Article
Chemistry, Analytical
Samuel Chufamo Jikamo, Tesfaye Haile Habtemariam, Tarekegn Heliso Dolla
Summary: An electrochemical sensor based on PANI-ZnO-NiO nanocomposite was developed for non-enzymatic detection of malathion. The structure, surface morphology, and optical properties of the nanocomposite were studied. The sensor showed low detection limit and wide linear range for malathion detection.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.
Article
Chemistry, Analytical
Z. Heidarnia, R. Parvizi, H. Khoshsima, H. Heidari
Summary: This study presents the first application of an absorptive silica-supported polyaniline molybdenum trioxide hybrid coating onto an optical fiber, integrating the concept of lossy mode resonance with molecular imprinting sensors. The coating exhibited unique optical properties and acted as a versatile optical transducer in the detection of pesticide residue in crops. Experimental and numerical analysis confirmed the excellent performance and sensitivity of the proposed sensing probe.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
A. Vinotha Alex, Tushar Deosarkar, N. Chandrasekaran, Amitava Mukherjee
Summary: In this study, a rapid and precise sensing strategy based on AChE inhibition was proposed for the detection of malathion using Ag-GO and ATCh. The nanocomposite of Ag-GO was successfully developed for the rapid and accurate detection of malathion, with good recovery rates in different samples.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Juan Lu, Xiangyu Shan, Qian Wu, Yingjie Zhao, Chao Li, Huiling Li, Shuning Yang, Li Tian
Summary: Metal oxides containing iron and zinc (ZnO-Fe2O3) combined with ruthenium bipyridine [Ru(bpy)32+], graphene oxide (GO) and multi-walled carbon nanotube (MWNTs) were used in electrochemiluminescence (ECL) to develop a solid-state ECL sensor for malathion determination. The sensor showed stable and amazing ECL response due to the electrocatalysis and electron transport capacity of ZnO-Fe2O3 and GO@MWNTs. The detection limit for malathion in vegetable samples was 2.2 x 10-11 M.
MICROCHEMICAL JOURNAL
(2023)
Article
Engineering, Environmental
Ajaz Ahmad Wani, Amjad Mumtaz Khan, Yahiya Kadaf Manea, Mansour A. S. Salem, Mohammad Shahadat
Summary: Neodymium-doped polyaniline supported Zn-Al layered double hydroxide (PANI@Nd-LDH) nanocomposite was prepared through ex-situ oxidative polymerization process. The nanocomposite exhibited selective fluorescence detection and adsorption of hexavalent chromium Cr(VI) with high removal capacity and sensitivity, showing potential as an excellent environmental probe.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Chemical
Hilda Dinah Kyomuhimbo, Immaculate Nyambura Michira, Emmanuel Iheanyichukwu Iwuoha, Usisipho Feleni
Summary: Metal-conducting polyaniline (PANI)-based nanocomposite materials have shown promising electrical, mechanical, and optical properties. In this study, different metal-PANI nanocomposites were prepared and formed nanocomposite-based electrode platforms. The results indicate that these nanocomposites exhibit improved electrical properties and could potentially be used in electrochemical applications.
Article
Chemistry, Multidisciplinary
Narayan Karmakar, Shilpa Jain, Rohan Fernandes, Akshara Shah, Uday Patil, Navinchandra Shimpi, Dushyant Kothari
Summary: The development of high sensitivity ammonia gas sensors based on PANI nanocomposite films and decorated with Ag-decorated ZnO nanorods is presented in this study.
Article
Polymer Science
Sawsan Mutlaq, Borhan Albiss, Anas A. Al-Nabulsi, Ziad W. Jaradat, Amin N. Olaimat, Mohammad S. Khalifeh, Tareq Osaili, Mutamed M. Ayyash, Richard A. Holley
Summary: A conductometric immunosensor was developed for rapid detection of the foodborne pathogen Escherichia coli O157:H7, showing high sensitivity and fast detection. The sensor demonstrated good detection efficiency in food matrices and has the potential for quick sample processing in food safety and quality control applications.
Article
Chemistry, Physical
Guangda Han, Jihai Cai, Chuanfu Liu, Junli Ren, Xiaohui Wang, Jia Yang, Xiaoying Wang
Summary: A highly sensitive sensor for dopamine detection was developed based on xylan-based carbon quantum dots, which utilized their reducibility to fabricate a nanocomposite material. This sensor showed great potential for clinical diagnostics and drug screening in the field of neurochemical diseases.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Analytical
Si Wang, Yadong Jiang, Bohao Liu, Zaihua Duan, Hong Pan, Zhen Yuan, Guangzhong Xie, Junbo Wang, Zhen Fang, Huiling Tai
Summary: A novel NH3 sensor based on 2D niobium carbide MXene-supported polyaniline nanocomposite was successfully developed for ultrasensitive NH3 detection under humidity atmosphere. The sensor exhibited superior selectivity, high sensitivity, low detection limit, and good long-term reliability towards NH3 with specific RH levels. The improved sensing properties were attributed to the interaction between PANI and Nb2CTx, which effectively reduced the influence of humidity on sensor performance.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Haohua Yang, Xueqi Zhao, Ziwei Zhang, Pinyi Ma, Xinghua Wang, Daqian Song, Ying Sun
Summary: This paper presents a sensitive SPR biosensor based on ZnO@Au nanomaterial for the detection of hIgG. The biosensor utilizes a sandwich strategy using biotin-streptavidin for secondary signal amplification. With optimal experimental conditions, the biosensor achieves a favorable concentration range of 0.0375-40 μg/mL for hIgG determination, which is approximately 67 times lower than conventional gold film-based SPR sensors.
Article
Chemistry, Physical
Lakshmanan Gurusamy, Ru-Wen Cheng, Sambandam Anandan, Cheng-Hua Liu, Jerry J. Wu
Summary: A nonenzymatic electrochemical sensor based on CuO/ZnO-modified glassy carbon electrode (GCE) achieved super-sensitive detection of malathion. The sensor demonstrated outstanding stability and detection performance, offering a promising alternative technique for organophosphorus pesticide determination.
Article
Chemistry, Analytical
Saroj Paneru, Devendra Kumar
Summary: A novel nanocomposite of polyaniline (PANI) matrix reinforced with Ag-doped CuO (Ag@CuO) nanoparticles was chemically synthesized and used as a sensing platform for paraoxon-ethyl (PE) detection. The synergistic effect of Ag@CuO and PANI matrix contributes to the outstanding conductivity, biocompatibility, and catalytic power of the biosensor. The optimized biosensor (AChE/Ag@CuO/PANI/ITO) shows a broad linear detection range and low detection limit, along with high sensitivity, selectivity, reproducibility, and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Xin-Yu Pei, Jian Wang, Jian-Wen Zhang, Xianggang Dai
Summary: In this study, a superhydrophobic Ag-ZnO@STA/Zn composite device was prepared to address the disadvantages of slow responsiveness, low sensitivity, and poor reproducibility in dynamic blood glucose detection. The device exhibited a large contact angle modulation and low threshold voltage, enabling successful application in diabetes detection. Additionally, it demonstrated high sensitivity detection ability to low concentration glucose and excellent anti-corrosion and bactericidal functions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Fikradis Habtamu, Sintayehu Berhanu, Teshome Mender
Summary: Ag-ZnO/PANI nanocomposites were prepared via sol-gel technique and showed high photocatalytic performance in degrading MG dye. During the photocatalytic degradation process, Ag-ZnO/PANI nanocomposites exhibited excellent photocatalytic activity in accordance with pseudo-first-order reaction kinetics.
JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Samuel Chufamo, Bezabih Kelita, Sintayehu Berhanu, Almaz Kemal, Alemu Lelago
Summary: Multilayered electroactive polyaniline-ZnO nanocomposite film was developed for the easy and fast detection of Paracetamol. The fabricated electrochemical sensor displayed good analytical performance, with a low detection limit and high sensitivity.
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
(2022)
Article
Multidisciplinary Sciences
Sintayehu Berhanu, Haftom Gebremariam, Samuel Chufamo
Summary: Binary and ternary nanocomposites were synthesized and used as photocatalysts for wastewater treatment, showing improved charge carrier mobility. The nanocomposites also exhibited effective photodegradation of methyl red. Additionally, the nanocomposites showed some toxicity towards aquatic organisms.
