Insights into phase engineering and morphological tailoring of WS2 nanostructures via temperature controlled hydrothermal synthesis Somveer, Dharamvir Singh Ahlawat, Davender Singh, Bijender Singh, Jitendra Gangwar Nano Express, 2025 Present work emphasizes on designing multiphase (1T and 2H) WS2 materials with fascinating controlled morphology in 3D (nanoflowers) and 1D (nanorods and nanowires) systems via a cost-effective solvo- and hydro-thermal method as well as comparing the effect of temperatures (200 and 210 °C) on distinctive properties. 1T- and 2H-WS2 nanostructures exhibit the dependence of crystallite size, morphology, stoichiometry and constituents homogeneity on synthesis temperatures. Investigations using different spectroscopic and microscopic techniqus reveal that the high temperature is implemental to produce effective nanostructured WS2 materials. The nanostructures 1T-WS2 and 2H-WS2 poses metallic and semiconducting characteristics, respectively. On the basis of initial experimental analyses, a plausible formation- and growth-mechanism is elucidated for both 1T- and 2H-WS2 nanostructures. Consequently, the facile preparation offers a great promise for developing heterostructures modified with multiphase WS2 and indicates a potential path way for both fundamental and application based researchers to continue further advancement in sensing and fuel cell technology.
Hydrothermally synthesized 2H-WS2 nanorods for improved supercapacitor electrode performance Somveer, Rohit Yadav, Jitesh Pani, Rakesh Nanna, Ranjit Kumar, Vinay S. Palaparthy, Kusum Kumari, Davender Singh, Dharamvir Singh Ahlawat, Hitesh Borkar, Jitendra Gangwar Physical Chemistry Chemical Physics, 2025 This study presents a facile and cost-effective approach for synthesizing WS2 nanorods at 240 °C via a hydrothermal approach, highlighting their promising potential as economically viable supercapacitors and hybrid energy storage systems.
Temperature-dependent hydrothermal processing of WS2 nanorods with controlled growth morphology, crystallography and optical properties Somveer, Dharamvir Singh Ahlawat, Davender Singh, Rohit Yadav, Kusum Kumari, Hitesh Borkar, Jitendra Gangwar Materials Letters, 2024 WS 2 nanorods with uniform size-distribution of width 120 nm and length 600–950 nm were successfully processed at 230 °C by reliable and cost-effective hydrothermal method . Two more temperatures (±10 °C) were employed to understand its influence on structural- and optical-properties. Consequences achieved from crystallography and spectroscopy analyses suggest that formation of hexagonal-phase of crystalline WS 2 with direct allowed band-gap values in upward manner as temperature increased. In light of temperature-dependent studies achieved from experimental evidences, plausible growth-mechanism of WS 2 nanorods was proposed. It will provide potential reference for future studies in both basic- and applied-WS 2 research.
Investigating an Impact of Leaf Bending Radius and Angle for Flexible Leaf Wetness Sensor Priyanka Khaparde, Kamlesh S. Patle, Hitesh Borkar, Jitendra Gangwar, Anil K. Roy, Vinay S. Palaparthy IEEE Sensors Letters, 2024 It is pivotal to monitor and examine the plant disease during in situ measurements to abate the crop loss. For this purpose, leaf wetness sensors (LWS) are widely used. However, for the LWS during in situ measurements, operational exposure is always a concern considering the plant growth at different stages. During the plant growth, the stem angle changes and even the leaf canopy bends either inward or outward due to environmental factors or physical trauma. Thus, LWS placed on the leaf canopy may produce erroneous results. In this letter, we have examined the effect of leaf bending radius (outward or inward) and angle (from 0° to 90°) on the flexible LWS fabricated on the polyamide substrates. LWS comprises of interdigitated electrodes (IDEs) having interelectrode spacing 0.05 cm. Fabricated LWS are 3.5 cm long and 1.5 cm wide in dimension. We have used the two LWS viz. one bare IDEs and another with molybdenum disulfide (MoS2) coated LWS. Lab experiments indicated that sufficient wetness remained on the bare IDEs and MoS2-coated IDEs till 40° and 70° of bending angle, respectively. Subsequently, when the LWS are bended outward or inward, bare IDEs and MoS2-coated IDEs retain water molecules till 0.7 and 1 cm, respectively, when bended from its initial length (3.5 cm).
New insight into visualization of structure models and Patterson densities for crystalline Fe2O3polymorphs Naveen Kumar, Davender Singh, Rajesh Kumar, Jitendra Gangwar Aip Conference Proceedings, 2024 Crystallographic characteristics especially crystal structure and Patterson densities form model electron and nuclear density of crystalline Fe2O3 phases are identified. A detailed study on five crystalline Fe2O3 phases in particular γ-, ε-, β-, ζ- and α-Fe2O3 are evaluated and discussed through VESTA theoretical approach. Such comparative crystallographic transformation and representation could be useful information about the arrangement of constituent elements and crystal chemistry for different crystalline Fe2O3 polymorphs.
Insights into phase engineering and morphological tailoring of WS 2 nanostructures via temperature controlled hydrothermal synthesis Somveer, DS Ahlawat, D Singh, B Singh, J Gangwar Nano Express 6 (2), 025010 , 2025 2025 Citations: 2
Enhanced structural, morphological and optical properties of WS2 nanorods synthesized via hydrothermal methodology DS Ahlawat, D Singh, J Gangwar Materials Science and Engineering: B 313, 117935 , 2025 2025 Citations: 9
Hydrothermally synthesized 2H-WS 2 nanorods for improved supercapacitor electrode performance R Yadav, J Pani, R Nanna, R Kumar, VS Palaparthy, K Kumari, D Singh, ... Physical Chemistry Chemical Physics 27 (23), 12231-12239 , 2025 2025
Structural-morphological insights into optimization of hydrothermally synthesized MoSe 2 nanoflowers for improving supercapacitor applications P Yadav, R Yadav, J Pani, RM Singh, D Singh, K Kumari, H Borkar, ... Dalton Transactions 54 (8), 3277-3286 , 2025 2025 Citations: 6
Temperature-dependent hydrothermal processing of WS2 nanorods with controlled growth morphology, crystallography and optical properties DS Ahlawat, D Singh, R Yadav, K Kumari, H Borkar, J Gangwar Materials Letters 377, 137386 , 2024 2024 Citations: 5
Remarkable enhancement in adsorption capacity of methylene blue by hydrothermally processed MoSe 2 nanosheets for environmental application P Siroha, V Khandelwal, D Singh, Ramovatar, J Gangwar Bulletin of Materials Science 47 (4), 233 , 2024 2024 Citations: 2
Hydrothermal Synthesis of Metal Sulfides (MS 2 ; M = Mo and W) Nanostructures with their Structural and Optical Properties. K Yadav, K Kumari, MK Bhandoria, Y Sharma, J Gangwar Oriental Journal of Chemistry 40 (4) , 2024 2024
A comprehensive analysis of the structural, microstructural, optical, and piezocatalytic activity of Ba0. 92Ca0. 08Zr0. 09Ti0. 91O3 and Ba0. 98Ca0. 02Zr0. 07Ti0. 93O3 lead-free … V Khandelwal, P Siroha, S Satapathy, S Pradhan, S Kumar, N Kumar, ... Journal of Alloys and Compounds 983, 173785 , 2024 2024 Citations: 15
Investigating an impact of leaf bending radius and angle for flexible leaf wetness sensor P Khaparde, KS Patle, H Borkar, J Gangwar, AK Roy, VS Palaparthy IEEE Sensors Letters 8 (3), 1-4 , 2024 2024 Citations: 2
New insight into visualization of structure models and Patterson densities for crystalline Fe 2 O 3 polymorphs N Kumar, D Singh, R Kumar, J Gangwar AIP Conference Proceedings 2995 (1), 020003 , 2024 2024
Crystal structures visualization of 2H- and 3R-phase of nanocrystalline WS 2 MK Bhandoria, RK Rana, Y Sharma, J Gangwar AIP Conference Proceedings 2995 (1), 020016 , 2024 2024 Citations: 1
Visualizing Structure Models and Patterson Densities in four WS 2 Polymorphs: Metastable (1T', 4M) and Stable (2H, 3R) Phases. MK BHANDORIA, RK RANA, H SHANKAR, Y SHARMA, J GANGWAR Oriental Journal of Chemistry 39 (5) , 2023 2023 Citations: 3
MoO3 adsorption kinetics and isotherm study with varied dye concentration N Kumar, J Kaur, S Sharma, J Gangwar, R Kumar Desalination and Water Treatment 302, 184-194 , 2023 2023 Citations: 10
Improved Supercapacitor Performance with Enhanced Interlayer Spacing of Nanoflower MoS 2 in Long Discharge Time in LED‐Glowing Application J Pani, D Maru, P Chaudhary, J Gangwar, KU Kumar, BC Yadav, H Borkar Energy Technology 11 (8), 2300193 , 2023 2023 Citations: 18
Polymer–metal oxide heterostructures: formation, characteristics and applications Y Sharma, AK Sharma, N Kumar, R Kumar, P Siroha, J Gangwar Metal Oxide-Based Heterostructures, 141-190 , 2023 2023
Experimental Investigation of Leaf Wetness Sensing Properties of MoS 2 Nanoflowers-Based Flexible Leaf Wetness Sensor P Khaparde, KS Patle, Y Agrawal, H Borkar, J Gangwar, AK Roy, ... IEEE Sensors Letters 7 (2), 1-4 , 2022 2022 Citations: 16
Highly sensitive hierarchical MoS2 nanoflowers for in-situ soil moisture sensing N Kumar, H Borkar, P Siroha, R Kumar, KS Patle, KK Dey, Y Agrawal, ... Sensors and Actuators B: Chemical 372, 132572 , 2022 2022 Citations: 19
Probing into crystallography and morphology properties of MoS 2 nanoflowers synthesized via temperature dependent hydrothermal method N Kumar, P Siroha, H Shankar, D Singh, Y Sharma, R Kumar, Ramovatar, ... Nano Express 3 (3), 035001 , 2022 2022 Citations: 24
Electric field modulated photoluminescence in ferroelectric ceramics for photosensitive device applications H Borkar, S Mishra, J Gangwar, D Haranath, A Kumar Materials Research Bulletin 152, 111831 , 2022 2022 Citations: 3
Asymmetric resistive switching by anion out-diffusion mechanism in transparent Al/ZnO/ITO heterostructure for memristor applications S Gora, L Thyda, G Dasi, R Muniramaiah, A Thakre, J Gangwar, ... Surfaces and Interfaces 30, 101950 , 2022 2022 Citations: 20
MOST CITED SCHOLAR PUBLICATIONS
Phase dependent thermal and spectroscopic responses of Al 2 O 3 nanostructures with different morphogenesis J Gangwar, BK Gupta, SK Tripathi, AK Srivastava Nanoscale 7 (32), 13313-13344 , 2015 2015 Citations: 263
Multiphase TiO 2 nanostructures: A review of efficient synthesis, growth mechanism, probing capabilities, and applications in bio-safety and health R Verma, J Gangwar, AK Srivastava RSC advances 7 (70), 44199-44224 , 2017 2017 Citations: 255
Time-resolved and photoluminescence spectroscopy of θ-Al 2 O 3 nanowires for promising fast optical sensor applications J Gangwar, BK Gupta, P Kumar, SK Tripathi, AK Srivastava Dalton transactions 43 (45), 17034-17043 , 2014 2014 Citations: 101
Prospects of emerging engineered oxide nanomaterials and their applications J Gangwar, BK Gupta, AK Srivastava Defence Science Journal 66 (4), 323-340 , 2016 2016 Citations: 64
NiO-based nanostructures with efficient optical and electrochemical properties for high-performance nanofluids J Gangwar, KK Dey, SK Tripathi, M Wan, RR Yadav, RK Singh, Samta, ... Nanotechnology 24 (41), 415705 , 2013 2013 Citations: 64
Morphology, mechanism and optical properties of nanometer-sized MgO synthesized via facile wet chemical method R Verma, KK Naik, J Gangwar, AK Srivastava Materials Chemistry and Physics 148 (3), 1064-1070 , 2014 2014 Citations: 60
Alumina nanoparticles find an application to reduce the ionic effects of ferroelectric liquid crystal T Joshi, J Prakash, A Kumar, J Gangwar, AK Srivastava, S Singh, ... Journal of Physics D: Applied Physics 44 (31), 315404 , 2011 2011 Citations: 60
Probing on crystallographic structural and surface morphology of hydrothermally synthesized MoS2 nanoflowers consisting of nanosheets N Kumar, P Siroha, Y Sharma, D Singh, KK Dey, R Kumar, H Borkar, ... Applied Surface Science Advances 6, 100167 , 2021 2021 Citations: 50
Microstructure, phase formations and optical bands in nanostructured alumina J Gangwar, K Kumar Dey, S Kant Tripathi, A Kumar Srivastava Advanced Materials Letters 2 (6), 402-408 , 2011 2011 Citations: 43
Low-voltage electro-optical memory device based on NiO nanorods dispersed in a ferroelectric liquid crystal A Chandran, J Prakash, J Gangwar, T Joshi, AK Srivastava, D Haranath, ... RSC advances 6 (59), 53873-53881 , 2016 2016 Citations: 41
Strong enhancement in thermal conductivity of ethylene glycol-based nanofluids by amorphous and crystalline Al2O3 nanoparticles J Gangwar, AK Srivastava, SK Tripathi, M Wan, RR Yadav Applied Physics Letters 105 (6) , 2014 2014 Citations: 35
Effect of nickel oxide nanoparticles on dielectric and optical properties of nematic liquid crystal G Jamwal, J Prakash, A Chandran, J Gangwar, AK Srivastava, AM Biradar AIP conference Proceedings 1675 (1), 030065 , 2015 2015 Citations: 30
Probing into crystallography and morphology properties of MoS 2 nanoflowers synthesized via temperature dependent hydrothermal method N Kumar, P Siroha, H Shankar, D Singh, Y Sharma, R Kumar, Ramovatar, ... Nano Express 3 (3), 035001 , 2022 2022 Citations: 24
Asymmetric resistive switching by anion out-diffusion mechanism in transparent Al/ZnO/ITO heterostructure for memristor applications S Gora, L Thyda, G Dasi, R Muniramaiah, A Thakre, J Gangwar, ... Surfaces and Interfaces 30, 101950 , 2022 2022 Citations: 20
Comparative study on crystallographic representation of transition metal oxides polymorphs nanomaterials using VESTA software: Case study on Fe 2 O 3 and TiO 2 P Siroha, D Singh, R Soni, J Gangwar AIP Conference Proceedings 2006 (1), 030038 , 2018 2018 Citations: 20
Highly sensitive hierarchical MoS2 nanoflowers for in-situ soil moisture sensing N Kumar, H Borkar, P Siroha, R Kumar, KS Patle, KK Dey, Y Agrawal, ... Sensors and Actuators B: Chemical 372, 132572 , 2022 2022 Citations: 19
Improved Supercapacitor Performance with Enhanced Interlayer Spacing of Nanoflower MoS 2 in Long Discharge Time in LED‐Glowing Application J Pani, D Maru, P Chaudhary, J Gangwar, KU Kumar, BC Yadav, H Borkar Energy Technology 11 (8), 2300193 , 2023 2023 Citations: 18
Experimental Investigation of Leaf Wetness Sensing Properties of MoS 2 Nanoflowers-Based Flexible Leaf Wetness Sensor P Khaparde, KS Patle, Y Agrawal, H Borkar, J Gangwar, AK Roy, ... IEEE Sensors Letters 7 (2), 1-4 , 2022 2022 Citations: 16
A comprehensive analysis of the structural, microstructural, optical, and piezocatalytic activity of Ba0. 92Ca0. 08Zr0. 09Ti0. 91O3 and Ba0. 98Ca0. 02Zr0. 07Ti0. 93O3 lead-free … V Khandelwal, P Siroha, S Satapathy, S Pradhan, S Kumar, N Kumar, ... Journal of Alloys and Compounds 983, 173785 , 2024 2024 Citations: 15
Porous nickel oxide nanostructures for supercapacitor applications R Datt, J Gangwar, SK Tripathi, RK Singh, A Kumar Srivastava Quantum Matter 5 (3), 383-389 , 2016 2016 Citations: 13