scholarly journals Complexing agent study via computational chemistry for environmentally friendly silver electrodeposition and the application of a silver deposit

RSC Advances ◽  
2014 ◽  
Vol 4 (77) ◽  
pp. 40930-40940 ◽  
Author(s):  
Anmin Liu ◽  
Xuefeng Ren ◽  
Bo Wang ◽  
Jie Zhang ◽  
Peixia Yang ◽  
...  
Keyword(s):  
Computational Chemistry ◽  
Environmentally Friendly ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Silver Deposit ◽  
Silver Electrodeposition

Predicting the complexing agents used for a new environmentally friendly silver electroplating bath by computational chemistry.

scholarly journals Correction: Complexing agent study via computational chemistry for environmentally friendly silver electrodeposition and the application of a silver deposit

RSC Advances ◽  
2021 ◽  
Vol 11 (13) ◽  
pp. 7225-7225
Author(s):  
Anmin Liu ◽  
Xuefeng Ren ◽  
Bo Wang ◽  
Jie Zhang ◽  
Peixia Yang ◽  
...  
Keyword(s):  
Computational Chemistry ◽  
Environmentally Friendly ◽  
Complexing Agent ◽  
Silver Deposit ◽  
Silver Electrodeposition

Correction for ‘Complexing agent study via computational chemistry for environmentally friendly silver electrodeposition and the application of a silver deposit’ by Anmin Liu et al., RSC Adv., 2014, 4, 40930–40940, DOI: 10.1039/C4RA05869K.

Complexing agent study for environmentally friendly silver electrodeposition(ii): electrochemical behavior of silver complex

RSC Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 7348-7355 ◽  
Author(s):  
Anmin Liu ◽  
Xuefeng Ren ◽  
Jie Zhang ◽  
Deyu Li ◽  
Maozhong An
Keyword(s):  
Electrochemical Behavior ◽  
Environmentally Friendly ◽  
Silver Complex ◽  
Complexing Agent ◽  
Silver Deposition ◽  
Plating Bath ◽  
Electrochemical Behaviors ◽  
Silver Electrodeposition

Silver deposition and electrochemical behaviors of silver complex in the environmentally friendly silver plating bath were studied.

The Structural, Magnetic and Optical Properties of Ni-Mg-Zn Ferrite Prepared With Different Complexing Agents via Sol-Gel Method

2021 ◽  
Author(s):  
Yanchun Zhang ◽  
Aimin Sun ◽  
Zhaxi Suonan
Keyword(s):  
Optical Properties ◽  
Electron Microscope ◽  
Sol Gel ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Gel Method ◽  
X Ray ◽  
Sol Gel Method ◽  
Zn Ferrite ◽  
Vis Spectroscopy

Abstract Different complexing agents were used to prepare Ni-Mg-Zn ferrite with the composition formula Ni0.2Mg0.2Zn0.6Fe2O4 via sol-gel method, which included citric acid, oxalic acid, egg white and EDTA. The Ni0.2Mg0.2Zn0.6Fe2O4 ferrite with no complexing agent was also prepared as a comparison. The chemical phases of samples were analyzed by the X-ray diffraction (XRD), which indicated that samples had spinel phase structure. The lattice constants of samples are in the range of 8.3980 ~ 8.4089 Å. The composition and structure were further studied by fourier transform infrared spectroscopy (FTIR). There were two typical characteristic bands related to the stretching vibrations of spinel ferrite in FTIR spectra. Scanning electron microscope (SEM) micrographs and transmission electron microscope (TEM) images showed that the particles have the shape of spherical cube. Energy dispersive spectrometer (EDS) analyzed the elements and ingredients of samples, which included Ni, Mg, Zn, Fe and O. X-ray photoelectron spectroscopy (XPS) is used to examine further the elemental composition and chemical state of sample prepared with EDTA as complexing agent. The optical properties of samples were investigated by photoluminescence spectra and UV-Vis spectroscopy. Vibrating sample magnetometer (VSM) was used to characterize magnetic properties, hysteresis loops revealed the ferrimagnetism behavior of prepared samples.

An Assessment of Olmesartan Medoxomil Tablet by Inclusion Complex Technique

2021 ◽  
pp. 193-197
Author(s):  
Deepak Sarangi ◽  
Subhashree Mallick ◽  
Anjum Ara ◽  
Sanjeeb Kumar Sahoo ◽  
Rabinarayan Rana
Keyword(s):  
Inclusion Complex ◽  
Water Solubility ◽  
Olmesartan Medoxomil ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Angiotensin Ii Receptor ◽  
Current Effort ◽  
Ir Studies ◽  
Beta Cyclodextrin ◽  
Ft Ir

Olmesartan Medoxomil is an AT1 subtype selected angiotensin-II receptor antagonist approved for the treatment of hypertension. It has low water solubility, so the current effort is being made to enhance the solubility of the Olmesartan by inclusion complex and to incorporate them into tablets by direct compression. Complexing agent like Beta cyclodextrin and polyvinyalpyrrolidone has been used for complexation method. FT-IR studies have shown that there is no link between drugs and complexing agents. Among all methods, the inclusion complex (OLBCD 3) containing the drug: Beta cyclodextrin in a 1: 3 ratio showed rapid drug release (87.41% within 30 minutes) and post compression parameters are within limits. All the values obtained from pre compression and post compression parameters meets the legal requirements for tablets. Stability studies of batch no OLBCD 3 shows no significant change. Therefore, it can be concluded that the structure was stable.

Chemical Mechanical Polishing of Cu Pattern Wafer Based Alkaline Slurry in GLSI with R(NH2)n as Complexing Agent

2011 ◽  
Vol 236-238 ◽  
pp. 3020-3023 ◽  
Author(s):  
Yan Gang He ◽  
Xiao Wei Gan ◽  
Wei Hong ◽  
Yi Hu ◽  
Yu Ling Liu
Keyword(s):  
Reaction Mechanism ◽  
Chemical Mechanical Polishing ◽  
Mechanical Polishing ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Mechanism Analysis ◽  
Slurry Stability ◽  
Cu Cmp ◽  
Better Than

Chemical mechanical polishing (CMP) of Cu pattern wafer based alkaline slurry in GLSI with R(NH2)n as complexing agent was investigated. In Cu CMP procedure, it is necessary to minimize the surface dishing and erosion while maintaining good planarity. This requirements are met through the complexing agents. Based on the reaction mechanism analysis of Cu in alkaline slurry with R(NH2)n as complexing agent in CMP, the performance of Cu dishing and erosion were discussed. The results showed that the slurry stability can be improved obviously by the addition of R(NH2)n as complexing agent, both Cu1 and Cu2 have good dishing and erosion performance. Furthermore, the dishing condition of Cu2 (180-230nm) is better than that of Cu1 (280-370nm), and the erosion condition of Cu2 (230-260nm) is also better than that of Cu1 (450-500nm).

Effect of complexing agents on desulphurization and deashing of coal by H2O2/H2SO4 leaching

2018 ◽  
Vol 29 (7) ◽  
pp. 1142-1154
Author(s):  
Hafiza Sana ◽  
Rizwan Haider ◽  
Muhammad Usman Rahim ◽  
Shahid Munir
Keyword(s):  
Hydrogen Peroxide ◽  
Citric Acid ◽  
Phosphoric Acid ◽  
Removal Efficiency ◽  
Coal Sample ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Chemical Leaching ◽  
Optimized Conditions

The present study was aimed at investigating the effect of the addition of complexing agents on the removal efficiency of sulphur and ash contents during chemical leaching by acidified hydrogen peroxide. Representative coal sample from Lakhra was subjected to chemical leaching under various conditions of the parameters including time (60 and 120 min), temperature (25 and 50°C), complexing agents (citric acid and phosphoric acid) and the concentration of complexing agents (100 and 1000 ppm). The addition of complexing agents, i.e. citric acid and phosphoric acid imparted significant effects on improving the removal efficiency of sulphur and ash contents. Under optimized conditions, it was found out that the addition of citric acid improved the removal efficiency for sulphur from 63.88 to 83.47% and from 33.12 to 66.25% for ash. In case of phosphoric acid, the removal in sulphur and ash contents was increased from 63.77 to 80.77% and from 33.12 to 59.18%, respectively. Apparently, citric acid happened to be the most effective complexing agent, as compared to phosphoric acid. These results warrant subsequent detailed studies for further optimization of the process, including the use of some other complexing agents, as well.

Trace determination of gadolinium by conductivity-based approach

2020 ◽  
Vol 98 (10) ◽  
pp. 652-658
Author(s):  
R. Ananthanarayanan ◽  
M. Sivaramakrishna ◽  
B.S. Panigrahi
Keyword(s):  
Heavy Water ◽  
Ethylenediaminetetraacetic Acid ◽  
Limit Of Detection ◽  
Nuclear Industry ◽  
Complexing Agents ◽  
Complexing Agent ◽  
High Performing ◽  
New Class ◽  
Water Reactors

A conductivity-based technique is developed for the determination of Gd3+ in the heavy water moderators of pressurized heavy water reactors (PHWRs). The method involves monitoring extremely small shifts in conductivity, in the order of few nS/cm, due to the continuous addition of a suitable complexing agent to Gd3+ in aqueous medium. The resulting plot gives two distinct regions with vastly differing slopes. Two multidentate ligands, ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaaceticacid (DTPA), as complexing agents are compared. A high performing conductivity detector based on a new class of sensors called pulsating sensors that works entirely in the digital domain is deployed to monitor the conductivity shifts. Titration plots are studied in both H2O and D2O, and the observed difference between the plots in the two matrices is discussed in detail. Boron did not interfere in the analysis. The method was validated using the UV–vis spectrophotometric technique. The method is sensitive and rapid, as each analysis takes 3 min. The limit of detection in H2O and D2O are 1.27×10−7 mol/L and 5.1×10−7 mol/L, respectively. The precision in analysis lies between 1.9% and 5.3%. This method has important application in the nuclear industry for the routine analysis of gadolinium.

Formation and characterization of the CuIn(S,Se)2/buffer layer interface in electrodeposited solar cells

2005 ◽  
Vol 865 ◽  
Author(s):  
N. Naghavi ◽  
C. Hubert ◽  
O. Roussel ◽  
L. Sapin ◽  
M. Lamirand ◽  
...  
Keyword(s):  
Buffer Layer ◽  
Fill Factor ◽  
Open Circuit ◽  
Solution Chemistry ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Main Role ◽  
Near Surface

AbstractThis paper presents the influence of the solution chemistry of chemical bath deposition (pH and complexing agents) on the performance of CuIn(S,Se)2 cells after an initial CN treatment. It is shown that it is possible to modify the deposition conditions of the CdS by increasing the pH of the solution and by replacing the complexing agent (ammonia) by citrate ions. Both NH3 based and citrate based process give very homogenous and covering thin films. However, in the case of the citrate based process a decrease of open circuit voltage (Voc) and fill factor (FF) and thus of the cell efficiencies is observed. This points out that the main role of the buffer layer is not only related to the specific properties of the CdS itself but also to the near surface modifications of the CuIn(S,Se)2 caused by the presence of the complexing agent in the bath.

Electrodeposition of Copper-Indium-Diselenide (CuInSe2) Thin Films

2011 ◽  
Vol 214 ◽  
pp. 378-382 ◽  
Author(s):  
Ming Jer Jeng ◽  
Wen Kai Lei
Keyword(s):  
Ph Value ◽  
Sodium Dodecyl ◽  
Selenium Dioxide ◽  
Indium Content ◽  
Atomic Ratio ◽  
Complexing Agents ◽  
Complexing Agent ◽  
Deposition Parameters ◽  
Copper Indium ◽  
Electrolyte Ph

The electrodeposited CuInSe2 films were investigated in this paper. The deposition parameters of various solution concentrations, applied potential, pH value and complexing agent were examined to characterize film quality. The electrolyte solution was formed by mixing an appropriate proportion of copper sulfate, indium sulfate and selenium dioxide. Sodium citrate was used as complexing agent. Citric and sulfuric acids were used for adjusting electrolyte pH value. The experimental results revealed that the deposited and annealed CIS films have an atomic ratio of [Cu]：[In]：[Se] = 26.94：26.74：46.31. It is near to the stoichiometry of an atomic ratio ([Cu]：[In]：[Se] = 1：1：2). Unfortunately, this film has a poor adhesion problem. In order to overcome the adhesion problem, the triethanolamine and sodium dodecyl sulfate are used as complexing agents and wetting agents, respectively. A good adhesion was obtained. However, these additives result in a shortcoming of insufficient indium content in the formation film.

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