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Related Concept Videos

Electrodeposition01:08

Electrodeposition

1.9K
Electrodeposition is a technique used to separate an analyte from interferents by electrochemical processes. Here, the analyte is a metal ion that can be deposited on an electrode immersed in the sample solution. The electrochemical setup consists of an anode and a cathode. When an electric current is applied to the setup, oxidation occurs at the anode. At the cathode, which consists of a large metal surface, metal ions undergo reduction and deposit onto the surface.
Electrodeposition can...
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Washing, Drying, and Ignition of Precipitates00:52

Washing, Drying, and Ignition of Precipitates

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After filtration, the precipitate is washed to remove coprecipitated impurities and any remaining mother liquor. Colloidal precipitates, such as silver chloride, are washed with an electrolyte (such as dilute nitric acid) to prevent the peptization of the precipitate. In the case of slightly soluble precipitates, the wash solution contains a common ion to reduce solubility. Lead sulfate, which is slightly soluble in water, is washed with dilute sulfuric acid. Similarly, wash solutions may be...
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Gravimetry: Inorganic And Organic Precipitating Agents00:49

Gravimetry: Inorganic And Organic Precipitating Agents

7.4K
In gravimetry, the precipitant is chosen carefully to obtain a pure solid that can be easily filtered. Common inorganic precipitants can be used to determine several cations and anions. In some cases, the formation of the same precipitate can be used to determine the cation and the anion. For example, the reaction of barium and chromate ions to give barium chromate is used to determine both barium and chromate. However, precipitates such as hydroxides, oxalates, and metal ammonium phosphates...
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Colloidal precipitates01:09

Colloidal precipitates

6.8K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
1.9K
Types of Coprecipitation01:10

Types of Coprecipitation

7.0K
Coprecipitation is the contamination of a precipitate by otherwise soluble species and occurs via different processes. In colloidal precipitates, coprecipitation occurs via surface adsorption. For instance, barium sulfate has a primary layer of adsorbed barium ions and a secondary layer of nitrate counterions. This results in contamination of the precipitate by barium nitrate.
Sometimes, ions in a crystal lattice can undergo isomorphous replacement by inclusions of similar charge and size. For...
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Related Experiment Video

Updated: Apr 1, 2026

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
08:49

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films

Published on: December 4, 2014

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Atomic Layer Deposition from Dissolved Precursors.

Yanlin Wu1, Dirk Döhler1, Maïssa Barr2

  • 1Department of Chemistry and Pharmacy, Friedrich-Alexander University of Erlangen-Nürnberg , Egerlandstrasse 1, D-91058 Erlangen, Germany.

Nano Letters
|September 30, 2015
PubMed
Summary
This summary is machine-generated.

We developed a new thin film coating method called Solution Atomic Layer Deposition (sALD). This technique uses liquid precursors, enabling conformal coating of deep pores and overcoming limitations of traditional methods.

Keywords:
Atomic layer depositionLBLSILARmagnesium oxidemicrofluidicthin films

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Nanotechnology

Background:

  • Atomic Layer Deposition (ALD) is a key technique for thin film fabrication.
  • Traditional ALD requires volatile and thermally stable gaseous precursors.
  • Coating complex 3D structures like deep pores remains challenging for conventional ALD.

Purpose of the Study:

  • To introduce a novel thin film deposition technique adapting ALD principles for liquid precursors.
  • To demonstrate the feasibility and advantages of Solution ALD (sALD).
  • To explore sALD for conformal coating of challenging geometries.

Main Methods:

  • Transferred ALD principles from gas phase to liquid phase precursors.
  • Developed a "Solution ALD" (sALD) process.
  • Utilized a Grignard reagent hydrolysis for Magnesium Oxide (MgO) sALD.

Main Results:

  • Demonstrated that established ALD reactions perform similarly in solution.
  • Achieved conformal coating of deep pores using sALD.
  • Successfully established a MgO sALD procedure.

Conclusions:

  • Solution ALD (sALD) is a viable alternative to traditional ALD.
  • sALD overcomes precursor limitations (volatility, thermal stability).
  • sALD enables conformal coating of intricate structures like deep pores.