Synthesis of colloidal PbS nanosheets with nearly 100% success rate

MRS Advances ◽  
2017 ◽  
Vol 2 (60) ◽  
pp. 3703-3708 ◽  
Author(s):  
Shashini M Premathilaka ◽  
Zhoufeng Jiang ◽  
Antara Antu ◽  
Joey Leffler ◽  
Jianjun Hu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Success Rate ◽  
Lead Acetate ◽  
Lead Oxide ◽  
Lateral Size ◽  
Robust Method ◽  
Reaction Solution

ABSTRACTWe report a robust method by which colloidal PbS nanosheets can be synthesized with nearly 100% success rate. It is achieved by replacing the lead acetate by lead oxide for preparation of the lead precursor. Acetic acid either injected externally or produced during the reaction can significantly affect the growth of the nanosheets. The existence of water in the reaction solution makes the nanosheets smaller in lateral size while the purity of trioctylphosphine has no significant effect on the nanosheet growth.

THE SYSTEM LEAD ACETATE, ACETIC ACID, WATER1

1932 ◽  
Vol 54 (12) ◽  
pp. 4537-4544 ◽  
Author(s):  
Grady Tarbutton ◽  
Warren C. Vosburgh
Keyword(s):  
Acetic Acid ◽  
Lead Acetate

scholarly journals Pengaruh Kitosan Terhadap Kadar Residu Pb Ginjal Tikus Putih (Rattus Sp.) Jantan Yang Dipapari Plumbum Asetat

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Ulina Catarina Jeni Simatupang
Keyword(s):  
Acetic Acid ◽  
Atomic Absorption ◽  
Lead Acetate ◽  
Kidney Tissue ◽  
Chelating Agent ◽  
Kidney Damage ◽  
Isolated Kidney

The  study aimed to determine the effect of chitosan on  the kidney of rats (Rattus sp.) exposed to lead acetate. Thirty five male animals weighing 250g were divided into 7 groups:  K group as a control (without treatment), P1  received  Pb (40 mg/kg bw as lead acetate),  while P2, P3, and P4, all received Pb (40 mg/kg bw) and chitosan (0,5%, 0,75%, and 1% respectively). P5 group received only chitosan (1%) and P6 group received acetic acid. After 7 weeks of  treatment, the animals were sacrificed and the kidneys were isolated. Kidney damage was observed with residue of Pb in kidney tissue was evaluated using Atomic Absorption Spectrophotography. Chitosan able to decrease kidney damage resulted from  Pb treatment. Residue of Pb in the  kidney of rat exposed to Pb acetate was decreased after chitosan treatment. In conclusion, chitosan has the ability to reduce residue of Pb after exposed Pb. The effectiveness of chitosan as a chelating agent for Pb in the organs is important  for   further investigated. Keywords: Pb, chitosan, kidny, residual Pb,AAS

Lead acetate trihydrate precursor route to synthesize novel ultrafine lead oxide from spent lead acid battery pastes

2014 ◽  
Vol 269 ◽  
pp. 565-576 ◽  
Author(s):  
Xiaojuan Sun ◽  
Jiakuan Yang ◽  
Wei Zhang ◽  
Xinfeng Zhu ◽  
Yuchen Hu ◽  
...  
Keyword(s):  
Lead Acetate ◽  
Lead Oxide ◽  
Lead Acid Battery ◽  
Lead Acetate Trihydrate ◽  
Acetate Trihydrate ◽  
Precursor Route ◽  
Lead Acid

scholarly journals Non-surgical approach for repairing perforations of pars tensa in tympanic membrane using TCA cauterization

2019 ◽  
Vol 5 (2) ◽  
pp. 299
Author(s):  
Sushil Gaur ◽  
Monika Patel ◽  
Prince Hirdesh ◽  
Vandana Singh
Keyword(s):  
Acetic Acid ◽  
Success Rate ◽  
Tympanic Membrane ◽  
Ossicular Chain ◽  
Surgical Approaches ◽  
Cost Burden ◽  
Surgical Interventions ◽  
Pars Tensa ◽  
Tympanic Membrane Perforations ◽  
One Year

<p class="abstract"><strong>Background:</strong> Tympanic membrane perforations occurring due to mucosal COM usually require surgical interventions for repair (myringoplasty or tympanoplasty) depending on the size and site of the perforation and the ossicular chain continuity. Various studies have shown TCA cautery as an efficacious non surgical method for repairing small and medium sized TM perforations. This technique was successfully used and popularized for repairing small and medium sized perforations by Derlacki in 1953.</p><p class="abstract"><strong>Methods:</strong> In this study we included dry pars tensa perforations in 100 patients occurring due to trauma or unresolved cases after inflammation/infection of middle ear. 50% w/v trichloro acetic acid was used for a maximum number of 5 applications at the margins of the perforations which were followed up for the next one year.  </p><p class="abstract"><strong>Results:</strong> In this study, involving a total of 125 perforations (75 unilateral and 50 bilateral), success rate was high among the patients with traumatic perforations and small sized perforations while a few number of perforations only reduced in size, which were later corrected with surgical approaches (myringoplasty/tympanoplasty). The overall success rate achieved in this study was 72.16%.</p><p class="abstract"><strong>Conclusions:</strong> Though there are various materials and methods available for this procedure, the principle remains the same. This technique should be attempted for patients that fit the criteria for undergoing this procedure before being undertaken for surgical approaches to minimize the risks and cost burden associated with surgery and anesthesia.</p>

Lead Oxide Plate Precipitates from Lead Nitrate Solution

2010 ◽  
Vol 123-125 ◽  
pp. 1243-1246
Author(s):  
Gang Qiang Yang ◽  
Xiao Ping Zou ◽  
Xiang Min Meng ◽  
Jin Cheng ◽  
Xue Ming Lü ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Sodium Chloride ◽  
Lead Oxide ◽  
Nitrate Solution ◽  
Lead Nitrate ◽  
Chloride Anion ◽  
Distilled Water ◽  
Lead Monoxide ◽  
Reaction Solution ◽  
Nitrate Solutions

In this paper, a simple and controllable method to fabricate - and -PbO is reported. Lead nitrate as precursor was dissolved in 50ml distilled water, and was heated to 80oC. Sodium chloride was added into the lead nitrate aqueous solution. During the process, -PbO deposition will be obtained when we add lead nitrate solutions with KOH pellets without chloride anion. When we add lead nitrate solutions with KOH pellets with a little chloride anion, there will produce -PbO deposition. Our results indicate that the concentration of chloride anion and temperature of reaction solution affects the crystal morphologies and modifications of lead monoxide plate precipitates from lead nitrate solution and we can selectively and controllably produce - or -PbO by this way.

Effects of Reaction Parameters on the Growth and Optical Properties of PbSe Nanocrystals

2015 ◽  
Vol 34 ◽  
pp. 79-89
Author(s):  
Immaculate L.A. Ouma ◽  
Paul Mushonga ◽  
Martin O. Onani
Keyword(s):  
Optical Properties ◽  
Structural Properties ◽  
Lead Acetate ◽  
Lead Oxide ◽  
Nucleation And Growth ◽  
Growth Phases ◽  
Reaction Parameters ◽  
Reaction Conditions ◽  
Lead Source ◽  
Shape And Size

Colloidal syntheses of PbSe nanocrystals (NCs) have been widely investigated and the properties of nanocrystals have been shown to vary with reaction conditions, time, concentration and chemistry of reagents as well as the surfactants used. In this work the effects of reaction temperature, solvents, ligand purity, lead and selenium sources on the optical and structural properties of PbSe nanocrystals were investigated. PbSe NCs synthesized at 90 °C were observed to be spherical and had a narrower size distribution as compared to those synthesized at higher temperatures. 1-octadecene, trioctylphosphine and oleylamine were investigated as solvents for NC synthesis with the non-coordinating solvent octadecene showing the fastest growth rate with medium sized NCs. The coordinating solvents trioctylphosphine and oleylamine produced larger and smaller NCs respectively; this could be attributed to solvent interference during NC nucleation and growth phases. Oleate ligands were used during these syntheses and the ligand purity was not observed to have a significant effect on the NC optical and structural properties. The selenium precursor used affected the NC size and their optical properties while the lead source influenced both the NC shape and size. Lead acetate produced cubic NCs which were larger than the spherical NCs obtained when lead oxide was used.

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