本研究以銀奈米顆粒插層於氧化石墨烯的片層之間，以達成以下兩目的:第一，調控氧化石墨烯的層間距；第二，藉由協同效應，使氧化石墨烯與銀奈米顆粒的抗菌特性被進一步的強化。本研究製備6種不同pH值(1-11)的Ag@GO 水溶液，並且經由壓力輔助裝置將溶液之中的Ag@GO奈米複合物沉積於聚醯胺基材膜上，並分別將其命名為Ag@GOpH1、Ag@GOpH3、Ag@GOpH5、Ag@GOpH7、Ag@GOpH9、Ag@GOpH11奈米複合薄膜，並且探討溶液pH值對於奈米顆粒的尺寸與數量的影響。
雷射奈米粒徑電位分析儀、紫外光-可見光/近紅外光分析儀來分析銀奈米粒子對於氧化石墨烯分散液的影響。掃描式電子顯微鏡、微米水接觸角、拉曼光譜儀，進行薄膜表面型態與物理結構分析。全反射傅立葉轉換紅外光譜儀、X射線光電子能譜儀進行薄膜的化學特性分析，並且討論銀離子與氧化石墨烯的化學反應機制。
在滲透蒸發系統(進料異丙醇:水=70:30)的測試下，Ag@GOpH11的通量能夠達到2756.86(g/m2 h)，比純GO薄膜的通量還要高出28.36%；在異丙醇的阻擋率方面，則能夠維持在97.2%以上，與純GO相比，僅損失1.170%。
在抗菌效能的測試之中Ag@GOpH1、Ag@GOpH3、Ag@GOpH9、Ag@GOpH11針對大腸桿菌的抑菌率皆可到達99.99%，明顯高於純GO薄膜的89.3%，證明Ag@GO奈米複合材料的卓越抗菌性。
結合滲透蒸發與抗菌的結果與各項鑑定，將有助於解釋奈米顆粒生成的機制，以及插層對於氧化石墨烯薄膜物化性質的影響。

In this work, silver nanoparticles are suscessfully intercalated between graphene oxide nanosheets to achieve two purposes: First, to tune the d-spacing of graphene oxide nanosheets; Second, to further enhance the antibacterial properties of graphene oxide and silver nanoparticles through synergistic effect. In this work, six Ag@GO aqueous solutions with different pH values (ranging from 1-11) were prepared, and the solutions were deposited on a polyamide substrate through pressure-assisted filtration method. The resulting nanocomposite membranes were named Ag@GOpH1, Ag@GOpH3, Ag@GOpH5, Ag@GOpH7, Ag@GOpH9, Ag@GOpH11, and the influence of the solution’s pH value on the size and amount of nanoparticles were discussed.
Zetasizer, Ultraviolet–visible spectroscopy were performed for the analysis of the aqueous solution. Scanning electron microscope, micro water contact angle, and Raman spectrometer were used for the analysis of the surface morphology and physical structure of the membranes. Attenuated total reflection Fourier transform infrared spectrometer and X-ray photoelectron spectrometer were performed to analyze the chemical properties of the membrane, and the reduction mechanism and intercalation mechanism of silver nanoparticles were further discussed.
Under the pervaporation testing system (feed isopropanol:water = 70:30). In terms of flux, Ag@GOpH11 can reach up to 2756.86 (g/m2 h), which is higher by 28.36% than the flux of pristine GO membrane; in terms of rejection, it can be maintained above 97.2%, which is only 1.170% lower than pristine GO membrane.
In the antibacterial test, Ag@GOpH1, Ag@GOpH3, Ag@GOpH9, Ag@GOpH11 can reach up to 99.99% inhibition rate against Escherichia coli, which is significantly higher than that of pristine GO membrane with 89.3%, which proves the enhanced antibacterial properties of Ag@GO nanocomposites.
The results of pervaporation test, antibacterial test, and various characterization techniques will help to explain the mechanism of nanoparticle generation and the effect of its intercalation on the physical and chemical properties of graphene oxide membranes.

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