Nghiên cứu tổng hợp xanh hóa nano bạc từ cao chiết cây Cúc leo (Mikania micrantha Kunth)=Environmentally friendly synthesis of silver nanoparticles using Mikania micrantha Kunth extract

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Tác giả: Quốc Trung Nguyễn

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Khoa học và Công nghệ Việt Nam, 2025

Mô tả vật lý: tr.67-74

Bộ sưu tập: Metadata

ID: 478438

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In this study, the synthesis of silver nanoparticles using a reduction method that incorporated Mikania micrantha Kunth extract as a natural reducing agent, alongside polyvinylpyrrolidone (PVP) for stabilisation purposes. Key factors that influence the size and morphology of the nanoparticles, including the concentrations of silver nitrate, extract concentration, and reaction time, were investigated with the goal of producing Ag nanoparticles with the desired shape and size. Optimal conditions for synthesising the silver nanoparticles from Mikania micrantha Kunth extract include using an AgNO3 concentration of 0.030 M, an extract concentration of 2.50 mg/ml, and a reaction time of 90 minutes at room temperature. The results obtained from ultraviolet-visible spectroscopy (UV-Vis), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HR-TEM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), dynamic light scattering (DLS), and zeta potential analysis, silver nanoparticles were successfully produced with an average size of about 47.1 nm. The silver nanoparticles synthesised from Mikania micrantha Kunth are environmentally friendly and have promising applications for future developments in nanotechnologyTrong nghiên cứu này, hạt nano bạc được tổng hợp xanh hóa với cao chiết cây Cúc leo (Mikania micrantha Kunth) có vai trò là tác nhân khử tiền chất bạc nitrate và polyvinyl pyrrolidone (PVP) là chất ổn định. Các yếu tố ảnh hưởng đến sự hình thành và phát triển của hạt nano bao gồm nồng độ bạc nitrate, nồng độ cao chiết và thời gian phản ứng được khảo sát với mục tiêu tạo ra hạt nano bạc có hình dạng và kích thước mong muốn. Điều kiện thích hợp để tổng hợp nano bạc từ cao chiết cây Cúc leo bao gồm: nồng độ AgNO3 0,030 M, nồng độ cao chiết là 2,50 mg/ml, thời gian phản ứng là 90 phút tại nhiệt độ phòng. Thông qua kết quả quang phổ - tử ngoại khả kiến (UV-Vis), kính hiển vi điện tử truyền qua (TEM), kính hiển vi điện tử truyền qua phân giải cao (HR-TEM), kính hiển vi điện tử quét (SEM), phổ phân tán năng lượng tia X (EDS), tán xạ ánh sáng động (DLS) và thế zeta cho thấy đã tổng hợp thành công hạt nano bạc có dạng cầu, kích thước trung bình khoảng 47,1 nm. Nano bạc được tổng hợp từ cao chiết cây Cúc leo thân thiện với môi trường hứa hẹn sẽ mang lại nhiều tiềm năng ứng dụng trong tương lai.

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