不同溶剂对ZnS纳米材料水热合成的影响
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摘要
以二水合乙酸锌和硫代乙酰胺为原料,分别以水、无水乙醇、乙二胺为溶剂,水热合成了具有不同晶型结构的ZnS纳米材料;通过改变乙二胺的质量分数考察乙二胺加入量对合成纳米材料结构的影响;通过X射线衍射、扫描电镜、X射线能谱等手段对合成的材料进行结构表征。实验结果表明,以水和无水乙醇为溶剂,合成的ZnS纳米材料为立方相的闪锌矿β-ZnS;当以12.5%乙二胺为溶剂时,合成的ZnS纳米材料为六方相的纤锌矿α-ZnS;随着乙二胺浓度提高,生成具有短棒结构的前驱体,实现了具有良好晶型结构的六方相纤锌矿的低温合成。
ZnS nanomaterials with different crystal structure are synthesized by using water, absolute ethanol and ethylenediamine as solvents in water, zinc acetate and thioacetamide. The mass fraction of ethylenediamine is investigated by changing the mass fraction of ethylenediamine. The effect of the amount of ethylenediamine added on the structure of the synthesized nanomaterials is investigated too; the structure of the synthesized materials is characterized by X-ray diffraction, scanning electron microscopy and X-ray energy spectroscopy. The experimental results show that the synthesized ZnS nanomaterials are cubic phase sphalerite β-ZnS with water and absolute ethanol as solvent. When using 12.5 % ethylenediamine as solvent,the synthesized ZnS nanomaterials are hexagonal phase fiber — Zinc ore α-ZnS; With the increase of ethylenediamine concentration, a precursor with a short rod structure is formed, and the low temperature synthesis of hexagonal phase wurtzite with good crystal structure is realized.
ZnS nanomaterials with different crystal structure are synthesized by using water, absolute ethanol and ethylenediamine as solvents in water, zinc acetate and thioacetamide. The mass fraction of ethylenediamine is investigated by changing the mass fraction of ethylenediamine. The effect of the amount of ethylenediamine added on the structure of the synthesized nanomaterials is investigated too; the structure of the synthesized materials is characterized by X-ray diffraction, scanning electron microscopy and X-ray energy spectroscopy. The experimental results show that the synthesized ZnS nanomaterials are cubic phase sphalerite β-ZnS with water and absolute ethanol as solvent. When using 12.5 % ethylenediamine as solvent,the synthesized ZnS nanomaterials are hexagonal phase fiber — Zinc ore α-ZnS; With the increase of ethylenediamine concentration, a precursor with a short rod structure is formed, and the low temperature synthesis of hexagonal phase wurtzite with good crystal structure is realized.
引文
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[2]LI Z J,SHEN W Z,FANG L M,et al.Synthesis and characteristics of silica-modified ZnS nanoparticles by sol-gel-hydrothermal method[J].Journal of Alloys and Compounds,2008,463(1):129-133.
[3]BINDU K R,MARTINEZ A I,VASUDEVAN P,et al.Nanostructured ZnS powders with strong confinement effects prepared by colloidal precipitation method[J].Physica E:Low-dimensional Systems and Nanostructures,2012,46(9):21-24.
[4]刘鑫彤,胡小波,徐现刚.六方相纤锌矿硫化锌微球的制备及性能研究[J].光学学报,2016,36(8):218-224.
[5]马晓品,景志红,丰奇,等.硫化锌微米球的制备及其光催化性能[J].硅酸盐学报,2015,43(1):121-126.
[6]代凯,陈征,朱光平,等.ZnS微米球的合成及光催化性能研究[J].化工新型材料,2013,41(5):63-64,70.
[7]葛明,吴伟,徐斌,等.ZnS纳米球的水热法合成及其光催化性能[J].南开大学学报(自然科学版),2008,41(6):33-38.
[8]刘海瑞,方力宇,贾伟,等.ZnS纳米球的水热法制备及其光催化性能研究[J].无机化学学报,2015,31(3):459-464.
[9]OUYANG X,TSAIT Y,CHEN D H,et al.Ab initio structure study from in-house powder diffraction of a novel ZnS(EN)0.5structure with layered wurtzite ZnS fragment[J].Chemical Communications,2003,9(7):886.
[10]TIAN W,SHEN Q,LI N,et al.Efficient degradation of methylene blue over boron-doped g-C3N4/Zn0.8Cd0.2S photocatalysts under simulated solar irradiation[J].RSC Advances,2016,6(30):25568-25576.
[11]ZHANG J,QI L F,RAN J R,et al.Ternary NiS/ZnxCd1-xS/Reduced Graphene Oxide Nanocomposites for Enhanced Solar Photocatalytic H2Production Activity[J].Advanced Energy Materials,2014,4(10):1301925.