Ni_(12)P_5和Ni_2P微纳米材料的水热合成、表征及其光催化性能研究  

Hydrothermal synthesis and characterization of Ni_2P and Ni_(12)P_5 micro/nano materials and its photocatalytic degradation ability

作　　者：鄢景森[1] 鄂永胜[1] 吕晓姝[1] 曹飞飞[1] 

机构地区：[1]辽宁科技学院生物医药与化学工程学院,辽宁本溪117004

出　　处：《应用化工》2017年第1期120-122,126,共4页Applied Chemical Industry

基　　金：辽宁省教育厅科技研究一般项目(L2014507);辽宁科技学院科学研究资金(RXYJ2015001)

摘　　要：以无毒的红磷代替白磷作为磷源,以硝酸镍为镍源,通过改变磷镍比和水热温度,利用水热合成法成功实现了Ni_(12)P_5和Ni_2P的可控合成,采用X射线衍射(XRD)和透射电镜(TEM)对合成产物的晶相结构和形貌进行了表征。以亚甲基蓝为染料废水模型,对合成的磷化镍的光催化降解性能进行了测定。结果表明,磷镍比增加有利于四方相结构的Ni_(12)P_5向六方相结构的Ni_2P转变,温度升高则有利于Ni_2P向Ni_(12)P_5转变。在365 nm紫外光照射下,所得的Ni_(12)P_5和Ni_2P微纳米材料对亚甲基蓝表现了较好的光催化降解性能。Ni（12）P5and Ni2P catalysts were successfully synthetized by using non-toxic red phosphorus instead of white phosphorus,nickel nitrate as raw materials,water as solvent at a low temperature by hydrothermal method. The influence of several factors in the process of synthesis was studied,including molar ratio of P/Ni and hydrothermal reaction temperature. The results showed that with initial P/Ni mole increment,pure tetragonal nickel phosphide（ Ni（12）P5） could be transformed into pure hexagonal nickel phosphide（ Ni2P）,while with temperature increment,Ni2P could be gradually transformed into Ni（12）P5. X-ray powder diffraction（ XRD） and transmission electron microscopy（ TEM） were used to characterized the phase and morphology of Ni（12）P5 and Ni2P. Furthermore,the as-prepared products exhibited better photocatalytic degradation abilities for methylene blue under 365 nm ultraviolet irradiation.

关 键 词：磷化镍 水热合成 光催化降解 有机染料 

分 类 号：TQ032-41[化学工程] TQ050.421