Rajashree Bortamuly

Gauhati University

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Pranjal Saikia

Gauhati University

Manash R. Das

Academy of Scientific and Innovative Research

Debajyoti Mahanta

Gauhati University

Abu Taleb Miah

Gauhati University

Liju Elias

University of Kerala

Trishanku Kashyap

Gauhati University

Marinella Striccoli

Institute for Chemical and Physical Processes

Purna K. Boruah

Kyushu University

Rama Krishna Chava

Yeungnam University

Mengtao Sun

Harbin Institute of Technology

Cooperative Institutions

Centre National de la Recherche Scientifique

Gauhati University

Academy of Scientific and Innovative Research

Assam University

Institute for Chemical and Physical Processes

National Research Council

Indian Institute of Technology Hyderabad

Indian Institute of Technology Kharagpur

École Polytechnique Fédérale de Lausanne

Council of Scientific and Industrial Research

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Activated carbon derived from oleander seeds supported ceria-zirconia mixed oxides for enhanced supercapacitive behaviour

Journal of Energy Storage (2023)

Rajashree Bortamuly Sabina Yeasmin Liju Elias Manash R. Das Debajyoti Mahanta

Bimetallic strip

Carbon fibers

Mixed oxide

10.1016/j.est.2023.109029

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Citations (6)

TiO₂–CeO₂/Ag Composite as Electrode Material for Supercapacitors

ACS Applied Nano Materials (2024)

Trishanku Kashyap Rajashree Bortamuly Liju Elias Manash R. Das Debajyoti Mahanta

Electrochemical energy technologies play a pivotal role in the quest for a sustainable and cleaner future owing to their remarkable potential to revolutionize the way we generate, store, and utilize energy. In this context, the present study explores the synthesis and characterization of TiO2–CeO2 composites having surface-dispersed silver nanoparticles (TiO2–CeO2/Ag) as an efficient electrode material for supercapacitor application. The developed electrode materials are systematically characterized by using different techniques such as Fourier-transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The electrochemical performance of the electrode materials is assessed by using cyclic voltammetry, galvanometric charge–discharge, and electrochemical impedance spectroscopy. The obtained results show that the electrode material with 2 wt % Ag distributed over TiO2–CeO2 composites (TiO2–CeO2/Ag 2X) is the best material with the highest specific capacitance of 996 F/g and excellent cycling stability even after 2500 cycles. The obtained results give clear credence to the idea that the TiO2–CeO2/Ag composites could serve as an efficient electrode material for energy storage applications.

10.1021/acsanm.3c04601

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Nanosized Metal/Metal Oxides for Auto-Exhaust Purification

ACS symposium series (2020)

Bijoy Tudu Rajashree Bortamuly Pranjal Saikia

The rapid increase of automotive exhaust emissions has become a great concern as the impact on the environment is growing at an alarming rate. In this regard, development of efficient and more-resistant catalysts that can reduce the concentration of emission levels is greatly needed. Metal– and metal-oxide–based nanocatalysts represent the most suitable and efficient catalysts for the purification of auto-exhaust pollutants. The influence of metal oxide supports in improving the catalytic performance of metal catalysts has been broadly examined. It has also been observed that variation in composition of the catalysts remarkably enhances the catalytic activity. The reducible metal oxides–supported metal catalysts have exhibited superior catalytic activity in emission control. Hence, our main emphasis is on highly efficient metal oxide–supported noble metal catalysts for the elimination of three primary pollutants (CO, nitrogen oxides, and volatile organic compounds) of auto-exhaust emissions. It is clearly noticed that the catalytic activity is highly dependent on the preparation methods, metal particle size, and reaction conditions. The progress in this field in recent times has been comprehensively discussed in this review.

Nanomaterial-based catalyst

Noble metal

10.1021/bk-2020-1359.ch013

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List of Contributors

Elsevier eBooks (2019)

Ayuob Aghanejad Abdullah M. Al Mayouf M. Amutheesan Prabhakarn Arunachalam Aymen Amine Assadi

10.1016/b978-0-12-814134-2.00035-8

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Development of CeO2- and TiO2-Based Au Nanocatalysts for Catalytic Applications

Elsevier eBooks (2019)

Rajashree Bortamuly Abu Taleb Miah Pranjal Saikia

Nanomaterial-based catalyst

10.1016/b978-0-12-814134-2.00024-3

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Electrocatalytic CO ₂ Reduction to Methanol Using Nanocatalysts

Rajashree Bortamuly Trishanku Kashyap Pranjal Saikia

Increased CO 2 levels in the atmosphere are the reason for global warming and the greenhouse effect. Different methods have been used to convert CO 2 into valuable industrial chemicals and materials, out of which electrocatalytic reduction reaction is found to be the most suitable. To evaluate the electrocatalytic reduction efficiency, various parameters are used, including the type of electrodes, the electrolyte used, cathodic potential, the texture of the catalyst surface, etc. Depending upon the different factors, the reaction proceeds through different pathways and, consequently, leads to different products. This chapter will summarize some of the important aspects of the electrocatalytic CO 2 reduction (ECR) reaction, the electrochemical cells, and the nanocatalysts used for the purpose.

Nanomaterial-based catalyst

10.1002/9781119772057.ch26

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Titania supported bio-derived activated carbon as an electrode material for high-performance supercapacitors

Journal of Energy Storage (2021)

Rajashree Bortamuly Vangapally Naresh Manash R. Das Vipin Kumar Sadananda Muduli

Power density

Carbon fibers

10.1016/j.est.2021.103144

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Citations (19)