http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Suresh K. Bhargava (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Das, Biraj,Sharma, Mukesh,Deka, Biplab K.,Hazarika, Ankita,Park, Young-Bin,Hazarika, Anil,Bhargava, Suresh K.,Bania, Kusum K. Elsevier 2018 Journal of environmental chemical engineering Vol.6 No.2
<P><B>Abstract</B></P> <P>Ag/AgCl/V<SUB>2</SUB>O<SUB>5</SUB> nanocatalysts with one dimensional (1D) architecture was synthesized in carboxylic acid functionalized multi-walled carbon nanotubes for methylene blue dye degradation. The growth of uniformly distributed nanoparticles along the carbon-nanotubes was revealed from high resolution transmission electron microscopy and atomic force microscopy analyses. Raman spectroscopy and transmission electron microscopy analyses also confirmed for the creation of defects in the multi-walled carbon nanotube. The hybrid nanocomposite appeared as a suitable photocatalyst for degradation of methylene blue dye absorbing the light in the visible range of solar spectrum. The presence of interactions within the nanoparticles and with the nanotubes was believed to enhance the photo-oxidation process. The creation of defects in the carbon nanotube on modification with Ag/AgCl/V<SUB>2</SUB>O<SUB>5</SUB> improved the photocatalytic activity by enhancing the photoelectron transfer process. About ∼90% of the total organic carbon of the dye molecule was found to decompose into CO<SUB>2</SUB>, H<SUB>2</SUB>O and inorganic ions within 25 min under sunlight.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ag/AgCl/V<SUB>2</SUB>O<SUB>5</SUB> with 1D architecture is synthesized in Multiwalled Carbon Nanotube. </LI> <LI> Ag/AgCl/V<SUB>2</SUB>O<SUB>5</SUB>-MWCNT appeared as suitable photocatalyst absorbing visible light of solar spectrum. </LI> <LI> Creation of defects in MWCNT enhanced the photocatalytic ability of the nanomaterial. </LI> <LI> The hybrid nanocomposite decompose methylene blue dye with high efficiency within 25 min under sunlight. </LI> <LI> The photocatalyst was recyclable for three consecutive cycles. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P> <P>Complete mineralization of MB dye with Ag/AgCl/V<SUB>2</SUB>O<SUB>5</SUB>-MWCNT nanocomposite under sun light.</P>
-
Sharma, Mukesh,Das, Biraj,Sharma, Mitu,Deka, Biplab K.,Park, Young-Bin,Bhargava, Suresh K.,Bania, Kusum K. American Chemical Society 2017 ACS APPLIED MATERIALS & INTERFACES Vol.9 No.40
<P>Solid-state grinding of palladium and copper salts allowed the growth of palladium/copper oxide interface at the zeolite-Y surface. The hybrid nanostructured material was used as reusable heterogeneous catalyst for selective oxidation of various benzyl alcohols. The large surface area provided by the zeolite-Y matrix highly influenced the catalytic activity, as well as the recyclability of the synthesized catalyst. Impregnation of PdO-CuO nanoparticles on zeolite crystallite leads to the generation of mesoporous channel that probably prevented the leaching of the metal-oxide nanoparticles and endorsed high mass transfer. Formation of mesoporous channel at the external surface of zeolite-Y was evident from transmission electron microscopy and surface area analysis. PdO-CuO nanoparticles were found to be within the range of 2-5 nm. The surface area of PdO-CuO-Y catalyst was found to be much lower than parent zeolite-Y. The decrease in surface area as well as the presence of hysteresis loop in the Nradsoprtion isotherm further suggested successful encapsulation of PdO-CuO nanoparticles via the mesoporous channel formation. The high positive shifting in binding energy in both Pd and Cu was attributed to the influence of zeolite-Y framework on lattice contraction of metal oxides via confinement effect. PdO-CuO-Y catalyst was found to oxidize benzyl alcohol with 99% selectivity. On subjecting to microwave irradiation the same oxidation reaction was found to occur at ambient condition giving same conversion and selectivity.</P>
-
Sameena Begum,Vijayalakshmi Arelli,Gangagni Rao Anupoju,Sridhar S,Suresh K. Bhargava,Nicky Eshtiaghi 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.90 No.-
Liquid–liquid extraction of volatile fatty acids (VFA) from landfill leachate (LL) as well as syntheticsolution (SS) whose concentration varied from 0.2 to 1 mol/L was investigated. The impact of extractantand feed VFA concentration on extraction efficiency (EE), distribution ratio (KD) and loading ratio (z) withthe help of statistical analysis and process optimization using response surface methodology ispresented. Physical extraction of VFA from SS using seven different diluents was performed to choose thebest diluent. Reactive extraction of VFA was investigated with 10–50% (v/v) trioctylamine (TOA) andtributylphosphate (TBP) as extractants in 1-Octanol. Reactive extraction of VFA results disclosedenhancement of EE due to the synergistic chemical interactions between extractant and diluent. Majorityof the acid extractant complexes formed were 1:1 with TBP while 1:1, 2:1 and 3:1 with TOA as verified byz > 0.5 The optimal extractant concentration for TOA and TBP was found to be 37.8% and 39.09% at a feedconcentration of 0.67 mol/L and 0.81 mol/L for SS respectively to achieve maximum EE of 91% while it was29.3% and 36.2% at 0.2 mol/L for LL to achieve EE of 52% and 57% correspondingly.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
