Development of Tungsten Oxide Nanoparticle Modified Carbon Fibre Cloth as Flexible pH Sensor

Jamal, Mamun; Razeeb, Kafil M.; Shao, Han; Islam, Jahidul; Akhter, Irani; Furukawa, Hidemitsu; Khosla, Ajit

doi:10.1038/s41598-019-41331-w

Cited by 43 publications

(37 citation statements)

References 33 publications

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“…In the water treatment field, coagulants such as different iron salts (Fe 2 (SO 4 ) 3 .9H 2 O, FeCl 3 .6H 2 O) and aluminum salts (KAl(SO 4 ) 2 .12H 2 O, AlCl 3 .6H 2 O, Al 2 (SO 4 ) 3 .18H 2 O) are used to capture dissolved solids in wastewater by forming flocculants and to settle them at the bottom of the coagulation tank. Various parameters, including the pH of wastewater, the concentrations of pollutants, and the surface charge, are also associated with this process (Jamal et al 2019). MPs are negatively charged in aquatic media and can be removed by chemical coagulation.…”

Section: By Chemical Coagulationmentioning

confidence: 99%

Detection and removal of microplastics in wastewater: evolution and impact

Dey

Uddin

Jamal

2021

Environ Sci Pollut Res

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172

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The pervasiveness of microplastics in aquatic ecosystems has become a major environmental issue in recent years. The gradual dumping of plastic wastes, inadequate standard detection methods with specific removal techniques, and slow disposal rate of microplastics make it ubiquitous in the environment. Evidence shows that microplastics act as a potential vector by adsorbing different heavy metals, pathogens, and other chemical additives widely used in different raw plastic production. Microplastics are ingested by aquatic creatures such as fish and different crustaceans, and finally, people ingest them at the tertiary level of the food chain. This phenomenon is responsible for blocking the digestion tracts, disturbing the digestive behavior, finally decreasing the reproductive growth of entire living organisms. Because of these consequences, microplastics have become an increasing concern as a newly emerging potential threat, and therefore, the control of microplastics in aquatic media is required. This paper provides a critical analysis of existing and newly developed methods for detecting and separating microplastics from discharged wastewater, which are the ultimate challenges in the microplastic treatment systems. A critical study on the effect of microplastics on aquatic organisms and human health is also discussed. Thus, this analysis provides a complete understanding of entire strategies for detecting and removing microplastics and their associated issues to ensure a waste discharge standard to minimize the ultimate potential impact in aquatic environments.

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Section: By Chemical Coagulationmentioning

confidence: 99%

Detection and removal of microplastics in wastewater: evolution and impact

Dey

Uddin

Jamal

2021

Environ Sci Pollut Res

Self Cite

172

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“…Additionally, the accurate quantification of the pH is an important feature to be considered for long‐term monitoring of the 3D biomodels. Typically, the pH monitoring is made through light‐addressable potentiometric sensors (LAPS), [ 134 ] ion‐selective field effect transistors (ISFET), [ 135 ] metal oxide‐based potentiometric sensors, [ 136 ] or optical pH sensors. [ 137 ] Among these strategies, Zhang and co‐workers have developed an optical pH sensor based in the absorption of phenol red (≈515 nm, a supplement of culture medium that indicates the pH value), in the pH range of 6.5–8.0 with linear response and sensitivity of 0.159 V pH −1 .…”

Section: The Importance Of Sensors In Ooc Platformsmentioning

confidence: 99%

Organ‐on‐a‐Chip: A Preclinical Microfluidic Platform for the Progress of Nanomedicine

Rodrigues

Sousa

Gaspar

et al. 2020

Small

102

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Nanomedicine has emerged in the last few decades as a field that can significantly impact the diagnose and therapy of human diseases. [1,2] Based on the outstanding properties that materials acquired at the nanoscale, such as high surface-to-volume ratio, high physicochemical stability, high charge carrier mobility and biocompatibility, a variety of nanoformulations have been developed to be applied in medicine by tailoring their size, shape, charge, and surface functional groups. [2,3] Based on those properties, the design of multifunctional nanoparticles (NPs) for nanomedicine is one of the most promising and exciting research areas that is expected to revolutionize the medical field in the next few decades. [4] Some of these multifunctional NPs have the potentiality to combine both diagnosis and therapy, the so-called theranostics, which is one of the ultimate goals of this field to achieve personalized and precise medical care (Figure 1). Among the therapeutic techniques, nanomaterials developed for drug delivery purpose have been widely investigated as smart drug nanocarriers capable to target tumor cells, protect drugs from degradation, enhance drug solubility, improve biodistribution, extend drug life cycle, and prevent lethal side-effects to healthy tissues and organs. [2,3] The design of these smart drug delivery systems can be engineered to target a specific location by taking advantages of the host environment, using for instance antibodies, aptamers or peptides; and then react autonomously as stimuli-responsive drug release agents, triggered by endogeneous chemical reactions (e.g., enzymes, pH, hydrolysis) or exogeneous stimulisensitive mechanisms (e.g., near infrared light, temperature raise induced by an alternating magnetic field, among others). [5] Comprehensive reviews on the topic of smart nano-based drug delivery systems can be found elsewhere. [5,6] Further complex functionality is represented by smart theranostics, which hold high promise for the nanomedicine of the future. Next, recent representative examples from the research arena are described. Cai et al. [7] make use of enzyme-responsiveness to design a cathepsin B-sensitive theranostic agent. They synthesized a biodegradable conjugate composed of a Gd chelate (Gd-DOTA) as a T1-magnetic resonance imaging (MRI) contrast agent, Despite the progress achieved in nanomedicine during the last decade, the translation of new nanotechnology-based therapeutic systems into clinical applications has been slow, especially due to the lack of robust preclinical tissue culture platforms able to mimic the in vivo conditions found in the human body and to predict the performance and biotoxicity of the developed nanomaterials. Organ-on-a-chip (OoC) platforms are novel microfluidic tools that mimic complex human organ functions at the microscale level. These integrated microfluidic networks, with 3D tissue engineered models, have been shown high potential to reduce the discrepancies between the results derived from preclinical and clinical trials. However, ...

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“…One of the simplest and cost-effective methods for preparing tungsten trioxide nanoparticles is acid precipitation 23 . Great attention is recently directed toward increasing the nanometals implementation in various industrial sectors attributed to its tiny size and large surface-tomass ratio, besides it's a remarkable stability toward many harsh conditions 24,25 . Nonetheless, the high biotoxicity of some well-known NPs (Ag, Cu, Ti, etc.)…”

Section: Introductionmentioning

confidence: 99%

Novel Nanocombinations of L-tryptophan and L-cysteine: Preparation, Characterization and Their Applications for Dye Decolorization, Antimicrobial and Anticancer Activities

Abd-Elhamid

El‐Gendi

Abdallah

et al. 2021

Preprint

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Tungsten oxide WO3 nanoparticles (NPs) were prepared in a form of nanosheets with a homogeneous size and dimensions in one step through acid precipitation using a cation exchange column. The resulting WO3 nanosheets surface was decorated with one of the two amino acids (AAs) L-tryptophan (Trp) or L-cysteine (Cys) for their dye removal, antimicrobial, and antitumor activities. A noticeable improvement in the biological activity of WO3 NPs was detected upon amino acid modification compared to the original WO3. The prepared WO3-Trp and WO3-Cys exhibited strong dye removal activity toward methylene blue and safranin dyes with complete dye removal (100%) after 6 h. WO3-Cys NPs and WO3-Trp NPs revealed higher broad-spectrum antibacterial activity toward both G-ve and G+ve bacteria with strong antifungal activity toward Candida albicans. Anticancer results of the modified WO3-Cys and WO3-Trp NPs against various kinds of cancer cells including MCF-7, caco-2, and HepG-2 cells indicated that they have a potent effect in a dose-dependent manner with high selectivity to cancer cells and safety against normal cells. The expression levels of E2F2, Bcl-2 genes were found to be suppressed after treatment with both WO3-Cys and WO3-Trp NPs more than 5-FU-treated cells. While expression level of the p53 gene in all tested cells was evidently up-regulated after treatment by more than 5-8 folds as compared to untreated cells. The docking results confirmed the ability of both NPs to bind to P53 gene with relevant potency in binding to other tested gens and participation of cysteine SH-functional group in such interaction.

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Development of Tungsten Oxide Nanoparticle Modified Carbon Fibre Cloth as Flexible pH Sensor

Cited by 43 publications

References 33 publications

Detection and removal of microplastics in wastewater: evolution and impact

Detection and removal of microplastics in wastewater: evolution and impact

Organ‐on‐a‐Chip: A Preclinical Microfluidic Platform for the Progress of Nanomedicine

Novel Nanocombinations of L-tryptophan and L-cysteine: Preparation, Characterization and Their Applications for Dye Decolorization, Antimicrobial and Anticancer Activities

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