Rashi Gusain
Verified @gmail.com
Postdoctoral fellow, Department of Chemical Sciences
University of Johannesburg
RESEARCH INTERESTS
ionic liquids, 2D nanomaterials, carbon based nanomaterials, wastewater treatment, photocatalysis, CO2 capture and conversion, tribology, electrocatalysis, photocatalysis
46
Scopus Publications
4480
Scholar Citations
30
Scholar h-index
45
Scholar i10-index
Scopus Publications
- Composites of 2D Materials and Bacterial Cellulose for Sustainable Energy Storage and Environmental Remediation
Rashi Gusain, Neeraj Kumar, Shayan Seyedin, and Yunhong Jiang
Wiley
AbstractThe ever‐increasing demand for sustainable energy sources and environment protection is the focus of significant scientific scrutiny worldwide. Advanced composite materials have been developed to help meet the energy demand and environmental sustainability. Researchers are drawn to the study of two‐dimensional (2D) materials/bacterial cellulose (BC) composites for energy and environmental applications due to the intriguing electrical, mechanical, electrochemical, and catalytic properties of 2D materials combined with the sustainability and biocompatibility of BC. In this review, the key strategies are explained to develop 2D materials/BC composites and highlight unique properties of such fascinating systems. The recent progress on the application of advanced 2D materials/BC composites in energy storage (supercapacitors and batteries) and environmental remediation (water treatment, antimicrobial activity, and environmental gas sensing) are explained in detail highlighting future outlooks and challenges in the field. This review is intended to serve as a valuable resource for researchers currently engaged in the study of 2D materials and/or BC for different applications and is expected to shape the upcoming research and industrial applications of emerging 2D materials/BC composites. - B<inf>2</inf>O<inf>3</inf>-Nanoparticles-Decorated N-Rich Reduced Graphene Oxide Composites for the Enhanced Visible-Light-Assisted Photocatalytic Degradation of Ciprofloxacin
Neeraj Kumar, Rashi Gusain, Mike Masukume, and Suprakas Sinha Ray
Wiley
The occurrence of pharmaceutical pollutants in the environment is a mounting concern due to their detrimental effects on living organisms, including humans. Ciprofloxacin (CIP) is a regularly used antibiotic detected in wastewater and surface water. Therefore, developing effective, sustainable strategies for its elimination is paramount. Photocatalysis is an efficient approach that has been widely recommended for the removal of CIP from water. However, improved photocatalyst performance, stability, and activation in abundant visible light are essential for better photocatalyst systems. In this study, a novel boron‐oxide‐decorated nitrogen‐rich reduced graphene oxide (B2O3/N‐rGO) nanocomposite is prepared and characterized for its photocatalytic performance toward CIP degradation. The B2O3/N‐rGO nanocomposites are in situ synthesized via wet chemical route, and the morphology and structural properties of nanocomposites are extensively characterized. In the results, it is shown that the B2O3/N‐rGO nanocomposite demonstrated significantly enhanced photocatalytic performance (98%, 3 h) compared to N‐rGO and pure B2O3 toward the degradation of CIP under visible‐light irradiation. The enhanced photocatalytic activity is attributed to the synergistic benefit of B2O3 and N‐rGO, which improves light absorption, charge separation efficiency, adsorption sites, and delayed electron–hole recombination. In summary, the synthesized B2O3/N‐rGO nanocomposite photocatalyst can potentially be applied for various environmental remediation and energy‐related applications. - 3D-Printed Hydrogels and Aerogels for Water Treatment and Energy Storage Applications
Rashi Gusain, Neeraj Kumar, and Suprakas Sinha Ray
Wiley - Hydrogel Nanocomposite Adsorbents and Photocatalysts for Sustainable Water Purification
Neeraj Kumar, Rashi Gusain, Sadanand Pandey, and Suprakas Sinha Ray
Wiley - Recent Advances in Photoreactors for Water Treatment
Jean Bedel Batchamen Mougnol, Shelter Maswanganyi, Rashi Gusain, Neeraj Kumar, Elvis Fosso‐Kankeu, Suprakas Sinha Ray, and Frans Waanders
Wiley - Nano-engineered 2D Materials for CO<inf>2</inf> Capture
Neeraj Kumar, Rashi Gusain, and Suprakas Sinha Ray
Springer International Publishing - Applications of MoS<inf>2</inf> Nanostructures in Wastewater Treatment
Rashi Gusain, Neeraj Kumar, and Suprakas Sinha Ray
Springer International Publishing - Preface
- Metal oxide-based nanocomposites for photocatalytic reduction of CO2
Rashi Gusain, Neeraj Kumar, and Suprakas Sinha Ray
CRC Press - Recent advances in adsorptive removal of heavy metal and metalloid ions by metal oxide-based nanomaterials
Kanika Gupta, Pratiksha Joshi, Rashi Gusain, and Om P. Khatri
Elsevier BV - Bismuth Molybdate Nanoplates Supported on Reduced Graphene Oxide: An Effective Nanocomposite for the Removal of Naphthalene via Adsorption-Photodegradation
Shelter Maswanganyi, Rashi Gusain, Neeraj Kumar, Elvis Fosso-Kankeu, Frans Boudewijn Waanders, and Suprakas Sinha Ray
American Chemical Society (ACS)
Polycyclic aromatic hydrocarbons are a class of persistent organic water pollutants that raise serious concerns owing to their carcinogenicity and other negative impacts on humans and ecosystems. In this study, Bi2MoO6/reduced graphene oxide (rGO) nanocomposites were designed and prepared for the adsorption-assisted photodegradation of naphthalene molecules in an aqueous medium. The synthesized Bi2MoO6 nanoplates and Bi2MoO6/rGO nanocomposites were characterized by X-ray diffraction, Fourier transform infrared, scanning electron microscopy, high-resolution transmission microscopy, X-ray photoelectron spectroscopy, ultraviolet spectroscopy, Brunauer–Emmett–Teller, and photoluminescence measurements. The photodegradation of naphthalene molecules was observed to assess the photocatalytic characteristics of the samples under visible light. The Bi2MoO6/rGO nanocomposites exhibited significantly improved photocatalytic efficiency compared to pure Bi2MoO6. Among the nanocomposites, those containing 2 wt % rGO showed the best photocatalytic activity. The incorporation of rGO enhanced the visible light absorption and decreased the recombination rate of photogenerated charge carriers. Moreover, a Bi2MoO6/rGO nanocomposite showed excellent reusability for five cycles. - MoS<inf>2</inf>Nanosheet/ZnS Composites for the Visible-Light-Assisted Photocatalytic Degradation of Oxytetracycline
Rashi Gusain, Neeraj Kumar, Francis Opoku, Penny Poomani Govender, and Suprakas Sinha Ray
American Chemical Society (ACS)
Wastewater management and treatment are crucial to preserve health and life on the planet. To achieve efficient wastewater treatment, MoS2 nanosheet/ZnS-based composites were prepared and tested fo... - Metal Oxide Nanocomposites for Wastewater Treatment
Pratiksha Joshi, Kanika Gupta, Rashi Gusain, and Om P Khatri
Wiley - Direct growth of nanostructural MoS<inf>2</inf>over the h-BN nanoplatelets: An efficient heterostructure for visible light photoreduction of CO<inf>2</inf>to methanol
Sangita Kumari, Rashi Gusain, Anurag Kumar, Nilesh Manwar, Suman L Jain, and Om P Khatri
Elsevier BV - Oil-miscible, halogen-free, and surface-active lauryl sulphate-derived ionic liquids for enhancement of tribological properties
Amzad Khan, Sathyam Reddy Yasa, Rashi Gusain, and Om P. Khatri
Elsevier BV - Polypyrrole-promoted RGO−MoS<inf>2</inf> nanocomposites for enhanced photocatalytic conversion of CO<inf>2</inf> and H<inf>2</inf>O to CO, CH<inf>4</inf>, and H<inf>2</inf> products
Neeraj Kumar, Santosh Kumar, Rashi Gusain, Ncholu Manyala, Salvador Eslava, and Suprakas Sinha Ray
American Chemical Society (ACS)
Copyright: 2020, American Chemical Society. Due to copyright restrictions, the attached PDF file contains the abstract of the full-text item. For access to the full-text item, please consult the publisher's website. - Fatty acid-derived ionic liquids as renewable lubricant additives: Effect of chain length and unsaturation
Rashi Gusain, Amzad Khan, and Om P. Khatri
Elsevier BV - Recent advances in carbon nanomaterial-based adsorbents for water purification
Rashi Gusain, Neeraj Kumar, and Suprakas Sinha Ray
Elsevier BV - Removal of naphthalene from simulated wastewater through adsorption-photodegradation by ZnO/Ag/GO nanocomposite
Nthambeleni Mukwevho, Rashi Gusain, Elvis Fosso-Kankeu, Neeraj Kumar, Frans Waanders, and Suprakas Sinha Ray
Elsevier BV - Factors Influencing the Photocatalytic Activity of Photocatalysts in Wastewater Treatment
Rashi Gusain, Neeraj Kumar, and Suprakas Sinha Ray
Wiley - Fatty acids-derived protic ionic liquids as lubricant additive to synthetic lube base oil for enhancement of tribological properties
Amzad Khan, Rashi Gusain, Manisha Sahai, and Om P. Khatri
Elsevier BV - Adsorptive removal and photocatalytic degradation of organic pollutants using metal oxides and their composites: A comprehensive review
Rashi Gusain, Kanika Gupta, Pratiksha Joshi, and Om P. Khatri
Elsevier BV - Efficient Removal of Pb(II) and Cd(II) from Industrial Mine Water by a Hierarchical MoS<inf>2</inf>/SH-MWCNT Nanocomposite
Rashi Gusain, Neeraj Kumar, Elvis Fosso-Kankeu, and Suprakas Sinha Ray
American Chemical Society (ACS)
In this study, we investigate the adsorption capability of molybdenum sulfide (MoS2)/thiol-functionalized multiwalled carbon nanotube (SH-MWCNT) nanocomposite for rapid and efficient removal of heavy metals [Pb(II) and Cd(II)] from industrial mine water. The MoS2/SH-MWCNT nanocomposite was synthesized by acid treatment and sulfurization of MWCNTs followed by a facile hydrothermal reaction technique using sodium molybdate and diethyldithiocarbamate as MoS2 precursors. Morphological and chemical features of the nanocomposite material were studied using various characterization techniques. Furthermore, the effects of adsorbent (MoS2/SH-MWCNT nanocomposite) concentration, contact time, initial concentration of heavy-metal ions, and reaction temperature were examined to determine the efficiency of the adsorption process in batch adsorption experiments. Kinetics and isotherm studies showed that the adsorption process followed pseudo-second-order and Freundlich adsorption isotherm models, respectively. Thermodynamic parameters calculated using van’t Hoff plots show the spontaneity and endothermic nature of adsorption. MoS2/SH-MWCNT nanocomposite demonstrates a high adsorption capacity for Pb(II) (90.0 mg g–1) and Cd(II) (66.6 mg g–1) following ion-exchange and electrostatic interactions. Metal–sulfur complex formation was identified as the key contributor for adsorption of heavy-metal ions followed by electrostatic interactions for multilayer adsorption. Transformation of adsorbent into PbMoO4–xSx and CdMoO4–xSx complex because of the adsorption process was confirmed by X-ray diffraction and scanning electron microscopy-energy-dispersive spectrometry. The spent adsorbent can further be used for photocatalytic and electrochemical applications; therefore, the generated secondary byproducts can also be employed for other purposes. - Organophosphate anion based low viscosity ionic liquids as oil-miscible additives for lubrication enhancement
Amzad Khan, Rashi Gusain, and Om P. Khatri
Elsevier BV
RECENT SCHOLAR PUBLICATIONS
- Composites of 2D materials and bacterial cellulose for sustainable energy storage and environmental remediation
R Gusain, N Kumar, S Seyedin, Y Jiang
Advanced Sustainable Systems 8 (12), 2400341 2024 - Biopolymer Aerogels for Sustainable Environmental Remediation
N Kumar, R Gusain, SS Ray, Y Jiang
Elsevier 2024 - Advancements in 3D Printed Hydrogels: Techniques, Applications, and Future Trends
R Gusain, N Kumar, Y Jiang
Elsevier 2024 - B2O3‐Nanoparticles‐Decorated N‐Rich Reduced Graphene Oxide Composites for the Enhanced Visible‐Light‐Assisted Photocatalytic Degradation of Ciprofloxacin
N Kumar, R Gusain, M Masukume, SS Ray
Solar RRL 7 (20), 2300475 2023 - 3D‐Printed Hydrogels and Aerogels for Water Treatment and Energy Storage Applications
R Gusain, N Kumar, SS Ray
ChemistrySelect 8 (20), e202300738 2023 - Recent advances in photoreactors for water treatment
JBB Mougnol, S Maswanganyi, R Gusain, N Kumar, E Fosso‐Kankeu, ...
Photoreactors in Advanced Oxidation Processes: The Future of Wastewater 2023 - Nano-engineered 2D Materials for CO2 Capture
N Kumar, R Gusain, SS Ray
Two-Dimensional Materials for Environmental Applications, 409-439 2023 - Applications of MoS2 Nanostructures in Wastewater Treatment
R Gusain, N Kumar, SS Ray
Two-Dimensional Materials for Environmental Applications, 351-374 2023 - Two-Dimensional Materials for Environmental Applications
N Kumar, R Gusain, SS Ray
Springer 2023 - Hydrogel nanocomposite adsorbents and photocatalysts for sustainable water purification
N Kumar, R Gusain, S Pandey, SS Ray
Advanced Materials Interfaces 10 (2), 2201375 2023 - 13 Metal Oxide-Based
R Gusain, N Kumar, SS Ray
Advanced Materials for a Sustainable Environment: Development Strategies and 2022 - Metal Oxide-Based Nanocomposites for Photocatalytic Reduction of CO2
R Gusain, N Kumar, SS Ray
Advanced Materials for a Sustainable Environment, 293-315 2022 - Recent advances in adsorptive removal of heavy metal and metalloid ions by metal oxide-based nanomaterials
K Gupta, P Joshi, R Gusain, OP Khatri
Coordination Chemistry Reviews 445, 214100 2021 - Bismuth molybdate nanoplates supported on reduced graphene oxide: an effective nanocomposite for the removal of naphthalene via adsorption–photodegradation
S Maswanganyi, R Gusain, N Kumar, E Fosso-Kankeu, FB Waanders, ...
ACS omega 6 (26), 16783-16794 2021 - MoS2 Nanosheet/ZnS Composites for the Visible-Light-Assisted Photocatalytic Degradation of Oxytetracycline
R Gusain, N Kumar, F Opoku, PP Govender, SS Ray
ACS Applied Nano Materials 4 (5), 4721-4734 2021 - Direct growth of nanostructural MoS2 over the h-BN nanoplatelets: An efficient heterostructure for visible light photoreduction of CO2 to methanol
S Kumari, R Gusain, A Kumar, N Manwar, SL Jain, OP Khatri
Journal of CO2 Utilization 42, 101345 2020 - Oil-miscible, halogen-free, and surface-active lauryl sulphate-derived ionic liquids for enhancement of tribological properties
A Khan, SR Yasa, R Gusain, OP Khatri
Journal of Molecular Liquids 318, 114005 2020 - Polypyrrole-Promoted rGO–MoS2 Nanocomposites for Enhanced Photocatalytic Conversion of CO2 and H2O to CO, CH4, and H2 Products
N Kumar, S Kumar, R Gusain, N Manyala, S Eslava, SS Ray
ACS Applied Energy Materials 3 (10), 9897-9909 2020 - Carbon nanomaterial-based adsorbents for water purification: Fundamentals and applications
SS Ray, R Gusain, N Kumar
Elsevier 2020 - Factors influencing the photocatalytic activity of photocatalysts in wastewater treatment
R Gusain, N Kumar, SS Ray
Photocatalysts in advanced oxidation processes for wastewater treatment, 229-270 2020
MOST CITED SCHOLAR PUBLICATIONS
- Adsorptive removal and photocatalytic degradation of organic pollutants using metal oxides and their composites: A comprehensive review
R Gusain, K Gupta, P Joshi, OP Khatri
Advances in colloid and interface science 272, 102009 2019
Citations: 729 - Recent advances in carbon nanomaterial-based adsorbents for water purification
R Gusain, N Kumar, SS Ray
Coordination Chemistry Reviews 405, 213111 2020
Citations: 492 - Reduced graphene oxide–CuO nanocomposites for photocatalytic conversion of CO2 into methanol under visible light irradiation
R Gusain, P Kumar, OP Sharma, SL Jain, OP Khatri
Applied Catalysis B: Environmental 181, 352-362 2016
Citations: 372 - Recent advances in adsorptive removal of heavy metal and metalloid ions by metal oxide-based nanomaterials
K Gupta, P Joshi, R Gusain, OP Khatri
Coordination Chemistry Reviews 445, 214100 2021
Citations: 233 - Hierarchical Microspheres of MoS2 Nanosheets: Efficient and Regenerative Adsorbent for Removal of Water-Soluble Dyes
AT Massey, R Gusain, S Kumari, OP Khatri
Industrial & Engineering Chemistry Research 55 (26), 7124-7131 2016
Citations: 221 - Alkyl-chain-grafted hexagonal boron nitride nanoplatelets as oil-dispersible additives for friction and wear reduction
S Kumari, OP Sharma, R Gusain, HP Mungse, A Kukrety, N Kumar, ...
ACS applied materials & interfaces 7 (6), 3708-3716 2015
Citations: 175 - Efficient Removal of Pb(II) and Cd(II) from Industrial Mine Water by a Hierarchical MoS2/SH-MWCNT Nanocomposite
R Gusain, N Kumar, E Fosso-Kankeu, SS Ray
ACS omega 4 (9), 13922-13935 2019
Citations: 166 - Covalently attached graphene–ionic liquid hybrid nanomaterials: synthesis, characterization and tribological application
R Gusain, HP Mungse, N Kumar, TR Ravindran, R Pandian, H Sugimura, ...
Journal of Materials Chemistry A 4 (3), 926-937 2016
Citations: 149 - Halogen-free bis (imidazolium)/bis (ammonium)-di [bis (salicylato) borate] ionic liquids as energy-efficient and environmentally friendly lubricant additives
R Gusain, P Gupta, S Saran, OP Khatri
ACS applied materials & interfaces 6 (17), 15318-15328 2014
Citations: 148 - Removal of naphthalene from simulated wastewater through adsorption-photodegradation by ZnO/Ag/GO nanocomposite
N Mukwevho, R Gusain, E Fosso-Kankeu, N Kumar, F Waanders, SS Ray
Journal of Industrial and Engineering Chemistry 81, 393-404 2020
Citations: 118 - Fatty acid ionic liquids as environmentally friendly lubricants for low friction and wear
R Gusain, OP Khatri
Rsc Advances 6 (5), 3462-3469 2016
Citations: 115 - Ultrasound assisted shape regulation of CuO nanorods in ionic liquids and their use as energy efficient lubricant additives
R Gusain, OP Khatri
Journal of Materials Chemistry A 1 (18), 5612-5619 2013
Citations: 112 - Fatty-acid-constituted halogen-free ionic liquids as renewable, environmentally friendly, and high-performance lubricant additives
R Gusain, S Dhingra, OP Khatri
Industrial & Engineering Chemistry Research 55 (4), 856-865 2016
Citations: 111 - MoS2 Nanosheet/ZnS Composites for the Visible-Light-Assisted Photocatalytic Degradation of Oxytetracycline
R Gusain, N Kumar, F Opoku, PP Govender, SS Ray
ACS Applied Nano Materials 4 (5), 4721-4734 2021
Citations: 87 - Polypyrrole-Promoted rGO–MoS2 Nanocomposites for Enhanced Photocatalytic Conversion of CO2 and H2O to CO, CH4, and H2 Products
N Kumar, S Kumar, R Gusain, N Manyala, S Eslava, SS Ray
ACS Applied Energy Materials 3 (10), 9897-9909 2020
Citations: 82 - Hydrogel nanocomposite adsorbents and photocatalysts for sustainable water purification
N Kumar, R Gusain, S Pandey, SS Ray
Advanced Materials Interfaces 10 (2), 2201375 2023
Citations: 76 - Factors influencing the photocatalytic activity of photocatalysts in wastewater treatment
R Gusain, N Kumar, SS Ray
Photocatalysts in advanced oxidation processes for wastewater treatment, 229-270 2020
Citations: 74 - Halogen-free imidazolium/ammonium-bis (salicylato) borate ionic liquids as high performance lubricant additives
R Gusain, R Singh, KLN Sivakumar, OP Khatri
Rsc Advances 4 (3), 1293-1301 2014
Citations: 74 - Fatty acids-derived protic ionic liquids as lubricant additive to synthetic lube base oil for enhancement of tribological properties
A Khan, R Gusain, M Sahai, OP Khatri
Journal of Molecular Liquids 293, 111444 2019
Citations: 71 - Physicochemical and tribophysical properties of trioctylalkylammonium bis (salicylato) borate (N888 n-BScB) ionic liquids: effect of alkyl chain length
R Gusain, PS Bakshi, S Panda, OP Sharma, R Gardas, OP Khatri
Physical Chemistry Chemical Physics 19 (9), 6433-6442 2017
Citations: 64