Design of a Cu(i)/C-doped boron nitride electrocatalyst for efficient conversion of CO2into acetic acid

2017 ◽  
Vol 19 (9) ◽  
pp. 2086-2091 ◽  
Author(s):  
Xiaofu Sun ◽  
Qinggong Zhu ◽  
Xinchen Kang ◽  
Huizhen Liu ◽  
Qingli Qian ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Boron Nitride ◽  
Electrochemical Reduction ◽  
High Performance ◽  
Efficient Conversion

Cu(i) complex/BN-Cxcomposites exhibited high performance for electrochemical reduction of CO2to acetic acid in a [Emim]BF4-LiI-water electrolyte.

scholarly journals About the possibility of creating a high-performance sensor based on boron nitride nanotubes

2020 ◽  
Author(s):  
N. P. Boroznina ◽  
M. A. Vdovin ◽  
I. V. Zaporotskova ◽  
S. V. Boroznin ◽  
P. A. Zaporotskov
Keyword(s):  
Boron Nitride ◽  
High Performance ◽  
Boron Nitride Nanotubes

Porous boron nitride: A novel metal-free cataluminescence material for high performance H2S sensing

2021 ◽  
Vol 332 ◽  
pp. 129512
Author(s):  
Yingman Bian ◽  
Li Li ◽  
Hongjie Song ◽  
Yingying Su ◽  
Yi Lv
Keyword(s):  
Boron Nitride ◽  
High Performance ◽  
Metal Free

scholarly journals A validated quantification of triclosan in toothpaste using high-performance thin-layer chromatography and a 48-bit fatbed scanner

2021 ◽  
Author(s):  
Barbara Anders ◽  
Sabrina Doll ◽  
Bernd Spangenberg
Keyword(s):  
Acetic Acid ◽  
Thin Layer ◽  
Thin Layer Chromatography ◽  
High Performance ◽  
Detection System ◽  
Flatbed Scanner ◽  
Butyl Ether ◽  
Quantification Method ◽  
Direct Measurements ◽  
Layer Chromatography

AbstractWe present a densitometric quantification method for triclosan in toothpaste, separated by high-performance thin-layer chromatography (HPTLC) and using a 48-bit flatbed scanner as the detection system. The sample was band-wise applied to HPTLC plates (10 × 20 cm), with fluorescent dye, Merck, Germany (1.05554). The plates were developed in a vertical developing chamber with 20 min of chamber saturation over 70 mm, using n-heptane–methyl tert-butyl ether–acetic acid (92:8:0.1, V/V) as solvent. The RF value of triclosan is hRF = 22.4, and quantification is based on direct measurements using an inexpensive 48-bit flatbed scanner for color measurements (in red, green, and blue) after plate staining with 2,6-dichloroquinone-4-chloroimide (Gibbs' reagent). Evaluation of the red channel makes the measurements of triclosan very specific. For linearization, an extended Kubelka–Munk expression was used for data transformation. The range of linearity covers more than two orders of magnitude and is between 91 and 1000 ng. The separation method is inexpensive, fast and reliable.

Inductive Effect as a Universal Concept to Design Efficient Catalysts for CO2 Electrochemical Reduction: Electronegativity Difference Makes Difference

2021 ◽  
Author(s):  
Huihuang Chen ◽  
Weng Fu ◽  
Zhigang Geng ◽  
Jie Zeng ◽  
Bo Yang
Keyword(s):  
Electrochemical Reduction ◽  
Energy Supply ◽  
Environmental Remediation ◽  
High Performance ◽  
Inductive Effect ◽  
Great Promise ◽  
Electronegativity Difference

CO2 electrochemical reduction (CO2ER) into valuable chemical feedstocks holds great promise for energy supply and environmental remediation but remains a challenge due to the lack of high-performance electrocatalysts. Inductive effect,...

Characteristics of Piperine Solubility in Multiple Solvent

2011 ◽  
Vol 236-238 ◽  
pp. 2495-2498 ◽  
Author(s):  
Xue Song Huang ◽  
Xian Zhe Lin ◽  
Mo Ting Guo ◽  
Ya Zou
Keyword(s):  
Experimental Data ◽  
High Performance Liquid Chromatography ◽  
Acetic Acid ◽  
High Performance ◽  
Authentic Sample ◽  
Allometric Model ◽  
Experiment Data ◽  
Reverse Phase ◽  
Ethanol Acetic Acid ◽  
Acetic Acid Water

The solution of piperine in multiple solvent including ethanol, acetic acid, water and HCl were investigated to extract more piperine from piper fruit. Piperine was determined by reverse phase high-performance liquid chromatography with Diamonsil column (C18,5 μm ,250 mm×4. 6 mm) at 343 nm. Experiment data were simulated by Allometric model and the formula is Z=0.9+ 4.54×10-10×x5.675+1.8029×y2.12848+2.37×10-10×x5.675×y2.12848(Z:sample solution,mol/mL,x: the percentage of ethanol’s volume, ml/100mL,y: the acetic acid in the authentic sample solution, g/100mL), the adj·R2=0.997, the comparative deviation less than 2%. These results are good in agreement with experimental data. It reveals that the model can meet the requirements of the selection and design in extracting piperine from piper fruit.

scholarly journals 325 INSULIN-LIKE GROWTH FACTOR-I CONCENTRATIONS IN OVIDUCT FLUID OF SUPEROVULATED EWES DURING THE PERI-OVULAR PERIOD

2005 ◽  
Vol 17 (2) ◽  
pp. 313
Author(s):  
M.A. Kakar ◽  
S. Maddocks ◽  
M.F. Lorimer ◽  
D.O. Kleemann ◽  
S.K. Walker
Keyword(s):  
Acetic Acid ◽  
Liquid Chromatography ◽  
Growth Factor ◽  
High Performance ◽  
Enzyme Linked Immunosorbent Assay ◽  
Research Station ◽  
Insulin Like Growth Factor ◽  
Igf I ◽  
Oviduct Fluid ◽  
Oviductal Fluid

This study examined the concentrations of insulin-like growth factor-1 (IGF-1) in oviduct fluid during the peri-ovular period as a reference for the establishment of optimal in vitro culture conditions for sheep embryos. Six mature ewes (4–5 years, 58–67 kg) of comparable body condition were fed a standard diet for two weeks before the start of fluid collection. Ewes were superovulated using conventional treatment involving a progestagen, FSH, and GnRH treatment. Oviducts were catheterized four days (which is sufficient time to recover from surgery) before collection of oviductal fluid, which started one day (Day 1) before the time of ovulation (Day 0) and continued until five days later (Day 5). Oviductal fluid was acidified by diluting into 0.8 M acetic acid/0.2 M trimethylamine, pH 2.8, mixed, and incubated to dissociate IGFs from IGF-binding proteins (IGFBPs). Following incubation, acidified fluid was centrifuged at 10,000g through a 0.1-mm Micro-spin centrifuge filter; the filtrate transferred to glass high-performance liquid chromatography (HPLC) vials. IGFs and IGFBPs were separated from one another by high-performance size-exclusion liquid chromatography using a Protein-Pak 125 column (Waters Corporation, Milford, MA, USA) and 0.2 M acetic acid, 0.05 M trimethylamine, pH 2.8, at a flow rate of 1 mL/min. Oviductal fluid IGF-I was collected in a single 2-mL fraction directly from the HPLC and its concentration measured by an IGF-I-specific enzyme-linked immunosorbent assay (Diagnostic Systems Laboratories, Inc. Webster, TX, USA). The data were analyzed by analysis of variance. The non-superovulation group had significantly higher concentrations of oviductal IGF-I compared with the superovulation group. In the superovulated group, there was, however, a significant effect of day on the oviductal fluid IGF-I concentration (P < 0.01) such that the concentrations of IGF-I first increased for three days and then decreased for the remaining four days. In the non-superovulation group, there was no significant two-way interaction between ovulation and day. It can be concluded that the levels of IGF-I increase over time and then decrease. Authors express thanks to the help of Jenn Skye and Hemish Turretfield Research Station SA.

scholarly journals Determination of dimethoate, 2,4-dichlorophenoxy acetic acid, mecoprop and linuron pesticides in environmental waters in Republic of Macedonia by high performance liquid chromatography

2008 ◽  
Vol 27 (1) ◽  
pp. 25 ◽  
Author(s):  
Aleksandra Nestorovska-Krsteska ◽  
Meri Mirčeska ◽  
Jean-Jacques Aaron ◽  
Zoran Zdravkovski
Keyword(s):  
Acetic Acid ◽  
Solid Phase Extraction ◽  
High Performance ◽  
Solid Phase ◽  
Sampling Period ◽  
Phase Extraction ◽  
Environmental Waters ◽  
Spe Method ◽  
Dichlorophenoxy Acetic Acid

An HPLC-UVDAD method for determination of dimethoate, 2,4-dichlorophenoxy acetic acid (2,4-D), mecoprop (MCPP) and linuron in environmental waters was developed. The water samples were concentrated and extracted by a solid phase extraction (SPE) method on Bond Elut PPL cartridges. After extraction the investigated compounds were separated on Stability RP Pesticides chromatographic column using mobile phase composed of acetonitrile- water-acetic acid in volume fractions of 39:59:2 and flow rate of 0.7 mL/min. Ultraviolet absorption detection was carried out for dimethoate, 2,4-D and MCPP at 229 nm, and for linuron at 249 nm. Recoveries made from 500 mL of drinking waters using solid phase extraction ranged between 64.3–92.1 %. The method was applied to environmental waters in Macedonia that receive runoffs from agriculture lands. The levels of pesticides under study ranged between 0.31 μg/L and 7.05 μg/L, depending on the compound and sampling period.

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