화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.37, No.4, 614-622, April, 2020
DOI10.1007/s11814-020-0484-7  Export Citation
Silver and palladium nanoparticle embedded poly(n-isopropylacrylamide-co-2-acrylamido-2-methylpropane sulfonic acid) hybrid microgel catalyst with pH and temperature dependent catalytic activity
Abdul Haleem1, Sidra Bibi Syaal2, Muhammad Ajmal3, Jaweria Ambreen4, Sajid Rauf5, Nasir Ali6, Saz Muhammad2, Afzal Shah2, 7, Muhammad Abid Zia3, and Muhammad Siddiq1, 3, †
  • 1CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
  • 2Department of Chemistry, Quaid-i-Azam University, Islamabad 45320, Pakistan
  • 3Department of Chemistry, University of Education, Attock Campus, Attock 43600, Pakistan
  • 4Department of Chemistry, COMSATS University Islamabad, Parkroad, 45550, Islamabad, Pakistan
  • 5Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, P. R. China
  • 6Zhejiang Province Key Laboratory of Quantum Technology and Devices and Department of Physics, State Key Laboratory for Silicon Materials, Zhejiang University, Hangzhou, 310027, P. R. China
  • 7Department of Chemistry, College of Science University of Bahrain, Sakhir 32038, Bahrain
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Here in, we demonstrate facile fabrication of silver and palladium nanoparticles in dual responsive poly(Nisopropylacrylamide- co-2-Acrylamido-2-methylpropane sulfonic acid) microgel with temperature- and pH-dependent catalytic potential. Palladium-based catalyst showed better catalytic efficiency as compared to silver-based catalyst for degradation of Rhodamine-B and P-Nitrophenol in aqueous medium under the same set of reaction conditions. The responsive nature of the microgel was found to be useful to tune the catalytic activity of the as-prepared catalysts, and reduction rate was enhanced with the pH and temperature elevation of the reaction medium; however, the increasing trend was slowed in the volume phase transition region of the microgel. Under a specific set of reaction conditions, the reduction of Rhodamine-B was as fast as 0.968 and 0.571 min-1 when catalyzed with palladium and silver based catalysts, respectively. The hydrodynamic radius of the particles of microgel support was found to be in the range of 65- 180 nm when pH and temperature of the medium were varied in the range of 2-12 and 25-45, respectively. The estimated diameter of silver and palladium nanoparticles fabricated in the microgel support under the same set of reaction conditions was 9-15 and 7-11 nm, respectively.
Keywords:Microgel;Nanoparticle;Catalysis;P-nitrophenol;Rhodamine-B
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