The effect of atrazine concentration on galvanic cell potential based on molecularly imprinted polymers (MIPS) and aluminium as contact electrode

Abstract

Potentiometric sensors had been fabricated by employing the Atrazine MIPs as the working electrode; Aluminum (Al) as the electrode potential. A glass with diameter 3 mm and 6 mm as the vessels for chemical solution. The sensor target was a test solution of Atrazine with different concentration. The potential measured between the electrode contact and reference were increase by the rise of Atrazin concentration. The graph of potential cell versus logarithm of concentration revealed two slopes for Al contact. It implied that the potentiometric sensor was sensitive in the range of concentration 0.44-0.55 mM. Reevaluation of the sensor was conducted 3 months later by following the same procedure. Still, the graph showed a consistent curve that prove sensor stability.

Synthesis of Ion Imprinted Polymers (IIPs) Adsorbent Materials Using Fe(III) Leaching Process with Variation of Hydrochloric Acid Solvent Concentration and Heat Treatment

“…This led to the dissolution and reduction of the ions from polymer matrix, as shown by the fading of the sample color (Novianty et al, 2023) . When Fe(III) ions were lifted from polymer matrix, templates or pores with shapes, properties, and characteristics, which were almost identical to the physical and chemical structure of the materials removed were formed (Royani and Abdullah, 2019) . With these characteristics, Fe(III)-IIPs materials exhibited excellent selectivity towards Fe(III) metal ions, and upon encountering these active substances again, IIPs immediately recognized and bound the active substances in the template,…”

“…(5) D represents the crystal size of Fe(III)-IIPs on a nanometer scale. The Scherrer constant (k) in the formula above took into account the particle shape and was generally considered to be 0.9 (Royani and Abdullah, 2019) , 𝜆 is wavelength, and B or FWHM is the full width at half maximum (Ullah et al, 2020) . The crystal size distribution of unleached Fe(III)-IIPs or Fe(III) polymer with polymer material that had undergone washing with several parameters is presented in Table 2.…”

Analisis Molecullary Imprinted Polymer (MIP) Nano Melamin (C3H6N6) Sebagai Material Sensor

“…Waktu pemaparan berkisar antara 14 hingga 24 jam [5][6] [7][8] [9]. Namun, kelemahan dari teknik aliran nitrogen ini adalah sangat mahal dan memakan waktu [10]. Proses lain yang dapat digunakan dalam pembuatan MIP melalui proses coolingheating [11].…”

Optimasi Ukuran dan Jumlah Pori yang Terbentuk Pada Molacularly Imprinted Polymer (MIP) Nano Karbaril (C12H11NO2)

“…Metode yang umumnya digunakan dalam sistesis MIP yaitu dengan mengalirkan nitrogen kemudian diberi sinar ultraviolet [8,10]. Namun, kelemahan teknik tersebut adalah membutuhkan biaya yang cukup mahal dan waktu yang lama [11].…”

“…Selanjutnya, pembentukan pori dilakukan dengan cara penghapusan template karbaril (ekstraksi) dari polimer. Pori tersebut melengkapi molekul target secara spesifik dalam hal bentuk, ukuran, struktur, dan kelompok-kelompok fungsional yang sama [11,15]. Selanjutnya, keberhasilan dalam pembuatan MIP dapat di uji dengan menggunakan FTIR untuk mengetahui gugus fungsi dan persentase transmitasi dari sampel, XRD untuk melihat ukuran kristal dari polimer, dan SEM untuk mengetahui data permukaan sampel dan analisis jumlah serta ukuran pori yang terbentuk pada MIP nano karbaril.…”