Electron microscopy investigations of surface-modulated nanomaterials for electrocatalytic applications (Record no. 431043)

MARC details
000 -LEADER
fixed length control field 02880nam a22002177a 4500
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 231130b |||||||| |||| 00| 0 eng d
082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER
Classification number 547.7 GAY
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Gayen, Meghabarna
245 ## - TITLE STATEMENT
Title Electron microscopy investigations of surface-modulated nanomaterials for electrocatalytic applications
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Place of publication, distribution, etc Bangalore:
Name of publisher, distributor, etc Indian Institute of Science,
Date of publication, distribution, etc 2023
300 ## - PHYSICAL DESCRIPTION
Extent 236p.:
Other physical details col. ill.
Accompanying material e-Thesis
Size of unit 10.71 MB
500 ## - GENERAL NOTE
General note includes bibliographical reference and index
502 ## - DISSERTATION NOTE
Dissertation note PhD; 2023; MATERIALS RESEARCH CENTRE<br/>
520 ## - SUMMARY, ETC.
Summary, etc With advancement and increasing usage of technologies, the demand for energy is also growing. However, the limited and ever-depleting stock of natural gas and fossil fuels has necessitated for better solutions in energy generation, conversion, and storage. To address the upcoming energy crisis, research on alternative energy conversion and storage applications has become an active field of interest. One of the most explored fields among them is electrocatalytic energy conversion reactions involving nanomaterials, which are interesting owing to their high activity originating from increased surface to volume ratio compared to the bulk counterpart. In recent literature, electrocatalysis has been employed for a variety of reactions like alcohol oxidation and water splitting. The activity of any catalyst depends on the surface /sub-surface atomic configuration, their electronic structure, and adsorption/ desorption energy of intermediates. Changing the composition of surface and sub-surface leads to change the adsorption and desorption energy of the intermediates on surface. The activity of any catalyst is tuned by surface modifications as and whenever required and their surface modifications lead to improvement in the corresponding property. Noble metal catalysts are well known in literature and were explored for different types of electrocatalysis. In this thesis, nanomaterial-based catalysts based on ultrathin Au nanowires as a template, are explored and their activities were investigated after their surface modifications. Extensive electron microscopic investigations were carried out using scanning transmission electron microscopy as a tool to understand the surface and sub-surface structure and composition at atomic scale. In some scenarios, high-angle annular dark field (HAADF)-STEM imaging can be limited by close atomic numbers of the constituent elements. There, other complementary techniques like XPS have been used to understand the composition. The synthesized templated catalysts have been tested for various reactions like electrocatalytic alcohol oxidations and water splitting reactions.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Gold nanowire
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element electrocatalysis
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element nanomaterials
700 ## - ADDED ENTRY--PERSONAL NAME
Personal name advised by Ravishankar, N
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier https://etd.iisc.ac.in/handle/2005/6280
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Thesis
Holdings
Withdrawn status Lost status Source of classification or shelving scheme Damaged status Not for loan Home library Current library Date acquired Total Checkouts Full call number Barcode Date last seen Uniform Resource Identifier Koha item type
    Dewey Decimal Classification   Not For Loan JRD Tata Memorial Library JRD Tata Memorial Library 30/11/2023   547.7 GAY ET00292 30/11/2023 https://etd.iisc.ac.in/handle/2005/6280 Thesis

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