Review
Chemistry, Multidisciplinary
Sapana Jadoun, Jorge Yanez, Hector D. Mansilla, Ufana Riaz, Narendra Pal Singh Chauhan
Summary: The accessibility to clean water is crucial for humans, but a large number of people worldwide still die due to water contamination. Therefore, the application of advanced materials and techniques is necessary. This article reviews the use of nanohybrids combining conducting polymers and zinc oxide for photocatalytic water purification, and introduces several preparation methods and their advantages.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Kefayat Ullah, Won-Chun Oh
Summary: Novel visible-light photocatalyst TiO2-FG/Sr-hexaferrite nanocomposites were fabricated using a simple hydrothermal technique, and their properties were analyzed using various techniques. The unique composite catalyst showed superior photocatalytic properties for the disintegration of organic dyes under visible-light irradiation due to the synergistic effect of TiO2-FG and the fast conducting path provided by the graphene surface. The ternary structure between TiO2, FG, and Sr-hexaferrites also contributed to the high photocatalytic behavior.
Article
Chemistry, Multidisciplinary
Gizem Gumusgoz Celik, Burcu Dedeoglu, Ayse Gul Gurek, Yunus Zorlu, Mehmet Menaf Ayhan
Summary: Supramolecular synthesis using halogen bonding was employed to facilitate the co-crystallization of BODIPY structures with nitrogen-containing structures. Successful synthesis of BODIPY derivative co-crystals was achieved by increasing geometric accessibility of s holes of iodine. The crystal structures exhibited different architectures, driven mainly by electrostatic forces.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Multidisciplinary Sciences
Muhammad Hafeez, Sumera Afyaz, Awais Khalid, Pervaiz Ahmad, Mayeen Uddin Khandaker, Muhammad Umar Khayam Sahibzada, Ikhtiar Ahmad, Jahanzeb Khan, Fahad A. Alhumaydhi, Talha Bin Emran, Abubakr M. Idris
Summary: In this work, TiO2 and Co-S doped TiO2 nanostructures were prepared using sol-gel and wet impregnation methods for photocatalytic degradation of pollutant dyes in water purification. The synthesized nanostructures showed excellent photodegradation activity, with Co-S doped TiO2 exhibiting a higher dye degradation rate compared to pure TiO2.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Soumitra Sau, Flora Banerjee, Suman Kalyan Samanta
Summary: Triphenylamine (TPA)-anthracene (AN)-based conjugated microporous polymers (CMPs) with bright cyan fluorescence in tetrahydrofuran dispersion were synthesized by Suzuki-Miyaura cross-coupling reaction. These polymers exhibited high surface area, thermal stability, as well as fluorescence-based sensing of nitroaromatics and photocatalytic reduction of nitroaromatic micropollutants. The polymers also showed good recyclability without significant loss of catalytic efficiency.
ACS APPLIED NANO MATERIALS
(2023)
Review
Environmental Sciences
Madhav Krishna Goswami, Abhishek Srivastava, Rajeev Kumar Dohare, Anjani Kumar Tiwari, Anupam Srivastav
Summary: Globally, the treatment and disposal of industrial pollutants, such as heavy metal ions (HMIs) and dyes, pose a significant challenge. The development of efficient and cost-effective technologies for removing these toxins from wastewater is crucial for public health and aquatic ecosystems. Conducting polymer-based magnetic nanocomposites (CP-MNCPs) have shown promise in adsorption-based wastewater treatment, particularly for HMIs and dye removal. The combination of CPs with SiO2, graphene oxide (GO), and multi-walled carbon nanotubes (MWCNTs) has demonstrated enhanced adsorption capacity, suggesting future research should focus on the development of cost-effective hybrid CPs-nanocomposites.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Physical
Jannatun Zia, Ufana Riaz
Summary: Current research focuses on developing facile techniques for wastewater treatment, with semiconductor-based photocatalysis emerging as a promising method for degrading toxic pollutants. Conducting polymers and their nanohybrids are attracting attention due to their electrochemical properties and efficacy in degrading organic pollutants. The review highlights recent advances in the field and is expected to be important for researchers in heterogeneous photocatalysis using CPs.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Review
Polymer Science
Mohammad Ilyas Khan, Mohammed Khaloufa Almesfer, Abubakr Elkhaleefa, Ihab Shigidi, Mohammed Zubair Shamim, Ismat H. Ali, Mohammad Rehan
Summary: Proper treatment and disposal of industrial pollutants pose significant techno-economical challenges globally. Pollutants like heavy metal ions and organic dyes in wastewater are harmful due to their carcinogenic and toxic nature. Conductive polymer-based nanomaterials have gained interest for environmental remediation, demonstrating adsorption capabilities for pollutants like heavy metal ions and organic dyes.
Article
Chemistry, Multidisciplinary
Alafate Adili, Angie B. Korpusik, Daniel Seidel, Brent S. Sumerlin
Summary: Visible light-mediated direct decarboxylation is a versatile technique for the synthesis of functional materials with tailored compositions and properties. This process allows for the generation of carbon-centered radicals in polymer chains without the need for preactivation of acid groups. It can be used to obtain challenging copolymers and trigger degradation of polymer backbones.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Environmental Sciences
Sue Jiun Phang, Jin Mei Goh, Lling-Lling Tan, Wuen Pei Cathie Lee, Wee-Jun Ong, Siang-Piao Chai
Summary: A novel graphitic carbon nitride metal-free homojunction photocatalyst was synthesized via hydrothermal polymerization, showing excellent photocatalytic activity under low-powered excitation sources. The homojunction photocatalyst demonstrated significantly increased efficiency compared to pristine materials, attributed to improved separation and transfer of electron-hole pairs across the interface. Additionally, the photocatalyst displayed exceptional stability and durability after multiple reaction cycles.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Review
Chemistry, Multidisciplinary
Jiahao Liu, Weiliang Qi, Mengmeng Xu, Tiju Thomas, Siqi Liu, Minghui Yang
Summary: Rapid industrialization has led to the accumulation of various environmental pollutants, which poses a threat to the ecological environment of the earth. Environmental remediation has become a priority, and piezocatalytic techniques have gained attention for their unique ability to utilize the piezoelectric effect. This review provides a comprehensive summary of recent developments in piezocatalytic techniques for environmental remediation, including the origin of the piezoelectric effect, classification of piezoelectric materials, their application, and potential mechanisms. Urgent problems and future development of piezocatalytic techniques are also discussed.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Environmental Sciences
Chunxiao Wu, Lin Jing, Jiguang Deng, Yuxi Liu, Shuang Li, Sijie Lv, Yajie Sun, Qichao Zhang, Hongxing Dai
Summary: Red phosphorus (RP) is a new class of photocatalyst with tunable bandgaps and strong visible-light response, but its photocatalytic activity is still limited due to low charge carrier mobility and severe charge trapping effects. Various efforts have been made to improve its activity, such as morphology modification and cocatalysts addition.
Review
Biotechnology & Applied Microbiology
Ekambaram Gayathiri, Palanisamy Prakash, Kuppusamy Selvam, Mukesh Kumar Awasthi, Ravindran Gobinath, Rama Rao Karri, Manikkavalli Gurunathan Ragunathan, Jayaprakash Jayanthi, Vimalraj Mani, Mohammad Ali Poudineh, Soon Woong Chang, Balasubramani Ravindran
Summary: Increased industrialization has led to the use of synthetic dyes in various industries, but the release of harmful chemicals from dye industries into water reservoirs can harm the ecosystem, plants, and humans. It is necessary to develop efficient waste management systems to minimize environmental stress. Bioremediation and phytoremediation are effective methods for reducing dye contamination. This study provides a comprehensive evaluation of commonly used plants and microbes as dye removal technologies and proposes more efficient methods for large-scale dye removal and decolorization.
Article
Environmental Sciences
B. Shalini Reghunath, Deepak Davis, K. R. Sunaja Devi
Summary: MAX phase, with both ceramic and metallic properties, has been of significant interest in materials research. In this study, Cr2AlC MAX phase powder was successfully fabricated and utilized for photocatalytic degradation of organic pollutants, showing high efficiency. The reaction follows pseudo-first-order kinetics with active species identified as O-2 center dot(-) and h(+), and the catalyst can be reused for multiple cycles.
Article
Environmental Sciences
Xidong Zhang, Yaohua Huang, Wen-Juan Chen, Siyi Wu, Qiqi Lei, Zhe Zhou, Wenping Zhang, Sandhya Mishra, Pankaj Bhatt, Shaohua Chen
Summary: This article introduces the application of neonicotinoids, their harmful effects on non-target organisms, and the importance of microbial degradation in removing pesticide residues.
ENVIRONMENTAL RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Sapana Jadoun, Jorge Yanez, Hector D. Mansilla, Ufana Riaz, Narendra Pal Singh Chauhan
Summary: The accessibility to clean water is crucial for humans, but a large number of people worldwide still die due to water contamination. Therefore, the application of advanced materials and techniques is necessary. This article reviews the use of nanohybrids combining conducting polymers and zinc oxide for photocatalytic water purification, and introduces several preparation methods and their advantages.
ENVIRONMENTAL CHEMISTRY LETTERS
(2022)
Review
Polymer Science
Ufana Riaz, Neetika Singh, Fathimath Rashnas Srambikal, Sumbul Fatima
Summary: This review focuses on the recent advancements in conducting polymeric hydrogels based on polyaniline (PANT) and polypyrrole (PPy). The synthesis strategies and common characterization techniques for PANI- and PPy-based hydrogels are discussed. The review also covers the current literature on biomedical and electrochemical applications of these materials.
Article
Chemistry, Physical
Aleena Mir, Amit Kumar, Ufana Riaz
Summary: In this study, sodium alginate-based composite hydrogels using polyaniline (PANI), poly(o-phenylenediamine) (POPD), poly(1-naphthylamine) (PNA), and poly(vinylidene fluoride) (PVDF) were synthesized and characterized. The hydrogels were investigated for their spectral, morphological, and rheological properties. Metformin hydrochloride (MFH) was used as a model drug, and the release profiles were studied using intestinal fluid pH of 7.4. The incorporation of conducting polymers as crosslinking agents significantly affected the release behavior, which could be used to optimize and control the release of metformin hydrochloride.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Polymer Science
Jannatun Zia, Mohd Riyazuddin, Shaila Jackson, Darlene K. Taylor, Ufana Riaz
Summary: The synthesis of nanocomposites of beta-cyclodextrin (beta-CD) with polyaniline (PANI) and polypyrrole (PPy) to design core-shell nanocomposites was reported in this study. The spectral, morphological, and thermal characteristics of the synthesized nanocomposites were investigated. The incorporation of PANI and PPy in beta-CD was confirmed by IR spectra, while UV-visible spectra confirmed the polaronic state of conducting polymers in the nanocomposites. SEM analysis revealed the core-shell like morphology of the nanocomposites. In vitro drug release studies using ciprofloxacin (CIP) showed sustained release behavior of the nanocomposites, indicating their potential as effective antibiotic drug delivery vehicles.
Article
Materials Science, Multidisciplinary
Ufana Riaz, Nuzhat Nabi, Faith R. Nwanze, Fei Yan
Summary: This study for the first time reports the modification of aniline with alanine using ultrasound-assisted polymerization. The formation of Ala-incorporated polyaniline (PANI) was confirmed by various analyses. The binding affinity of Ala/PANI towards BSA and HSA was found to be good, with hydrogen bonding and Van der Waal's forces playing a significant role.
Article
Chemistry, Physical
Ishfaq Ahmad Rather, Ufana Riaz, Rashid Ali
Summary: UV-vis spectroscopy and TD-DFT calculations were used to investigate the anion binding of meso-substituted one-walled phthalimide-based calix[4]pyrrole (m-PC4P, 6) in acetonitrile. The results showed that m-PC4P (6) exhibited higher anion binding affinities compared to the parent C4P system, possibly due to additional weak CH-anion interactions besides four NH-hydrogen bonds of the C4P framework. The binding affinity decreased with the increase in halide size from fluoride to iodide, and m-PC4P (6) showed better binding with nitrate anion compared to simple C4P (1).
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Multidisciplinary Sciences
Ufana Riaz, Shayista Gaffar, Kristen Hauser, Fei Yan
Summary: This study presents a facile synthesis of CuFe2O4 nanoparticles and their formulation as nanohybrids with polythiophene (PTh). The structural and morphological properties were characterized using FT-IR, XRD, SEM-EDS, and UV-Vis spectroscopy. The nanohybrids exhibited a decrease in band gap with increasing PTh loading. The nanohybrids were applied as photocatalysts for the degradation of diphenyl urea and polyethylene under visible light and microwave irradiation, with promising catalytic efficiency observed.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Shayista Gaffar, Aleena Mir, Amit Kumar, Javed Alam, Ufana Riaz
Summary: This study reports for the first time the microwave-assisted catalytic degradation of isoniazid drug using organic-inorganic hybrids of PTh decorated ZnFe2O4 nanoparticles. The nanohybrids demonstrated high efficiency in degrading the drug within a short period of time, and a tentative mechanism of degradation was proposed.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Aaliyah Farooq, Javed Alam, Ufana Riaz
Summary: This study reports the use of Polypyrrole/Polythiophene Co-Oligomers as photocatalysts for the degradation of Bisphenol A. The results show that the organic photocatalysts achieved efficient degradation within 120 minutes, even for high concentrations of Bisphenol A.
Article
Chemistry, Physical
Ufana Riaz, Syed Marghoob Ashraf
Summary: This study reports the synthesis of a dye-incorporated o-phenylenediamine oligomer and analyzes its structure and electronic transitions. The results demonstrate that the dye-modified oligomer exhibits higher fluorescence intensity and can be used for near infra-red imaging. Density functional theory (DFT) studies predict the theoretical properties of the oligomer and suggest its potential application as a drug sensor.
ACS PHYSICAL CHEMISTRY AU
(2023)
Article
Chemistry, Multidisciplinary
Ufana Riaz, Aaliyah Farooq, Nuzhat Nabi, Faith R. Nwanze, Fei Yan
Summary: This study reports the synthesis and characterization of water-dispersible polypyrrole (WD-PPy) and polythiophene (WD-PTh) copolymers in different weight ratios using experimental and theoretical techniques. Spectroscopic characterization of the copolymers was conducted using experimental C-13-NMR, FTIR, and UV-visible studies, as well as theoretical FTIR and UV-visible studies. Furthermore, biophysical interaction studies with bovine serum albumin (BSA) and human serum albumin (HSA) were performed, revealing strong binding with potential applications in designing inhibitors and biosensors.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Polymer Science
Aaliyah Farooq, Nuzhat Nabi, Javed Alam, Ufana Riaz
Summary: Water-soluble polyfuran and polythiophene co-oligomers were synthesized and their biophysical interactions with bovine serum albumin and human serum albumin were studied. The interactions were found to be higher with human serum albumin, and were mediated through hydrogen bonding and pi-alkyl interaction. These co-oligomers showed high binding affinity towards human serum albumin, suggesting their potential use in protein sensors.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Environmental Sciences
Shayista Gaffar, Amit Kumar, Javed Alam, Ufana Riaz
Summary: In this study, CuFe2O4 and CuFe2O4/polyaniline (PANI) nanohybrids were used as photocatalysts for the degradation of TC-HCl. The nanohybrids showed superior photocatalytic performance compared to pristine CuFe2O4, with a maximum degradation rate of 86%. The degraded fragments were analyzed and a tentative degradation mechanism was proposed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Ufana Riaz, Nuzhat Nabi, India Pointer, Amit Kumar, Darlene. K. Taylor
Summary: This mini-review covers recent advances in attaching biomolecules to polyaniline (PANI) and discusses the immobilization and detection of proteins in polymers. Several proteins have been successfully attached to polymers using different immobilization techniques. The future application of these materials in diagnosis and detection is also explored.
Review
Chemistry, Multidisciplinary
Aleena Mir, Amit Kumar, Ufana Riaz
Summary: This short review discusses the current research status of conductive polymeric hydrogels (CPHs), focusing on polyaniline (PANI) hydrogel. It covers the properties, preparation methods, common characterization techniques, and applications of PANI hydrogels in various fields such as sensor and actuator manufacturing, biomedicine, and soft electronics. The future development and applications of PANI hydrogels are also mentioned.
