Article
Chemistry, Physical
Trin Kamjornsupamitr, Thanakorn Sangthumchai, Pranorm Saejueng, Jitapa Sumranjit, Andrew J. Hunt, Surangkhana Budsombat
Summary: Composite proton conducting membranes were successfully synthesized from chitosan, poly (vinyl alcohol) and sulfonic acid-functionalized silica nanoparticles. The effects of sulfosuccinic acid (SSA) content on membrane properties were studied, showing an increase in water vapor absorption, water uptake, ion exchange capacity, and proton conductivity with increasing SSA content. The influence of nanoparticle loading and polymer shell on membrane properties was also investigated.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Shuolin Zhou, Jinhua Lai, Xianxiang Liu, Geng Huang, Gaolin You, Qiong Xu, Dulin Yin
Summary: Sulfonic acid functionalized titanate nanotubes were prepared and showed excellent catalytic performance and stability.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Ouissal Salhi, Tarik Ez-Zine, Larbi Oularbi, Mama El Rhazi
Summary: A novel electrochemical sensor based on conducting polymer and multi-walled carbon nanotubes was developed for the detection of nitrite ions. The sensor exhibited excellent electro-catalytic activity and a low detection limit for nitrite. The hybrid material poly 1,8-DAN/f-MWCNT showed improved electronic transfer due to the synergic effect between the properties of poly 1,8-DAN and f-MWCNT.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Medicinal
Ling Gong, Shan Li, Zhengzhi Yin, Kelin Li, Jiawei Gu, Datong Wu, Yong Kong
Summary: Poly(p-aminobenzene sulfonic acid) and polypyrrole were electrodeposited onto a glassy carbon electrode to preconcentrate l-tryptophan through molecular imprinting. Overoxidized PPy/pABSA modified GCE showed higher affinity towards l-Trp than d-Trp due to specific electrochemical interactions.
Article
Chemistry, Multidisciplinary
Priyanka Choudhary, Arghya Sen, Ajay Kumar, Suman Dhingra, C. M. Nagaraja, Venkata Krishnan
Summary: The rational design and development of acid-base bifunctional heterogeneous catalysts for organic synthesis is challenging. A metal-free, low-cost, acid-base bifunctional sulfonated graphitic carbon nitride (S-g-C3N4) catalyst has been developed, exhibiting high catalytic potential towards Knoevenagel condensation and sequential tandem reactions.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Engineering, Electrical & Electronic
Tiziano Fapanni, Emilio Sardini, Mauro Serpelloni, Sarah Tonello
Summary: In recent years, the quantification of hydrogen peroxide has attracted increasing attention in various fields. Electrochemical transducers have gained particular interest due to their ease of fabrication, convenient integration with microfluidics and electronics, and cost-effectiveness. This study utilizes the novel technique of Aerosol jet printing to fabricate fully printed nanostructured electrochemical sensors for hydrogen peroxide detection. The performances of carbon nanotubes (CNTs) and graphene as printable nanostructures are explored and discussed. Both materials demonstrate comparable limit of detections (LODs) and sensitivity, with CNTs performing better in terms of sensitivity and graphene having a better resistance against noise.
IEEE SENSORS JOURNAL
(2022)
Article
Nanoscience & Nanotechnology
Vasuki Durairaj, Panpan Li, Touko Liljestrom, Niklas Wester, Jarkko Etula, Ilona Leppanen, Yanling Ge, Katri S. Kontturi, Tekla Tammelin, Tomi Laurila, Jari Koskinen
Summary: Four types of nanocellulosic materials with different functional groups were used to disperse multiwalled carbon nanotubes, resulting in composite electrodes with excellent stability and electrochemical properties in different electrolytes. Anionic fibrillar nanocellulosic composites showed strong electrostatic and physical enrichment effects, while denser crystalline composites did not exhibit such behavior. This study provides insights for developing customizable nanocellulose/carbon nanomaterial hybrid platforms for various electrochemical applications.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Pawan Kumar, Princy Gupta, Chandan Sharma
Summary: The surface modified magnetically tuned solid acid with sulfonic acid groups grafted on magnetic halloysite showed excellent physicochemical properties. Various analytical techniques confirmed the catalyst's performance, and it could be reused multiple times, offering a green synthesis method for bisamides and 4H-pyrans.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Ana Cristina Honorato de Castro, Lucas Ferrarezi, Alberth Wagner Gomes, Rafaela Vitti de Lima, Alzira Maria Serpa Lucho, Fabio Luiz Pisseti
Summary: This work presents an electrochemical sensor based on a poly (dimethylsiloxane) (PDMS) network functionalized with a sulfonic group, which allows for the simultaneous detection of ascorbic acid (AA), dopamine (DA), and uric acid (UA). The electrode exhibits stable behavior and suitable conductivity for use as an electrochemical sensor. By utilizing square wave voltammetry, the previously mentioned analytes can be detected and quantified with detection limits of 9.37, 9.50, and 0.14 μmol/L for AA, DA, and UA, respectively. The electrochemical properties of the electrode enable efficient, selective, and sensitive detection and quantification of the target analytes, making it suitable for simultaneous determination of AA, DA, and UA.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Muhammad Adnan Ashraf, Atif Islam, Muhammad Arif Butt, Tajamal Hussain, Rafi Ullah Khan, Shahid Bashir, Javed Iqbal
Summary: The study fabricated mixed matrix membranes (MMMs) of cellulose acetate/poly(vinylpyrrolidone) (CA/PVP) infused with acid functionalized multiwall carbon nanotubes (f-MWCNTs) for hemodialysis application. Characterization using FTIR, SEM, and other methods showed improved thermal stability, water permeate flux, and surface morphological analysis with the incorporation of f-MWCNTs. Urea and creatinine clearance performance also significantly increased with the f-MWCNTs integrated membranes.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Electrochemistry
Junhao Chen, Azadeh Nilghaz, Xinyu Chen, Shan Liu, Junfei Tian
Summary: This study presents a novel strategy for fabricating a third-generation glucose sensor on a screen-printed carbon electrode (SPCE). The direct electron transfer (DET) between glucose oxidase (GOx) and SPCE was achieved by immobilizing GOx in poly (3,4-ethylenedioxythiophene) (PEDOT) functionalized electrodes. This strategy eliminates the need for a mediated agent and shows high electrochemical responses of glucose in human blood plasma.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Biochemistry & Molecular Biology
Ping Wang, Shang Gao, Xinliang Chen, Li Yang, Xiusheng Wu, Shaojie Feng, Xianhai Hu, Jin Liu, Pei Xu, Yunsheng Ding
Summary: A series of poly(lactide)/poly(butylene adipate-co-terephthalate) (PLA/PBAT) composites containing different types of multi-walled carbon nanotubes (CNTs) were fabricated. The addition of a multifunctional epoxy oligomer (ADR) improved the compatibility between PBAT and PLA. The introduction of hydroxyl-functionalized CNTs at the PLA/PBAT interface and the inhibition effect of carboxyl-functionalized CNTs on chain extension reaction affected the interaction force between PLA and PBAT. The PLA/PBAT composite with hydroxyl-functionalized CNTs showed stronger interaction and better mechanical and dielectric properties.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Physical
Mamta Yadav, Devesh Kumar Singh, Dharmendra Kumar Yadav, Piyush Kumar Sonkar, Rupali Gupta, Vellaichamy Ganesan
Summary: This study explores the effect of two different catalytic supports (multi-walled carbon nanotubes (MWCNTs) and nitrogen-doped multi-walled carbon nanotubes (NMWCNTs)) and two different catalysts (copper phthalocyanine (CuPc) and sulfonic acid functionalized CuPc (CuPc-SO3-)) on the oxygen reduction reaction (ORR) in an acidic medium. The composite NMWCNTs-CuPc-SO3- exhibits higher ORR activity and selectivity compared to other composites. The durability of NMWCNTs-CuPc-SO3- is attributed to the coordination of CuPc-SO3- with nitrogen (Cu-Nx) on the surface of NMWCNTs.
Article
Chemistry, Analytical
Jinge Li, Liying Zhao, Wenbin Wang, Yanju Liu, Huaixia Yang, Jinming Kong, Fuchun Si
Summary: A novel sandwich-type electrochemical aptasensor was constructed for CEA detection, showing a wide detection range and low detection limit. PFcGE-CNTs composites prepared by ring-opening polymerization served as a platform, significantly amplifying the electrochemical signal.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Biochemistry & Molecular Biology
Mihaela Baibarac, Monica Daescu, Elena Matei, Daniela Nastac, Oana Cramariuc
Summary: A new composite material based on POPD fiber like structures, PVDF spheres, and DWNTs was synthesized, with changes in optical properties observed as a result of covalent functionalization of the carbon nanotubes. The presence of PVDF spheres on the surface of POPD fibers induced steric effects, affecting photoluminescence processes. Anisotropic photoluminescence studies revealed changes in binding angles as the concentration of carbon nanotubes increased in the composites.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
