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Adsorption of light mercaptans over metal (Co, Cu, Fe, Ni) doped hexagonal boron nitride nanosheets: a first-principles study. J Mol Model 2019; 25:138. [DOI: 10.1007/s00894-019-4030-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Accepted: 04/04/2019] [Indexed: 10/26/2022]
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2
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Al-Shawafi WM, Salah N, Alshahrie A, Ahmed YM, Moselhy SS, Hammad AH, Hussain MA, Memic A. Size controlled ultrafine CeO 2 nanoparticles produced by the microwave assisted route and their antimicrobial activity. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2017; 28:177. [PMID: 28956214 DOI: 10.1007/s10856-017-5990-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 09/17/2017] [Indexed: 06/07/2023]
Abstract
Cerium oxide (CeO2) nanoparticles (NPs) have a wide range of biological and biomedical applications. This work describes a new methodology for producing ultrafine, highly uniform NPs with controlled sizes using the chemical microwave assisted route. The size of CeO2-NPs decreased from 10 to 5 nm by increasing the molar ratio of cerium nitrate Ce(NO3)3.(6H2O) to that of hexamethylenetetramine (C6H12N) from 1:20 to 20:20. Detailed information about their structural characterization was obtained from the XRD, UV-visible, photoluminescence, Raman spectroscopy, SEM, TEM and AFM. These CeO2-NPs were tested as antimicrobial agent against Gram-negative (Escherichia.coli), Gram-positive (Bacillus.subtilis) bacteria and yeast (Saccharomyces cerevisiae). The obtained results showed significant inhibition of these strain even at low concentration of CeO2-NPs. The CeO2-NPs with the molar ratio 5:20 had the most effective inhibition against E.coli (~70%) at a concentration of 20 µL. The CeO2-NPs with the ratio 12:20 were found to be the most effective against B.subtilis (inhibition ~68%). On the other hand, CeO2-NPs synthesized with the 20:20 molar ratio caused the highest inhibition for S. cerevisiae (~60%). It is observed that at higher NPs concentration (i.e., >20 µL) the inhibition of these strains decreased. The antimicrobial activity may be attributed to the penetrating power of CeO2-NPs size beside the generated oxygen species radicals that caused inhibition of bacterial growth.
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Affiliation(s)
- Waleed M Al-Shawafi
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Department of Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Numan Salah
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - Ahmed Alshahrie
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Department of Physics, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Youssri M Ahmed
- Department of Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
- Microbial Biotechnology Department, National Research Center, Dokki‒Cairo, Egypt
| | - Said S Moselhy
- Department of Biochemistry, Faculty of Sciences, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Ahmed H Hammad
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Electron Microscope and Thin Films Department, Physics Division, National Research Centre, Dokki, Giza, Egypt
| | - Mohammad Asif Hussain
- Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Adnan Memic
- Center of Nanotechnology, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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3
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Highly selective synthesis for 4,4′-bisphenol F from phenol and formaldehyde catalyzed with [C4mim][HSO4] ionic liquid. Chin J Chem Eng 2016. [DOI: 10.1016/j.cjche.2016.02.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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4
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Ganguly SK, Varun N, Sharma A, Gill K, Gupta P, Jain SL, Pellegrini LA. Mass Transfer and Hydrodynamic Aspects of Kinetics Studies in Light Oil Sweetening: A Review. CHEMBIOENG REVIEWS 2016. [DOI: 10.1002/cben.201500028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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5
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P. M, Venkateswara Raju C, C. S, G. R, D. S, P. R, J. W, Rajendran S, Alwarappan S. Cerium doped nickel-oxide nanostructures for riboflavin biosensing and antibacterial applications. NEW J CHEM 2016. [DOI: 10.1039/c5nj03539b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrochemical detection of riboflavin and antibacterial activities of Ce doped NiO nanostructures synthesized by the mild temperature wet chemistry approach.
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Affiliation(s)
- Muthukumaran P.
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - Chikkili Venkateswara Raju
- Electrodics and Electrocatalysis Division
- CSIR – Central Electrochemical Research Institute Karaikudi
- India
| | - Sumathi C.
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - Ravi G.
- Department of Biotechnology
- DDE (Science Wing)
- Alagappa University
- Karaikudi
- India
| | - Solairaj D.
- Photonic Crystals Lab
- Department of Physics
- Alagappa University
- Karaikudi-630004
- India
| | - Rameshthangam P.
- Photonic Crystals Lab
- Department of Physics
- Alagappa University
- Karaikudi-630004
- India
| | - Wilson J.
- Polymer Electronics Lab
- Department of Bioelectronics and Biosensors
- Alagappa University
- Karaikudi-630004
- India
| | - Sathish Rajendran
- Bio-Electrochemistry Group
- CSIR – Central Electrochemical Research Institute
- Karaikudi 630 003
- India
| | - Subbiah Alwarappan
- Bio-Electrochemistry Group
- CSIR – Central Electrochemical Research Institute
- Karaikudi 630 003
- India
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6
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Drinking Water and Sanitation in Central America: Challenges, Perspectives, and Alternative Water Treatment. ACTA ACUST UNITED AC 2015. [DOI: 10.1021/bk-2015-1206.ch004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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7
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Singh S, Srivastava VC, Mandal TK. Treatment of fertilizer industry wastewater by catalytic peroxidation process using copper-loaded SBA-15. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2015; 50:1468-78. [PMID: 26325662 DOI: 10.1080/10934529.2015.1074481] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The present study reports use of the catalytic peroxidation (CPO) method for treatment of actual fertilizer industry wastewater (FIW) by using copper-loaded Santa Barbara amorphous-15 (Cu/SBA-15) catalyst. FIW consists of toxic nitrogenous and phosphorus containing compounds that are not easily degraded by the conventional physicochemical and biological treatment methods. In the present study, Box-Behnken (BB) experimental design methodology was used for optimization of three independent parameters namely catalytic dose (m), initial pH (pHo), and H2O2 concentration. Maximum 83% COD removal was obtained at m = 4.5 g L(-1), pHo = 9.2 and H2O2 concentration = 2.0 mL L(-1). Wastewater and catalyst recovered at optimum treatment condition were characterized by various techniques. UV-visible and Fourier transform infrared (FTIR) techniques were used for understanding the treatment mechanism. Textural and thermogravimetric (TGA/DTA) analysis were used for determining the characteristic of catalyst before and after treatment. The stability and performance of the Cu/SBA-15 catalyst was also determined by using the reusability tests.
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Affiliation(s)
- Seema Singh
- a Department of Chemical Engineering , Indian Institute of Technology , Roorkee , Uttarakhand , India
| | - Vimal Chandra Srivastava
- a Department of Chemical Engineering , Indian Institute of Technology , Roorkee , Uttarakhand , India
| | - Tapas Kumar Mandal
- b Department of Chemistry , Indian Institute of Technology , Roorkee , Uttarakhand , India
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8
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Vik CB, Solsvik J, Hillestad M, Jakobsen HA. Modeling of a Slurry Bubble Column Reactor for the Production of Biofuels via the Fischer-Tropsch Synthesis. Chem Eng Technol 2015. [DOI: 10.1002/ceat.201400647] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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9
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Arumugam A, Karthikeyan C, Haja Hameed AS, Gopinath K, Gowri S, Karthika V. Synthesis of cerium oxide nanoparticles using Gloriosa superba L. leaf extract and their structural, optical and antibacterial properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 49:408-415. [PMID: 25686966 DOI: 10.1016/j.msec.2015.01.042] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 12/10/2014] [Accepted: 01/08/2015] [Indexed: 10/24/2022]
Abstract
CeO2 nanoparticles (NPs) were green synthesized using Gloriosa superba L. leaf extract. The synthesized nanoparticles retained the cubic structure, which was confirmed by X-ray diffraction studies. The oxidation states of the elements (C (1s), O (1s) and Ce (3d)) were confirmed by XPS studies. TEM images showed that the NPs possessed spherical shape and particle size of 5nm. The Ce-O stretching bands were observed at 451cm(-1) and 457cm(-1) from the FT-IR and Raman spectra respectively. The band gap of the CeO2 NPs was estimated as 3.78eV from the UV-visible spectrum. From the photoluminescence measurements, the broad emission composed of eight different bands were found. The antibacterial studies performed against a set of bacterial strains showed that Gram positive (G+) bacteria were relatively more susceptible to the NPs than Gram negative (G-) bacteria. The toxicological behavior of CeO2 NPs was found due to the synthesized NPs with uneven ridges and oxygen defects in CeO2 NPs.
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Affiliation(s)
- Ayyakannu Arumugam
- Department of Nanoscience and Technology, Alagappa University, Karaikudi 630 004, Tamil Nadu, India.
| | - Chandrasekaran Karthikeyan
- PG and Research Department of Physics, Jamal Mohamed College, Tiruchirappalli 620 020, Tamil Nadu, India
| | | | - Kasi Gopinath
- Department of Nanoscience and Technology, Alagappa University, Karaikudi 630 004, Tamil Nadu, India
| | - Shanmugam Gowri
- Department of Nanoscience and Technology, Alagappa University, Karaikudi 630 004, Tamil Nadu, India
| | - Viswanathan Karthika
- Department of Nanoscience and Technology, Alagappa University, Karaikudi 630 004, Tamil Nadu, India
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10
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Jagati VS, Srivastava VC, Prasad B. Multi-Response Optimization of Parameters for the Electrocoagulation Treatment of Electroplating Wash-Water using Aluminum Electrodes. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2014.954672] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Guan X, Li Z, Wang L, Cheng Y, Li X. CFD Simulation of Bubble Dynamics in Bubble Columns with Internals. Ind Eng Chem Res 2014. [DOI: 10.1021/ie502666y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaoping Guan
- Department of Chemical and
Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Zhaoqi Li
- Department of Chemical and
Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Lijun Wang
- Department of Chemical and
Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Youwei Cheng
- Department of Chemical and
Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
| | - Xi Li
- Department of Chemical and
Biological Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, P.R. China
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12
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Singh S, Srivastava VC, Mall ID. Electrochemical Treatment of Dye Bearing Effluent with Different Anode–Cathode Combinations: Mechanistic Study and Sludge Analysis. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4042005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Seema Singh
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Vimal Chandra Srivastava
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
| | - Indra Deo Mall
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India
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13
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van Baten J, Pons M. CAPE-OPEN: Interoperability in Industrial Flowsheet Simulation Software. CHEM-ING-TECH 2014. [DOI: 10.1002/cite.201400009] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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14
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Thakur C, Srivastava VC, Mall ID. Aerobic degradation of petroleum refinery wastewater in sequential batch reactor. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2014; 49:1436-1444. [PMID: 25072776 DOI: 10.1080/10934529.2014.928557] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The aim of the present work was to study the effect of various parameters affecting the treatment of raw petroleum refinery wastewater (PRW) having chemical oxygen demand (COD) of 350 mg L(-1) and total organic carbon (TOC) of 70 mg L(-1) in sequential batch reactor (SBR). Effect of hydraulic retention time (HRT) was studied in instantaneous fill condition. Maximum COD and TOC removal efficiencies were found to be 80% and 84%, respectively, for fill phase of 2 h and react phase of 2 h with fraction of SBR being filled with raw PRW in each cycle being 0.4. Effect of parameters was studied in terms of settling characteristic of treated slurry. Kinetics of treatment process has been studied. FTIR and UV-visible analysis of PRW before and after treatment have been performed so as to understand the degradation mechanism.
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Affiliation(s)
- Chandrakant Thakur
- a Department of Chemical Engineering, Indian Institute of Technology , Roorkee , Uttarakhand , India
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15
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Cho JH, Picraux ST. Enhanced lithium ion battery cycling of silicon nanowire anodes by template growth to eliminate silicon underlayer islands. NANO LETTERS 2013; 13:5740-5747. [PMID: 24144166 DOI: 10.1021/nl4036498] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
It is well-known that one-dimensional nanostructures reduce pulverization of silicon (Si)-based anode materials during Li ion cycling because they allow lateral relaxation. However, even with improved designs, Si nanowire-based structures still exhibit limited cycling stability for extended numbers of cycles, with the specific capacity retention with cycling not showing significant improvements over commercial carbon-based anode materials. We have found that one important reason for the lack of long cycling stability can be the presence of milli- and microscale Si islands which typically form under nanowire arrays during their growth. Stress buildup in these Si island underlayers with cycling results in cracking, and the loss of specific capacity for Si nanowire anodes, due to progressive loss of contact with current collectors. We show that the formation of these parasitic Si islands for Si nanowires grown directly on metal current collectors can be avoided by growth through anodized aluminum oxide templates containing a high density of sub-100 nm nanopores. Using this template approach we demonstrate significantly enhanced cycling stability for Si nanowire-based lithium-ion battery anodes, with retentions of more than ~1000 mA·h/g discharge capacity over 1100 cycles.
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Affiliation(s)
- Jeong-Hyun Cho
- The Center for Integrated Nanotechnologies, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
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