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T. Sheela

Bio: T. Sheela is an academic researcher from Kuvempu University. The author has contributed to research in topics: Langmuir adsorption model & Adsorption. The author has an hindex of 3, co-authored 3 publications receiving 390 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, the utilization of the zinc oxide nanoparticles (ZnO) as an adsorbent for the removal of Zn(II), Cd(II) and Hg(II)) ions from aqueous solution was investigated.

325 citations

Journal ArticleDOI
TL;DR: In this article, the adsorption studies of Cd(II) and Pb(II)-I ions onto NiO nanoparticles from aqueous solutions were conducted under batch process at different time, concentrations and temperature of the suspension.

141 citations

Journal ArticleDOI
TL;DR: In this paper, a barium hydrogen phosphate modified carbon paste electrode (BHP-CPE) was used as an electrochemical sensor for the simultaneous determination of Cd(II) and Pb(II), which has been demonstrated with differential pulse anodic stripping voltammetry (DPASV) in the potential window between −1.2
Abstract: The barium hydrogen phosphate modified carbon paste electrode (BHP-CPE) was prepared as an electrochemical sensor. Its propensity towards the simultaneous determination of Cd(II) and Pb(II) has been demonstrated with differential pulse anodic stripping voltammetry (DPASV) in the potential window between −1.2 V to −0.4 V. Important operational parameters such as pH of the solution, deposition potential and deposition time have been optimized. Under the optimized conditions, calibration curves were linear in the concentration range 1×10−8 to 8×10−8 M on BHP-CPE and 1×10−8 to 5×10−8 M on Nafion-BHP-CPE. Experiments disclosed that BHP-CPE and Nafion-BHP-CPE exhibit good performance for the simultaneous determination of Cd(II) and Pb(II).

10 citations

Proceedings ArticleDOI
24 Jun 2022
TL;DR: In this article , the trustworthiness of MEMS-based devices by designing and performance analysis through simulation in multiphysics environment is investigated and the main outcome of this work is to model a novel device with high reliability as well as sensitivity which are very useful for healthcare monitoring and related applications in different environments.
Abstract: Enhancement of reliability and sensitivity plays a vital role in Micro-Electro-Mechanical Systems (MEMS) technology, and it can be done very effectively by reducing the failures (through minimization) of such kind of systems. As it is a much known fact that using micro fabrication technique product development is not so easy because of its high cost and such facilities are not available everywhere. In this research work the primary focus is to know about the trust-worthiness of MEMS based devices by designing and performance analysis through simulation in multiphysics environment. The main outcome of this work is to model a novel device with high reliability as well as sensitivity which are very useful for healthcare monitoring and related applications in different environments. Through literature survey several reliability problems like stiction, fractural defects, immobilization, structural instability and many more has been noticed and possible solutions has been investigated which has been tested and analyzed in multiphysics environment. In this paper several micro-shapes and micro- structures has been designed and tested using different sensing materials but end of the result it has been found that microcantilever arrays are more useful and simple. Apart from this it has been also noticed that microcantilever has high reliability and sensitivity, it has been compared by applying some pressure to achieve maximum displacement. So, this research work is recommending microcantilever array sensor for different health care applications because of its high sensitivity, selectivity, high reliability, simplicity and versatility with different medium.

Cited by
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Journal ArticleDOI
TL;DR: This review focuses on the PANI and its derivatives based on nanoadsorbents for water purification, which are good adsorbents to remove various kinds of heavy metal ions and dyes from wastewaters/aqueous solutions.

406 citations

Journal ArticleDOI
TL;DR: Novel nanomaterials, including carbon-based nanommaterials, zero-valent metal, metal-oxide based nanomMaterials, and nanocomposites, and their applications for the removal of heavy metal ions from wastewater were systematically reviewed and their efficiency, limitations, and advantages were compared.
Abstract: Removal of contaminants in wastewater, such as heavy metals, has become a severe problem in the world. Numerous technologies have been developed to deal with this problem. As an emerging technology, nanotechnology has been gaining increasing interest and many nanomaterials have been developed to remove heavy metals from polluted water, due to their excellent features resulting from the nanometer effect. In this work, novel nanomaterials, including carbon-based nanomaterials, zero-valent metal, metal-oxide based nanomaterials, and nanocomposites, and their applications for the removal of heavy metal ions from wastewater were systematically reviewed. Their efficiency, limitations, and advantages were compared and discussed. Furthermore, the promising perspective of nanomaterials in environmental applications was also discussed and potential directions for future work were suggested.

378 citations

Journal ArticleDOI
TL;DR: In this paper, the applicability of inorganic adsorbents at the nanoscale is examined, including iron oxide (hematite, magnetite and maghemite), carbon nanotubes (CNT), and metal oxide based (Ti, Zn) and polymeric nanoadsorbents.
Abstract: Adsorption is widely popular for removal of heavy metals due to its low cost, efficiency, and simplicity. The focus of this review will be the use of inorganic adsorbents engineered at the nanoscale. The applicability of iron oxide (hematite, magnetite and maghemite), carbon nanotubes (CNT), and metal oxide based (Ti, Zn) and polymeric nanoadsorbents are examined. The advantages and limitations of the type of nanoadsorbent and its functionality are evaluated. Current developments and next generation adsorbents are also reviewed. Finally, scopes and limitations of these adsorbents will be addressed while investigating the types of metal ions that are harmful.

310 citations

Journal ArticleDOI
Yanyang Zhang1, Bing Wu1, Hui Xu1, Hui Liu1, Minglu Wang1, Yixuan He1, Bingcai Pan1 
TL;DR: In this paper, a review of the current applications of nanomaterials in water and wastewater treatment were briefly discussed, and the synthesis and physiochemical properties of diverse free nanomorphs, including carbon based nanommaterial, metal and metal oxides nanoparticles as well as noble metal nanoparticles, were focused on, and their performance and mechanisms towards removal of various contaminants were discussed.

267 citations

Journal ArticleDOI
TL;DR: In this paper, a modified exfoliated vermiculite (La5EV) was fabricated, characterized, and investigated for phosphate removal in batch tests for the first time, and the effect of initial phosphate concentration, contact time, temperature, pH, and coexisting ions on the adsorption capacity of La5EV was investigated in detail.

255 citations