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- 저자 : Vaishnavi Sharma (검색결과 2 건)
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Vaishnavi Sharma,Abhinandan Kumar,Pardeep Singh,Praveen Kumar Verma,Tansir Ahamad,Sourbh Thakur,Quyet Van Le,Van Huy Nguyen,Aftab Aslam Parwaz Khan,Pankaj Raizada 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
Water splitting technology is rapidly evolving in order to generate H2 in a sustainable manner to amendthe global energy crisis. Water splitting over semiconductor catalyst nanoparticles for large-scale hydrogenproduction has shown to be a simple and affordable procedure, attracting researchers from aroundthe world for more fruitful studies and development in the field of photocatalysis. In this respect,MoSe2 is a promising semiconductor photocatalyst owing to its non-toxic nature, low Gibbs free energy,high metallic character, impressive opto-electronic properties, and outstanding photocatalytic performance. Moreover, the 2D nature of MoSe2 allows the easy tuning of the bandgap to suit H2 evolution reactionapplication by simple synthesis techniques. Therefore, in this review, we have comprehensivelydiscussed the influence of morphology on photocatalytic water splitting with a main focus on the nanostructuremodifications to modulate the properties of MoSe2. In detail, starting from the crystal structureand optimal photocatalytic features of MoSe2, insights into photocatalytic water splitting have been highlighted. Various modes of nanostructure designs involving hydro(solvo)thermal, CVD, PVD, exfoliation,and intercalation are outlined. The lower bandgap energy is subjected to a high rate of photoinducedexcitons recombination, which reduces its photocatalytic efficiency. Therefore, modification techniquessuch as doping, heterostructure construction, and vacancy generation are presented in order to concurrentlyimprove the photocatalytic water splitting performance. Finally, the study concludes with a summaryof recent advancements and anticipated potential trends in this area to instigate further researchendeavours.
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Portfolio Composition and Valuation Effects in Emerging Market Economies
Ashima Goyal,Vaishnavi Sharma 한국국제경제학회 2018 International Economic Journal Vol.32 No.3
The increase in cross-border assets and liabilities of nations with globalization, implies small asset price and currency movements create large wealth changes. The national net external position is increasingly driven by valuation effects, which the current account does not capture. We analyze valuation effects for a group of seven emerging economies, namely Brazil, Colombia, India, Republic of Korea, Mexico, Peru and Turkey for the time period 2005:Q1-2015:Q4 by scrutinizing their external asset portfolio while controlling for country fundamentals. Both asset and liability categories of Direct Investment equity are found to positively impact valuation. Equity liabilities and debt assets of Portfolio Investment positively influence valuation. Debt liabilities of all kinds of investment negatively impact valuation. Countries with stronger currency tend to gain through valuation effects. An appreciated real effective exchange rate is associated with higher valuation gains. We also found non-linear effects of the composition of external debt portfolio by interacting external portfolio and country characteristics. The external portfolio selection of emerging economies (with more in Direct Investment equity liabilities and Portfolio Investment debt assets) in the period has shielded them from global volatility, and enabled valuation gains.
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