46. UMAIR BAIG

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Exploiting interfacial polymerization to fabricate hyper-cross-linked nanofiltration membrane with a constituent linear aliphatic amine for freshwater production

npj Clean Water

Humanity is facing a global challenge of dwindling water resources and the situation is intensify... more Humanity is facing a global challenge of dwindling water resources and the situation is intensifying due to growing population leading to excessive water pollution. Nanofiltration is an important membrane-based technology for the production of clean and potable water for domestic and industrial setups. Hyper-cross-linked polyamide thin film composite nanofiltration (HCPA-TFC-NF) membranes have been fabricated by using multifunctional amine 1 (possessing two primary -NH2 and two secondary -NH groups) and bifunctional terephthaloyl chloride 2 (TPC) through interfacial polymerization. The structure of the hyper-cross-linked polyamide network has been successfully confirmed by solid (CP-MAS) 13C NMR, XPS, AFM, FT-IR, elemental mapping, and EDX analysis. The membrane features such as surface morphology and hydrophilicity have been established by FE-SEM and water contact angle measurements. The FE-SEM analysis revealed the formation of uniform polyamide active layer on the surface of PS/P...

format_quoteHCPA-TFC-NF@M2 showed a flux of 35.71 L m−2 h−1 and 87.36% NaCl rejection, demonstrating high selectivity potential.format_quote

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Fabrication of Photo-Responsive Mesh Membrane with Surface-Engineered Wettability for Oil–Water Separation and Photocatalytic Degradation of Organic Pollutants

Membranes

A photo-responsive TiO2-coated stainless-steel mesh membrane (TiO2@SSM), possessing unique surfac... more A photo-responsive TiO2-coated stainless-steel mesh membrane (TiO2@SSM), possessing unique surface wettability, was fabricated. This TiO2@SSM membrane is found to be capable of separating oil and water from oily water and has the potential to carry out photocatalytic self-cleaning and/or the degradation of organic pollutants present in water. The fabrication of TiO2@SSM is quite simple: titanium dioxide (TiO2) nanoparticles were spray-coated onto stainless steel microporous mesh (SSM) substrates and annealed at the temperature of 500 °C. The fabricated TiO2@SSM membrane was structurally and morphologically characterized by XRD, FE-SEM, EDX, and elemental mapping. The contact angle measurements using a goniometer showed that the fabricated TiO2@SSM membrane surface is superhydrophilic and superoleophilic in air and superoleophobic under water. This is a favorable wetting condition for the water passing oil–water separation membrane, and this water passing property of the membrane eas...

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Digital Entrepreneurship: Future Research Directions and Opportunities for New Business Model

Sustainability

Digital entrepreneurship is a technological advancement in infrastructure that creates various pr... more Digital entrepreneurship is a technological advancement in infrastructure that creates various prospects for entrepreneurs. New digital enterprise models need attention in society, particularly concerning digital entrepreneurship opportunities, barriers, and success factors. Hence, this study gathers literature on digital entrepreneurship to compile methods and topics discussed by previous authors. Furthermore, this study illustrates research directions indicating opportunities for future scholars to work in this domain. A systematic approach across this study followed methodology and maintained a quality threshold by selecting 35 articles on digital entrepreneurship. Considering conceptual literature, the study identified six streams of digital entrepreneurship such as digital enterprise models, entrepreneurship procedure, strategical platform, ecosystem, entrepreneurship training, and social digital entrepreneurship. Hence, this study determines paths for recent research on digita...

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Exploring Investment Behavior of Women Entrepreneur: Some Future Directions

International Journal of Financial Studies, 2021

This study aims to explore the investment behavior of female entrepreneurs as the new competitor ... more This study aims to explore the investment behavior of female entrepreneurs as the new competitor in the investment field and to determine the underlying factors that influence their investment attitudes. A qualitative investigation approach was employed for the study that includes 18 in-depth exploratory interviews to ascertain the fundamental determinants of the investment behavior represented by female entrepreneurs, an emergent section in investment. The accumulated data was analyzed through manual coding procedures. The study revealed that female entrepreneurs are not inclined to take risk in their business for investment decisions, they are somewhat conservative and risk averse. This research also asserts that if they spend quality time and get better training about the nuances of different investment tools, so they will also take risks in investment activities. Two big cosmopolitan cities Karachi and Lahore in Pakistan were selected as sample for this study. Research in other ...

format_quoteLimited knowledge and time constraints lead female entrepreneurs to prefer safe investments like bank savings and mutual funds, despite a willingness to engage in risks.format_quote

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46. UMAIR BAIG

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