将辉光放电电解等离子体引发合成的聚乙烯基吡咯烷酮/丙烯酸(PVP/AAc)水凝胶用于吸附化学还原和晶种诱导结合法制备银球、金棒和Aurod@Ag核壳纳米颗粒。采用红外光谱和扫描电镜对凝胶的结构和形貌进行表征,采用紫外-可见分光光度计和透射电子显微镜对核壳纳米颗粒进行表征。结果表明:该凝胶对水相中的金银纳米粒子有很强的吸附能力,尤其对近球形纳米粒子更具有良好的吸附效果。PVP/AAc水凝胶可用于水相中纳米粒子的富集、分离及回收。
The polyvinylpyrrolidone/acrylic acid (PVP/AAc) hydrogel was prepared by glow discharge plasma technology and used to adsorb silver nanospheres,gold nanorods and Aurod@Ag core-shell nanoparticles in aqueous phase.The structure and morphology of the hydrogel were characterized by FT-IR and SEM.The nano-particles were prepared by means of combining chemical reduction with the seed crystal induction,and then characterized by UV-Vis and TEM.The results showed that the PVP/AAc had a strong adsorptive ability and a high absorptive effect for gold and silver nanoparticles in aqueous solution,especially for nanospheres.Therefore,PVP/AAc hydrogel can be used as a promising adsorbent for the separation,removal and recovery of the valuable nanoparticles from aqueous solution.
[1] Benhalima T,Ferfera-Harrar H.Eco-friendly porous carboxymethyl cellulose/dextran sulfate composite beads as reusable and efficient adsorbents of cationic dye methylene blue[J].Biological Macromolecules,2019,164(3):126-141.
[2] 杜琳琳,韦春,龚永洋,等.聚吡咯@剑麻纳米纤维素复合材料对甲基橙的吸附性能研究[J].化工新型材料,2018,46(1):223-225.
[3] 谢标明,朱和康,杨越,等.聚丙烯酸/氧化石墨烯复合水凝胶制备及对亚甲基蓝吸附[J].精细化工,2018,35(1):108-117.
[4] Naseh M V,Barati A,Naseh M R V.Efficient copper removal from wastewater through montmorillonite-supported hydrogel adsorbent[J].Water Environment Research,2019,91(3):332-339.
[5] Song L,Liu F Q,Zhu C Q,et al.Facile one-step fabrication of carboxymethyl cellulose based hydrogel for highly efficient removal of Cr(Ⅵ) under mild acidic condition[J].Chemical Engineering Journal,2019,126(3):641-651.
[6] 赵岗,夏苗苗,魏刚,等.POSS杂化聚丙烯酰胺/PU复合水凝胶的制备及其对Pb2+吸附性能研究[J].功能材料,2018,49(11):11132-11139.
[7] 徐佳,董杰,赵昕,等.溶胶-凝胶法制备聚酰亚胺/SiO2杂化薄膜及性能研究[J],化工新型材料,2019,47(3):71-75.
[8] 岳铭,毕明海,李方,等.载纳米银PVA水凝胶复合材料的制备及其SERS研究[J].光谱学与光谱分析,2018,38(10):179-180.
[9] Christoph S,Kerstin B,Rouven S,et al.Elastic deformations in semi-dilute Ni nanorod/hydrogel composites[J],Journal of Applied Mechanics,2018,DOI:10.1007/s00419-018-1461-z.
[10] Souza J F,Costa G P,Luque R,et al.Polysaccharide-based superporous hydrogel embedded with copper nanoparticles:a green and versatile catalyst for the synthesis of 1,2,3-triazoles[J].Catalysis Science & Technology,2018,DOI:10.1039/c8cy01796d.
[11] 王云普,袁昆,裴小维.聚N-异丙基丙烯酰胺/纳米SiO2复合水凝胶的合成及溶胀性能[J].高分子学报,2005,8(4):584-588.
[12] 姜宇,刘守信,房喻,等.纳米TiO2/聚N-异丙基丙烯酰胺复合水凝胶的合成及其表征[J].化学学报,2007,65(21):2437-2442.
[13] Chen W H,Liao W C,Sohn Y S,et al.Stimuli-responsive nucleic acid-based polyacrylamide hydrogel-coated metal-organic framework nanoparticles for controlled drug release[J].Advanced Functional Materials,2018,82(8):1870053-1870061.
[14] Lu Q F,Yu J,Gao J Z,et al.Glow-discharge electrolysis plasma induced synthesis of polyvinylpyrrolidone/acrylic acid hydrogel and its adsorption properties for heavy-metal ions[J].Plasma Processes and Polymers,2011,8(9):803-814.
[15] Wan Y,Guo Z R,Jiang X L,et al.Quasi-spherical silver nanoparticles:aqueous synthesis and size control by the seed-mediated lee-meisel method[J].Journal of Colloid and Interface Science,2013,394:263-268.
[16] 胡建强,吴继红,任斌,等.纯化学还原方法制备银纳米棒及其SERS活性[J].光散射学报,2002,13(4):226-230.
[17] Sau T K,Murphy C M.Seeded high yield synthesis of short Au nanorods in aqueous solution[J].Langmuir,2004,20(15):6414-6420.
[18] Cho E C,Camargo P H C,Xia Y N.Synthesis and characterization of noble-metal nanostructures containing gold nanorods in the center[J].Advanced Materials,2010,22(6):744-748.
[19] Jin S P,Liu M Z,Chen S L,et al.A drug-loaded gel based on polyelectrolyte complexes of poly (acrylic acid) with poly (vinylpyrrolidone) and chitosan[J].Materials Chemistry & Physics,2010,123(3):463-470.
[20] Wang W B,Wang A Q.Synthesis and swelling properties of pH-sensitive semi-IPN superabsorbent hydrogels based on sodium alginate-g-poly(sodium acrylate) and polyvinylpyrrolidone[J].Carbohydrate Polymers,2010,80(4):1028-1036.
基金资助
甘肃省教育科学“十三五”规划课题(GS[2019]GHB2091);国家自然科学基金(21761030);甘肃省高等学校科研项目(2017A-075)
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