溶液中不同形式 HBO3的协同效应所致。发光测量结果表明p H＝9和10的样品的红／橙（R／O ）比提高了，表现出更好的色纯度，这归因于晶界或颗粒表面的E u3＋具有较低的局部对称性。

Cooperative effects of MWCNT and pH value on the morphology and luminescence of YBO3：Eu(5%)

A series of YBO3 :Eu3+ samples were synthesized by a hydrothermal method at 260 ℃with additive of multi‐walled carbon nano‐tubes (MWCNT ) in the precursor solution .By changing the pH value of the precursor solution from 5 to 10 , samples exhibited rich morphologies including drum‐, flake‐, hexahedron‐, hexagonal‐and flower‐like particles , which were assigned to the cooperative effects of grafted functional groups to the surface of carbon nano‐tubes and different existing forms of HBO3 in the precursor solution . The luminescent measurements indicate that the R/O ratios were enhanced for the samples with pH=9 and 10 ,indicating better color purity , which were attributed to the lower local symmetry of the Eu3+ ions at the grain boundaries or particles’ surface .