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Dave V, Sreenath S, Mishra B, Bhadu GR, Sethia G, Nagarale RK. Electro-osmotic flow of surfactant assisted zeta potential tuned silica frits. NEW J CHEM 2022. [DOI: 10.1039/d2nj00644h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The choice of surfactant is vital for tailoring the zeta potential of silica which in turn improves the electro-osmotic performance.
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Affiliation(s)
- Vidhiben Dave
- Membrane Science and Separation Technology Division, Electro Membrane Processes Laboratory, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
| | - Sooraj Sreenath
- Membrane Science and Separation Technology Division, Electro Membrane Processes Laboratory, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
| | - Bhavana Mishra
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
- Inorganic Materials and Catalysis Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Gopala Ram Bhadu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
- Analytical and Environmental Science Division and Centralized Instrument Facility, CSIR – Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, Gujarat, India
| | - Govind Sethia
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
- Inorganic Materials and Catalysis Division, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
| | - Rajaram K. Nagarale
- Membrane Science and Separation Technology Division, Electro Membrane Processes Laboratory, CSIR-Central Salt and Marine Chemicals Research Institute, Bhavnagar 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India
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Hydrothermal fluorination of carbon nanotubes and its composite with metal ion-doped ceria for a non-gassing flow-in-a-cell application. J APPL ELECTROCHEM 2021. [DOI: 10.1007/s10800-021-01550-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Sreenath S, Suman R, Sayana KV, Nayanthara PS, Borle NG, Verma V, Nagarale RK. Low-Voltage Nongassing Electroosmotic Pump and Infusion Device with Polyoxometalate-Encapsulated Carbon Nanotubes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1563-1570. [PMID: 33486948 DOI: 10.1021/acs.langmuir.0c03196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A low-voltage nongassing electroosmotic pump was assembled by sandwiching a silica frit between two carbon paper electrodes that were dip-coated with a paste consisting of phosphomolybdic acid/phosphotungstic acid (PMA/PTA)-encapsulated multiwalled carbon nanotubes (MWCNTs) and Nafion. The PMA/PTA encapsulation was a combined effect of their thermomigration and nanocapillary action in MWCNTs. The encapsulated MWCNTs retained desirable redox and charge transfer characteristics of PMA/PTA. The stable voltammogram in 1 M H2SO4 solution exhibited 77% charge retention. A total of three different possible pump configurations, namely, PUMP-I = PMA//SiO2//PMA, PUMP-II = PTA//SiO2//PTA, and PUMP-III = PMA//SiO2//PTA were put together. They are in the sequence of the anode, silica frit, and cathode. All pumps showed a linear dependence on the flow rate with a minimum operating voltage of 1 V, which is well below the thermodynamic potential of water splitting. PUMP-I provided an electroosmotic flux of 43.57 μLmin-1 V-1 cm-2 that matched the requirement of an infusion device like an insulin pump. The device was fabricated and its applicability has been demonstrated by delivering ∼1.8 mL of water at a 10 ± 2 μLmin-1 flow rate at 2 V constant applied voltage over a period of 3 h. Such a wearable device can be programed to deliver model insulin or pain medication drugs for chronic diseases.
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Affiliation(s)
- Sooraj Sreenath
- Electro Membrane Processes Lab, Membrane Science and Technology Division CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ravishankar Suman
- Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur 208016, India
| | - K V Sayana
- Electro Membrane Processes Lab, Membrane Science and Technology Division CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India
| | - P S Nayanthara
- Electro Membrane Processes Lab, Membrane Science and Technology Division CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India
| | - Nitin G Borle
- Electro Membrane Processes Lab, Membrane Science and Technology Division CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India
| | - Vivek Verma
- Department of Materials Science and Engineering, Indian Institute of Technology, Kanpur 208016, India
| | - Rajaram K Nagarale
- Electro Membrane Processes Lab, Membrane Science and Technology Division CSIR-Central Salt and Marine Chemicals Research Institute, Gijubhai Badheka Marg, Bhavnagar 364002, Gujarat, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Chola NM, Sreenath S, Dave B, Nagarale RK. A non‐gassing electroosmotic pump with sandwich of poly(2‐ethyl aniline)‐Prussian blue nanocomposite and PVDF membrane. Electrophoresis 2019; 40:2979-2987. [DOI: 10.1002/elps.201900230] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/22/2019] [Accepted: 08/26/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Noufal Merukan Chola
- Electro Membrane Processes DivisionCSIR‐Central Salt and Marine Chemicals Research Institute Bhavnagar Gujarat India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
| | - Sooraj Sreenath
- Electro Membrane Processes DivisionCSIR‐Central Salt and Marine Chemicals Research Institute Bhavnagar Gujarat India
| | - Brinda Dave
- Electro Membrane Processes DivisionCSIR‐Central Salt and Marine Chemicals Research Institute Bhavnagar Gujarat India
| | - Rajaram K Nagarale
- Electro Membrane Processes DivisionCSIR‐Central Salt and Marine Chemicals Research Institute Bhavnagar Gujarat India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad India
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