An innovative catalyst of PdNiP nanosphere deposited PEDOT:PSS/rGO hybrid material as an efficient electrocatalyst for alkaline urea oxidation

Lera, Israel Leka; Khasnabis, Sutripto; Wangatia, Lodrick Makokha; Femi, Olu Emmanuel; Ramamurthy, Praveen C.

doi:10.1007/s00289-022-04100-w

Cited by 5 publications

(3 citation statements)

References 44 publications

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“…As shown in Fig. 5b-d, with increased temperature and less weight loss upon deposition of PANI and rGO on the surface of EF can be reduced interlayer distance with increased number of energy level and enhanced crystallinity (Lera et al 2021). Therefore, the thermal stability of EF can be enhanced by using PANI, rGO and PANI/rGO as an efficient and low-cost adsorbent material which may be attributed to the electronic interaction between -C=O, -OH and -N.H.fragments of PANI and further π-π, ionic and hydrogen bond interaction between PANI/rGO composite chains.…”

Section: Thermogravimetric Analysismentioning

confidence: 85%

Polyaniline/Reduced Graphene Oxide Doping Induced Abundant Active Sites in Enset Fiber as an Efficient Adsorbent Material for Wastewater Treatment

Lera

2024

Preprint

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Analysis of physicochemical properties and treatment of water is vital to the environment and living standard of society. In this study, polyaniline (PANI)/enset fiber (EF), reduced graphene oxide/EF, and PANI/rGO/EF composites as adsorbent material s were prepared via facile in situ chemical oxidative polymerization techniques. The as-synthesized materials were characterized using XRD, FTIR, UV-VIS, TGA, and FTIR spectroscopy. The physical characterization reveals the deposition of PANI and rGO on the surface of the EF confirmed by cloudy and wrinkled fibrous morphology from SEM image. After physical characterization, the adsorption performance of the proposed materials was tested using the batch method. A result shows maximum adsorption capacity (qmax) of Cu2+ and Pb2+ ions by PANI/rGO coated EF (EF) was 10.11 mg/g and 13.4 mg/g, respectively which is higher than pristine EF, PANI/EF, and rGO/EF. When all parameters were optimized, adsorptive removal efficiency of PANI/rGO/EF composite material towards Pb2+ and Cu2+ ions was 99% and 97.77%, respectively. The Freundlich isotherm data for Cu2+ and Pb2+ have a good fit with the experimental data (R2 = 0.99 and 0.98), and Langmuir isotherm data for Cu2+ and Pb2+ (RL = 0.18 & 0.19), respectively. The pseudo-second-order kinetic isothermal was more fit with physiosorption at R2 = 0.99 for Cu2+ and R2 = 1 for Pb2+. Therefore, a synthesized novel material PANI/rGO/EF shows a remarkable adsorption performance compared with EF, PANI/EF, and rGO/EF due to doping-induced abundant active sites of composite material makes it a promising candidate for wastewater treatment techniques.

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Section: Thermogravimetric Analysismentioning

confidence: 85%

Polyaniline/Reduced Graphene Oxide Doping Induced Abundant Active Sites in Enset Fiber as an Efficient Adsorbent Material for Wastewater Treatment

Lera

2024

Preprint

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“…In order to further improve the conductivity of PEDOT:PSS, carbon materials can be added after doping EG. [52] Compared with other carbon materials, rGO has good dispersibility in PEDOT:PSS aqueous solution. [53,54] In addition, PEDOT:PSS also has π-π bonds with rGO.…”

Section: Electrical Modification Of Pedot:pss (For Upper Strain Layer)mentioning

confidence: 99%

An Ultra‐Sensitive Flexible Resistive Sensor with Double Strain Layer and Crack Inspired by the Physical Structure of Human Epidermis: Design, Fabrication, and Cuffless Blood Pressure Monitoring Application

Liu

et al. 2023

Adv Materials Technologies

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The cuffless blood pressure (BP) monitoring device has attracted much attention because of its comfortable and real‐time monitoring. Inspired by the physical structure of the human epidermis, an ultra‐sensitive flexible resistive sensor with a double strain layer and crack structure is prepared by screen printing in this study. The strain material of the sensor is mainly prepared by blending Poly(3,4‐ethylenedioxythiophene) :poly(styrenesulfonate) (PEDOT:PSS) with waterborne polyurethane and reduced graphene oxide. The sensor exhibits a high gauge factor (GF, ≈1682), fast response (≈48 ms), and long‐term stability (> 2000 cycles) at low strain (≈0–5%). The sensor is placed on the human radial artery and can accurately measure the pulse wave. The features of the pulse wave are automatically extracted using a convolutional neural network. Then the features are corrected using a long short‐term memory neural network, and the current BP value is predicted using a fully connected network layer. The BP result meets the A‐level standards of the Association for the Advancement of Medical Instrumentation and the British Hypertension Society. This study provides an efficient device and method for continuous and non‐invasive BP monitoring.

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“…As a significant electrochemical reaction for energy transformation and catalysis, several studies have been developed regarding nanostructured catalysts for the electro-oxidation of urea [ 28 ]. For instance, several studies have demonstrated that noble metal catalytic nanostructured materials such as Ru, Pt-, and Pd-based nanocomposites when used as anode catalysts exhibited a higher catalytic activity of the EOU [ 29 , 30 , 31 , 32 ]; however, their industrial use is restricted by cost-value and shortage. Hence, continuous studies are being undertaken to develop inexpensive, earth-abundant and low-cost non-noble metallic electrocatalyst materials for the EOU.…”

Section: Introductionmentioning

confidence: 99%

Ni2P Nanoparticle-Inserted Porous Layered NiO Hetero-Structured Nanosheets as a Durable Catalyst for the Electro-Oxidation of Urea

Wang

Kannan

et al. 2022

Nanomaterials

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The electro-oxidation of urea (EOU) is a remarkable but challenging sustainable technology, which largely needs a reduced electro-chemical potential, that demonstrates the ability to remove a notable harmful material from wastewater and/or transform the excretory product of humans into treasure. In this work, an Ni2P-nanoparticle-integrated porous nickel oxide (NiO) hetero-structured nanosheet (Ni2P@NiO/NiF) catalyst was synthesized through in situ acid etching and a gas-phase phosphating process. The as-synthesized Ni2P@NiO/NiF catalyst sample was then used to enhance the electro-oxidation reaction of urea with a higher urea oxidation response (50 mA cm−2 at 1.31 V vs. RHE) and low onset oxidation potential (1.31 V). The enhanced activity of the Ni2P@NiO/NiF catalyst was mainly attributed to effective electron transport after Ni2P nanoparticle insertion through a substantial improvement in active sites due to a larger electrochemical surface area, and a faster diffusion of ions occurred via the interactive sites at the interface of Ni2P and NiO; thus, the structural reliability was retained, which was further evidenced by the low charge transfer resistance. Further, the Ni2P nanoparticle insertion process into the NiO hetero-structured nanosheets effectively enabled a synergetic effect when compared to the counter of the Ni2P/NiF and NiO/NiF catalysts. Finally, we demonstrate that the as-synthesized Ni2P@NiO/NiF catalyst could be a promising electrode for the EOU in urea-rich wastewater and human urine samples for environmental safety management. Overall, the Ni2P@NiO/NiF catalyst electrode combines the advantages of the Ni2P catalyst, NiO nanosheet network, and NiF current collector for enhanced EOU performance, which is highly valuable in catalyst development for environmental safety applications.

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An innovative catalyst of PdNiP nanosphere deposited PEDOT:PSS/rGO hybrid material as an efficient electrocatalyst for alkaline urea oxidation

Cited by 5 publications

References 44 publications

Polyaniline/Reduced Graphene Oxide Doping Induced Abundant Active Sites in Enset Fiber as an Efficient Adsorbent Material for Wastewater Treatment

Polyaniline/Reduced Graphene Oxide Doping Induced Abundant Active Sites in Enset Fiber as an Efficient Adsorbent Material for Wastewater Treatment

An Ultra‐Sensitive Flexible Resistive Sensor with Double Strain Layer and Crack Inspired by the Physical Structure of Human Epidermis: Design, Fabrication, and Cuffless Blood Pressure Monitoring Application

Ni2P Nanoparticle-Inserted Porous Layered NiO Hetero-Structured Nanosheets as a Durable Catalyst for the Electro-Oxidation of Urea

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