Yazar "Canpolat, Gurbet" seçeneğine göre listele

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    Conductive polymer-based nanocomposites as powerful sorbents: Design, preparation and extraction applications
    (Taylor & Francis, 2022) Canpolat, Gurbet; Dolak, İbrahim; Keçili, Rüstem; Hussain, Chaudhery Ghazanfar; Amiri, Amirhassan; Hussain, Chaudhery Mustansar
    Conductive polymers as composite materials have been attracted tremendous attention due to their versatile and excellent features such as tunable conductivity, facile synthesis and fabrication, high chemical and thermal stability etc. These characteristics make them versatile and let them being used in numerous fields including microelectronics, optics and biosensors. Throughout the mentioned fields, conductive polymers particularly perform as effective sorbents. Although tremendous efforts have been put into this topic, to the best of our knowledge, a comprehensive up-to-date review on the applications of conductive polymers as efficient sorbents has not been reported. The main objective of this paper is to make a significant contribution to the recent literature toward the synthesis and extraction applications of conductive polymers as efficient sorbents.
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    Development of molecular imprinting-based smart cryogels for selective recognition and separation of serum cytochrome-c as a biochemical indicator
    (Elsevier Sci Ltd, 2021) Canpolat, Gurbet; Dolak, Ibrahim; Onat, Ruken; Kecili, Rustem; Baysal, Zubeyde; Ziyadanogullari, Berrin; Ersoz, Arzu
    The recognition and detection of proteins has an important role in the fields of biochemistry and medicine in term of diagnosis and prognosis. In this study, molecularly imprinted cryogel (MIP) was synthesized for the selective recognition of Cytochrome-c (Cyt-c) by cryopolymerization techniques with the lanthanide-chelate approach using (MAAP)2-Ce(III) as complex functional monomer and Cyt-c as a template protein. The incorporation of template with monomer was characterized by near- infrared (Near-IR) spectroscopy. The binding capacity was optimized in accordance with numerous experimental parameters including pH, initial Cyt-c concentration, flow rate, temperature and ionic strength. As a result, the maximum binding capacity reached to 98.33 mg g-1 in a buffer system with a pH of 6.0. Beside of the excellent reusability performance of prepared MIP, it was successfully applied to separation of template Cyt-c in the existence of hemoglobin (Hb) and myoglobin (Mb) chosen as interfering proteins. The relative selectivity constants of the Cyt-imprinted polymer were determined as 13.84 for the Cyt/Mb pair and 16.05 for the Cyt/Hb pair. Consequently, a high selectivity, simple and cheap strategy for efficient separation of proteins was provided with this novel MIP cryogel.
  • Küçük Resim
    Öğe
    Dicle Nehri'nin belirli istasyonlarında Unio tigridis türü ve su örneklerinde ağır metal birikiminin incelenmesi
    (Bitlis Eren Üniversitesi, 2019) Abay, Çiğdem Kaymak; Canpolat, Gurbet
    Bu çalışmada, Dicle Nehri üzerinde Diyarbakır (I) ve Hasankeyf (II) olarak belirlenen iki istasyondan örneklenenUnio tigridis türünün iç organ kitlesi ve suda (Cu, Cd, Ni, Pb, Zn, Co ) ağır metallerin birikimleri incelenmiştir.İstasyon sularının bazı fiziko-kimyasal parametreleri çalışma alanında, örneklerdeki ağır metal birikim oranı iseICP-OES ile ölçülmüştür. Su örneklerinde iki istasyonda da en yüksek değerler Zn'da, en düşük değerler Cu'datespit edilmiştir. Ni sadece I. istasyonda ölçülebilmişken Co, Cd ve Pb’da değerler ICP-OES'in analiz limitininaltında kalmıştır. Unio tigridis türünde istasyonlar arasındaki farklılık parametrik bir test olan t-test ile yapılmıştır.Unio tigridis’te istasyonlar arasındaki ağır metal birikimine bakıldığında Ni, Cu ve Pb da en yüksek değerler I.istasyonda; Co ve Zn da ise II. istasyon da ölçülmüştür. Cu, Pb ve Zn yoğunluklarında istatistik açısından farkönemli bulunmuştur (p<0.05).
  • Küçük Resim
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    Functionalized magnetic nanoparticles as powerful sorbents and stationary phases for the extraction and chromatographic applications
    (Elsevier SCI LTD., 2021) Keçili, Rüstem; Ghorbani-Bidkorbeh, Fatemeh; Dolak, İbrahim; Canpolat, Gurbet; Karabörk, Muharrem; Hussain, Chaudhery Mustansar
    Materials in nanodimensions such as magnetic nanoparticles exibit fascinating physico-chemical features (i.e. high surface area, very small size, superparamagnetism, active surface which can be successfully functionalized, low toxicity, etc). Because of these superior features, functionalized magnetic nanoparticles received increasing attention for tremendous amount of studies over the last years and a number of successful applications were published. This paper aims to present and highlight the latest progresses in the development of novel functionalized magnetic nanoparticles for the extraction and chromatographic applications. (C) 2021 Elsevier B.V. All rights reserved.
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    Green ion–imprinted polymers
    (Elsevier, 2024) Canpolat, Gurbet; Dolak, İbrahim
    The increasing concern over the environmental impact of traditional chemical synthesis methods has driven the need for environmentally friendly and sustainable alternatives. The principles of green chemistry have been established to guide the design of products and processes that minimize hazardous substances. Molecular imprinting, a rapidly growing field, offers a powerful synergy with green chemistry, allowing for the development of effective and sustainable chemical products for the selective recognizing of both ions and molecules. However, limited research has evaluated the compatibility of ion-imprinted polymers (IIPs) with the principles of green chemistry. This chapter provides a thorough overview of environmentally friendly IIP synthesis alternatives, including the use of greener reagents (dummy templates, functional monomers, porogenic solvent). The chapter highlights the use of computer-based simulation to predict functional monomers, identify binding methods, and assess specificity and demonstrates the use of green approaches in the development of selective IIPs for applications in sensing, separation, and purification. This review aims to offer researchers a fresh outlook on ion imprinting technology and inspire further innovative developments in the field of ion separation and purification. © 2024 Elsevier Inc. All rights are reserved including those for text and data mining AI training and similar technologies.
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    Green nanomaterials in sample pre-treatment processes
    (Elsevier B.V., 2024) Canpolat, Gurbet; Dolak, İbrahim; Keçili, Rüstem; Hussain, Chaudhery Mustansar; 0000-0002-1964-4338; 0000-0002-2095-7614
    Extraction is an important step in sample pre-treatment processes for the efficient removal of an analyte of interest from a complex matrix. Removal of harmful pollutants from contaminated food, environmental, and biological samples is a crucial demand. Green extraction techniques have been developed as greener and more sustainable alternatives to traditional sample preparation methods. These techniques aim to improve the selectivity and sensitivity of analytical methods and simultaneously reducing the harmful side effects of conventional extraction techniques. Green nanomaterials have advanced extraction technologies due to their unique physicochemical features and facile surface functionalization. This chapter presents the synthesis of green nanomaterials and their use in analytical applications, with a special focus on their roles as sorbent materials.
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    Introduction to Green Sample Preparation
    (Royal Soc Chemistry, 2023) Canpolat, Gurbet; Dolak, Ibrahim; Hussain, Chaudhery Ghazanfar; Kecili, Rustem; Hussain, Chaudhery Mustansar
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    Metal chelate based site recognition of ceruloplasmin using molecularly imprinted polymer/cryogel system
    (Taylor & Francis Inc, 2020) Dolak, Ibrahim; Canpolat, Gurbet; Ersoz, Arzu; Say, Ridvan
    In the present study, N-Acetylneuraminic acid (NANA)-imprinted poly(2-hydroxyethyl methacrylate-N-methacryloyl-(L)-histidin-Cu(II)) p(HEMA-(MAH)(2)-Cu(II)) has been synthesized by radical polymerization for site recognition of ceruloplasmin. Prepared imprinted cryogel has been characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). When the binding capacity of NANA-imprinted cryogel (MIP) was compared with non-imprinted cryogel (NIP), it was found that MIP has higher adsorption capacity. The maximum amount of binding NANA has found as 83.20 mgg(-1) at pH 7.0 with flow rate of 1 mLmin(-1) at 25 degrees C. Selectivity experiments for MIP and NIP cryogel have been carried out via the NANA/D-mannose and ceruloplasmin/immunoglobulin G (IgG) pair separately and the relative selectivity coefficient (k') has found as 77.46 and 17.97, respectively. Applicable of the MIP in human serum has been studied and resulted successfully.
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    A novel lanthanide-chelate based molecularly imprinted cryogel for purification of hemoglobin from blood serum: An alternative method for thalassemia diagnosis
    (Elsevier Sci Ltd, 2020) Dolak, Ibrahim; Canpolat, Gurbet; Onat, Ruken; Kecili, Rustem; Baysal, Zubeyde; Ziyadanogullari, Berrin; Ersoz, Arzu
    Purification and analyzing of proteins is an essential means for understanding their function and diseases associated with their lack or defect. In this research, a new lanthanide-chelate based molecularly imprinted polymer (MIP) was synthesized for selective separation of Hemoglobin (Hb) from human serum in the presence of various interference molecules. The Hb-imprinted polymer was prepared by using complex functional monomer N-methacryloylamido antipyrine (MAAP)-Ce(III) and 2-Hydroxyethyl methacrylate (HEMA) in accordance of cryopolymerization techniques. The nonimprinted cryogel (NIP) was also prepared at same polymerization conditions in the absence of template Hb molecule. The effects of pH, initial Hb concentration, flow rate, temperature and ionic strength on the binding capacity of both imprinted and nonimprinted cryogels was investigated. The maximum binding capacity for the MIP column was found to be as 79.41 mg g(-1) dry cryogel, that is four times higher than the NIP column under the optimum conditions (pH 5.0, flow rate: 1.0 mL min(-1), T: 25 degrees C). Moreover, selectivity experiments were performed by using two interference proteins as myoglobin (Mb) and cytochrome c (Cyt-c) and the relative selectivity coefficients (k') for Hb/Mb and Hb/Cyt-c pairs were determined as 36.59 and 37.22, respectively.
  • Küçük Resim
    Öğe
    Oksitli bakır cevherlerinden bakırın değerlendirilmesi
    (2017) Canpolat, Gurbet; Ziyadanoğulları, Recep
    Bu çalışmada Diyarbakır yöresinden temin edilen %2,17 ± 0,11 ve %1,63 ± 0,05 oranında Cu içeren iki ayrı bakır cevheri üzerinde flotasyon ve liçing deneyler yapılmıştır. Çalışmanın ilk aşamasında, her iki cevherde de flotasyon yöntemiyle bakırın zenginleştirilmesi düşünülmüştür. Direkt flotasyon yöntemi ile silisik bakır cevherlerinden bakırın geri kazanımı mümkün olmamıştır. Bu nedenle her iki cevher numunesinin Na2S veH2S ile sülfürlenmesi yoluna gidilmiştir. Flotasyon deneylerinde canlandırıcının, toplayıcının, sülfürlemede kullanılan H2S(g) miktarının ve tanecik boyutunun etkisi incelenmiştir. Flotasyon deneylerinde en iyi sonuç %2,17 oranında Cu içeren 100 mesh boyutundaki 500 g cevher örneğinin 8,54 g H2S(g), %1,63 oranında Cu içeren 100 mesh boyutundaki 500 g cevher örneğinin 9,45 g H2S(g) ile sülfürlenmesi sonucunda yapılan flotasyonundan elde edilmiştir. Bu flotasyonda köpürtücü olarak 0,5 mL (%1) MIBK, toplayıcı olarak 12 mL (%1) Aerophine 3418A ve canlandırıcı olarak 3 mL (5 mg/mL) CuSO4 kullanılmış ve pH 9’da sırasıyla %71,0 ve %74,8 verimle bakır zenginleştirilmiştir. Ayrıca ikinci cevher için (%1,63 Cu), 1,0 M H2SO4 çözelti ortamında cevherin sülfürlenmesiyle elde edilen örneğin flotasyon veriminin %82'ye çıktığı ve konsantredeki bakır oranının da %21 civarında olduğu saptanmıştır. Çalışmanın ikinci aşamasında ise oksitli bakır cevherlerine sülfürik asitle liç işlemi uygulanmış ve bakırın asit çözeltisine yüksek oranda geçmesini sağlamak için çeşitli parametreler incelenmiştir. Bu parametreler asit konsantrasyonu, liç süresi ve sıcaklığı, tanecik boyutu, katı/sıvı oranı, H2O2, NaOH, CaO ve O2 etkisidir. İlk olarak asit derişiminin etkisi incelenmiştir. 0,5 -2,5 M H2SO4 ile yapılan özütleme deneylerinde; gerek çalışmanın ekonomik durumu gerekse elde edilen deney sonuçları dikkate alındığı zaman 1,0 M H2SO4 çözeltisinin daha uygun olduğu belirlenmiştir. Yapılan deneysel çalışmalarda birinci numune için 1,0 M H2SO4 asit ortamında 60 dakikada katı-sıvı oranının 1/1 g/mL, tanecik boyutunun 100 mesh, reaksiyon sıcaklığının da oda sıcaklığı olduğu koşulda bakırın %96'sı çözeltiye alınmıştır. İkinci numunede ise aynı koşullar altında 90 dakika içinde bakırın %86'sı özütlendi. Bütün bunların dışında ikinci cevherin sülfürik asit çözeltisi ile liç işlemi yapılmadan önce 1,0 M NaOH çözeltisi ile etkileştirilmesi ile bakırın %96'sı çözeltiye alındı. HNO3, H2O2 ve O2 gibi yükseltgen kimyasalların ayrı ayrı %1,63 Cu içeren cevherde özütleme verimini artırdığı çıkan deneyler sonucunda elde edilmiştir. Elektroliz işleminde liç çözeltisinden yüksek saflıkta bakır elde edilmiştir. Elektroliz ile bakırı uzaklaştırılan çözeltiden Al2(SO4)3 ve H2SO4 geri kazanımı çalışılmıştır. Anahtar Kelimeler: Flotasyon, Bakır, Liç, Elektroliz
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    Sample preparation with conductive polymers
    (American Chemical Society, 2022) Canpolat, Gurbet; Dolak, İbrahim; Hussain, Chaudhery Ghazanfar; Keçili, Rüstem; Hussain, Chaudhery Mustansar; 0000-0001-5556-6368; 0000-0002-1964-4338
    This chapter presents and highlights the latest progress in the synthesis andapplications of conductive polymers and their nanocomposites as powerfulsorbents in different sample preparation techniques including solid-phaseextraction, solid-phase microextraction, dispersive solid-phase extraction, andmagnetic solid-phase extraction. The review covers the extraction of heavy metalsand organic analytes from various food, environmental, and biological samplessuch as water, urine, and blood. In addition, electrochemical electrodes based onCPs and their composites are also summarized.
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    Smartphone-based optical and electrochemical sensing
    (Elsevier, 2021) Keçili, Rüstem; Ghorbani-Bidkorbeh, Fatemeh; Dolak, İbrahim; Canpolat, Gurbet; Hussain, Chaudhery Mustansar; 0000-0002-2095-7614; 0000-0001-6810-2087; 0000-0002-1964-4338
    Smartphones are emerging as potential replacements for the instrumentation involved in performing various sensing applications such as fast diagnostic tests. This is fueled in part by the gradual increase of billions of smartphone users (~ 3.5 billion users in 2020) even in low-income countries. In this chapter, the latest advancements on the design, development and successful applications of smartphone-based optical (colorimetric, fluorescence, chemiluminescence etc.) and electrochemical sensor platforms was highlighted and overviewed. It starts with the sifnigifance and superior features of the smartphones in the introduction part. In the next sections, optical sensing and electrochemical sensing based on smartphone technology and various important examples from the literature are demonstrated.