Use of TiO2@PLDOPA@Fe3O4 Nanocomposite for Lead Adsorption and Effect of PLDOPA Film Thickness on Adsorption

Hayrunnisa Mazlumoğlu

Article Details

Use of TiO2@PLDOPA@Fe3O4 Nanocomposite for Lead Adsorption and Effect of PLDOPA Film Thickness on Adsorption

Authors:

Hayrunnisa Mazlumoğlu

Publisher:

Giresun University

Main Topics:

Atıksu Arıtma Süreçleri

Journal:

Karadeniz Fen Bilimleri Dergisi Vol.15 Issue 3, pp.1027-1045

Document Type:

Article

Publication Date:

9/2025

Document Language:

Turkish

Document ID (Org No.):

2001358294

pISSN:

2564-7377

Keywords:

Abstract:

 Lead Pb is a heavy metal that has serious negative effects on the environment and living organisms, even in trace amounts. Pb II ions in wastewater should be reduced to a certain standard value before discharge to prevent these problems. Adsorption is a commonly used method for heavy metal removal due to its ease of use, low operating cost, high selectivity, and low waste production. The selection of an adsorbent plays a crucial role in adsorption, and nano-sized adsorbents, which have many advantages over traditional absorbents, have recently received considerable attention. This study investigated TiO2PLDOPAFe3O4 nanocomposite for Pb II adsorption and the effect of PLDOPA film thickness on adsorption. Synthesized nanocomposite was characterized by XRD, TEM, and EDX analyses before and after adsorption. Nanocomposites were separated from samples taken at certain times during adsorption by a magnetic field and Pb II was determined in the remaining solution through ICP-MS. The equilibrium value of adsorption was reached within three hours. TiO2PLDOPAFe3O4-2 nanocomposite with PLDOPA film thickness obtained through three hours of polymerization achieved the highest removal rate 97 and adsorption capacity 705 mgg. This can be attributed to adsorption primarily occurring on Fe3O4 nanoparticles deposited on the film surface. In agreement with characterization comments, experimental results show that TiO2PLDOPAFe3O4 nanocomposite can effectively remove Pb II from wastewater.

 Lead Pb is a heavy metal that has serious negative effects on the environment and living organisms, even in trace amounts. Pb II ions in wastewater should be reduced to a certain standard value before discharge to prevent these problems. Adsorption is a commonly used method for heavy metal removal due to its ease of use, low operating cost, high selectivity, and low waste production. The selection of an adsorbent plays a crucial role in adsorption, and nano-sized adsorbents, which have many advantages over traditional absorbents, have recently received considerable attention. This study investigated TiO2PLDOPAFe3O4 nanocomposite for Pb II adsorption and the effect of PLDOPA film thickness on adsorption. Synthesized nanocomposite was characterized by XRD, TEM, and EDX analyses before and after adsorption. Nanocomposites were separated from samples taken at certain times during adsorption by a magnetic field and Pb II was determined in the remaining solution through ICP-MS. The equilibrium value of adsorption was reached within three hours. TiO2PLDOPAFe3O4-2 nanocomposite with PLDOPA film thickness obtained through three hours of polymerization achieved the highest removal rate 97 and adsorption capacity 705 mgg. This can be attributed to adsorption primarily occurring on Fe3O4 nanoparticles deposited on the film surface. In agreement with characterization comments, experimental results show that TiO2PLDOPAFe3O4 nanocomposite can effectively remove Pb II from wastewater.

 Lead Pb is a heavy metal that has serious negative effects on the environment and living organisms, even in trace amounts. Pb II ions in wastewater should be reduced to a certain standard value before discharge to prevent these problems. Adsorption is a commonly used method for heavy metal removal due to its ease of use, low operating cost, high selectivity, and low waste production. The selection of an adsorbent plays a crucial role in adsorption, and nano-sized adsorbents, which have many advantages over traditional absorbents, have recently received considerable attention. This study investigated TiO2PLDOPAFe3O4 nanocomposite for Pb II adsorption and the effect of PLDOPA film thickness on adsorption. Synthesized nanocomposite was characterized by XRD, TEM, and EDX analyses before and after adsorption. Nanocomposites were separated from samples taken at certain times during adsorption by a magnetic field and Pb II was determined in the remaining solution through ICP-MS. The equilibrium value of adsorption was reached within three hours. TiO2PLDOPAFe3O4-2 nanocomposite with PLDOPA film thickness obtained through three hours of polymerization achieved the highest removal rate 97 and adsorption capacity 705 mgg. This can be attributed to adsorption primarily occurring on Fe3O4 nanoparticles deposited on the film surface. In agreement with characterization comments, experimental results show that TiO2PLDOPAFe3O4 nanocomposite can effectively remove Pb II from wastewater.

 Kurşun Pb, eser miktarlarda bile çevre ve canlı organizmalar üzerinde ciddi olumsuz etkileri olan bir ağır metaldir. Bu problemlerin önüne geçmek için özellikle atık suda yer alan Pb II iyonlarının deşarj öncesi belirli standart değerlere indirilmesi gerekmektedir. Adsorpsiyon; kullanım kolaylığı, düşük işletme maliyeti, yüksek seçicilik, düşük atık üretimi gibi avantajlarından dolayı ağır metal gideriminde sıklıkla tercih edilmektedir. Adsorpsiyonda kilit rollerden biri, adsorban seçimidir ve geleneksel absorbanlara kıyasla birçok üstün özelliğe sahip nanoboyutlu adsorbanlar, son yıllarda yoğun ilgi görmektedir. Bu çalışmada TiO2PLDOPAFe3O4 nanokompozitin, Pb II adsorpsiyonunda kullanımı ve PLDOPA film kalınlığının adsorpsiyon üzerine etkisi incelenmiştir. Sentezlenen nanokompozitin adsorpsiyon öncesinde ve sonrasında XRD, TEM ve EDX analizler ile karakterizasyonu yapılmıştır. Adsorpsiyon esnasında belirli sürelerde alınan numunelerden, manyetik alan aracılığıyla nanokompozit yapılar ayrılmış ve geri kalan çözeltide ICP-MS yardımı ile Pb II tayini yapılmıştır. Adsorpsiyon 3 saat içerisinde denge değerlerine ulaşmıştır. 3 saatlik polimerizasyonla elde edilen PLDOPA film kalınlığına sahip TiO2PLDOPAFe3O4-2 nanokompoziti, en yüksek giderim oranı 97 ve adsorpsiyon kapasitesi değerini 705 mgg vermiştir. Bu durum, adsorpsiyonun öncelikle film yüzeyinde biriken Fe3O4 nanopartikülleri üzerinde gerçekleşmesine dayandırılabilir. Karakterizasyon yorumlarıyla uyumlu olarak deneysel sonuçlar, TiO2PLDOPAFe3O4 nanokompozitinin atık sudan Pb IIyi etkili bir şekilde giderebileceğini göstermektedir.

Article Details

Use of TiO2@PLDOPA@Fe3O4 Nanocomposite for Lead Adsorption and Effect of PLDOPA Film Thickness on Adsorption

Authors:

Hayrunnisa Mazlumoğlu

Publisher:

Giresun University

Main Topics:

Atıksu Arıtma Süreçleri

Journal:

Karadeniz Fen Bilimleri Dergisi Vol.15 Issue 3, pp.1027-1045

Document Type:

Article

Publication Date:

9/2025

Document Language:

Turkish

Document ID (Org No.):

2001358294

pISSN:

2564-7377

Heavy metal removal

Lead adsorption

TiO2

Fe3O4

PLDOPAAğır metal giderimi

Kurşun adsorpsiyonu

TiO2

Fe3O4

PLDOPA

Issues

Article Details

Authors: Hayrunnisa Mazlumoğlu

Publisher: Giresun University

Main Topics: Atıksu Arıtma Süreçleri

Journal: Karadeniz Fen Bilimleri Dergisi Vol.15 Issue 3, pp.1027-1045

Document Type: Article

Publication Date: 9/2025

Document Language: Turkish

Document ID (Org No.): 2001358294

pISSN: 2564-7377

Issues

Authors:

Hayrunnisa Mazlumoğlu

Publisher:

Giresun University

Main Topics:

Atıksu Arıtma Süreçleri

Journal:

Karadeniz Fen Bilimleri Dergisi Vol.15 Issue 3, pp.1027-1045

Document Type:

Article

Publication Date:

9/2025

Document Language:

Turkish

Document ID (Org No.):

2001358294

pISSN:

2564-7377