Papers by Mohammad Mamunur Rashid
Applied Surface Science
In this work, TiO 2 was incorporated into the surface of cotton fabrics by an in situ sol-gel/hyd... more In this work, TiO 2 was incorporated into the surface of cotton fabrics by an in situ sol-gel/hydrothermal approach. Dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride (SiQAC) was added as a biobarrier Si precursor to enhance the synergistic effect/binding of TiO 2 to the surface of cotton fabric. A small amount of silver nitrate (AgNO 3) was added to produce Ag-doped TiO 2-coated fabric during hydrothermal treatment. The treated cotton fabric samples were characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction spectroscopy (XRD) to determine the surface morphology, chemical composition, chemical bonding and crystal structure, respectively. These results confirmed the successful application of well-dispersed TiO 2 , Ag and SiQAC on the surface of cotton fabric. The cotton fabric functionalized with TiO 2 + SiQAC + Ag nanocomposite exhibited superior antibacterial activity against Escherichia coli and Staphylococcus aureus, very good UV protection and excellent self-cleaning performance, which were maintained even after repeated washings. The wash resistance of the newly developed TiO 2-based hybrid nanocoating was attributed to the formation of the SiQAC polysiloxane matrix, which served as an anchoring site for the Ag-doped TiO 2 through the formation of Si-O-Ti bonds. The enhanced photocatalytic activity of TiO 2 in the coating was attributed to the formation of the Ag/ AgCl/TiO 2 heterostructure, which is promising for the surface and interface engineering of TiO 2-modified fabric.
AUTEX 2022 : 21st World Textile Conference, 2022
In this work, a cotton fabric with advanced photocatalytic and flame retardant properties was dev... more In this work, a cotton fabric with advanced photocatalytic and flame retardant properties was developed by using Ag-doped TiO2 in combination with 3-(trihydroxysilyl)propyl methyl phosphonate (TPMP) with a sustainable sol-gel/hydrothermal approach. Scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDS) were used to confirm the successful application of Ag-doped TiO2 and TPMP on the cotton fabric. The results of UPF, bacterial reduction against Escherichia coli and vertical flammability test showed that the creation of Ag-TiO2+TPMP nanocomposite on the surface of the fibres gave the cotton fabric superior antibacterial activity, very good UV protection and flame retardant activity.
Catalysts
The desirable chemical, physical, electronic, and optical properties of TiO2, as well as its high... more The desirable chemical, physical, electronic, and optical properties of TiO2, as well as its high availability, non-toxicity, and low price, make it very popular in the modern functional textile industry. Here, TiO2 from titanium tetraisopropoxide (TTIP) precursors at concentrations of 2, 4, and 6% and commercial TiO2 nanoparticles (NPs) in dispersion form were applied to cotton textiles using low-temperature application methods (i.e., sol–gel pad–dry–cure, pad–hydrothermal, and exhaustion–hydrothermal methods) to provide a systematic study of the influence of low-temperature application processes and TIIP concentration and on the overall properties of TiO2-functionalized textile materials. The treated cotton fabric samples were characterized using scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction spectroscopy (XRD) to determine their surface morphology, chemical composition, and crystal...
Nanomaterials, 2021
Nanotechnology has enabled tremendous breakthroughs in the development of materials and, nowadays... more Nanotechnology has enabled tremendous breakthroughs in the development of materials and, nowadays, is well established in various economic fields. Among the various nanomaterials, TiO2 nanoparticles (NPs) occupy a special position, as they are distinguished by their high availability, high photocatalytic activity, and favorable price, which make them useful in the production of paints, plastics, paper, cosmetics, food, furniture, etc. In textiles, TiO2 NPs are widely used in chemical finishing processes to impart various protective functional properties to the fibers for the production of high-tech textile products with high added value. Such applications contribute to the overall consumption of TiO2 NPs, which gives rise to reasonable considerations about the impact of TiO2 NPs on human health and the environment, and debates regarding whether the extent of the benefits gained from the use of TiO2 NPs justifies the potential risks. In this study, different TiO2 NPs exposure modes are discussed, and their toxicity mechanisms—evaluated in various in vitro and in vivo studies—are briefly described, considering the molecular interactions with human health and the environment. In addition, in the conclusion of this study, the toxicity and biocompatibility of TiO2 NPs are discussed, along with relevant risk management strategies.
Applied Surface Science, 2022
In this work, TiO 2 was incorporated into the surface of cotton fabrics by an in situ sol-gel/hyd... more In this work, TiO 2 was incorporated into the surface of cotton fabrics by an in situ sol-gel/hydrothermal approach. Dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride (SiQAC) was added as a biobarrier Si precursor to enhance the synergistic effect/binding of TiO 2 to the surface of cotton fabric. A small amount of silver nitrate (AgNO 3) was added to produce Ag-doped TiO 2-coated fabric during hydrothermal treatment. The treated cotton fabric samples were characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDS), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction spectroscopy (XRD) to determine the surface morphology, chemical composition, chemical bonding and crystal structure, respectively. These results confirmed the successful application of well-dispersed TiO 2 , Ag and SiQAC on the surface of cotton fabric. The cotton fabric functionalized with TiO 2 + SiQAC + Ag nanocomposite exhibited superior antibacterial activity against Escherichia coli and Staphylococcus aureus, very good UV protection and excellent self-cleaning performance, which were maintained even after repeated washings. The wash resistance of the newly developed TiO 2-based hybrid nanocoating was attributed to the formation of the SiQAC polysiloxane matrix, which served as an anchoring site for the Ag-doped TiO 2 through the formation of Si-O-Ti bonds. The enhanced photocatalytic activity of TiO 2 in the coating was attributed to the formation of the Ag/ AgCl/TiO 2 heterostructure, which is promising for the surface and interface engineering of TiO 2-modified fabric.
Journal of Fashion Technology & Textile Engineering
The review will introduce the surface modification of cotton textile with effect pigments to impr... more The review will introduce the surface modification of cotton textile with effect pigments to improve the optical functionalization of textiles. In this review, short description of two major groups of effect pigments-metallic effect pigment and pearl luster pigment will be discussed focusing on their optical characteristics while coated on textile. Orientation of pigment particles on coated textile, pigment-fabric bonding mechanism on coated textile and finally SEM images will be analyzed to understand the surface of modified textile in micro-scale observation. Hence, the possibility of improving optical functionalization of textile by treating with effect pigment shall be discussed in this work.
Surfaces and Interfaces, 2021
TiO 2 has already established itself as one of the most attractive nanomaterials for the function... more TiO 2 has already established itself as one of the most attractive nanomaterials for the functionalisation of textiles due to its unique structural, physicochemical, optical and electrical properties, nontoxicity and low cost. This review paper provides a comprehensive overview of recent advances in the chemical and physical modification of textile fibres with TiO 2 nanoparticles and nano-/microstructures and summarises the most important findings on the application processes and performance of TiO 2-modified textile substrates. Photocatalytic self-cleaning, antimicrobial activity, UV protection, hydrophobicity, thermal stability, flame retardancy and electrical conductivity are highlighted as central discussion topics in the review. Insights into the mechanisms for providing functional properties are presented; the influence of various factors on functionality is shown; and the latest strategies for TiO 2 surface modification to enhance visible light photocatalytic activity, including multiphase heterojunctions, ion doping, metal doping/loading, coupling with other semiconductors and surface sensitization, are discussed. This paper presents some new ideas for producing TiO 2-functionalized textile surfaces and suggests future research perspectives and directions in this research area.
Surfaces and Interfaces, 2020
TiO 2 has already established itself as one of the most attractive nanomaterials for the function... more TiO 2 has already established itself as one of the most attractive nanomaterials for the functionalisation of textiles due to its unique structural, physicochemical, optical and electrical properties, nontoxicity and low cost. This review paper provides a comprehensive overview of recent advances in the chemical and physical modification of textile fibres with TiO 2 nanoparticles and nano-/microstructures and summarises the most important findings on the application processes and performance of TiO 2-modified textile substrates. Photocatalytic self-cleaning, antimicrobial activity, UV protection, hydrophobicity, thermal stability, flame retardancy and electrical conductivity are highlighted as central discussion topics in the review. Insights into the mechanisms for providing functional properties are presented; the influence of various factors on functionality is shown; and the latest strategies for TiO 2 surface modification to enhance visible light photocatalytic activity, including multiphase heterojunctions, ion doping, metal doping/loading, coupling with other semiconductors and surface sensitiza-tion, are discussed. This paper presents some new ideas for producing TiO 2-functionalized textile surfaces and suggests future research perspectives and directions in this research area.
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Papers by Mohammad Mamunur Rashid