Silver telluride: Difference between revisions

| Verifiedfields = changed

| Watchedfields = changed

| verifiedrevid = 443398434

| ImageFile = Ag2Te structure.png

| CASNo_Ref = {{cascite|correct|??}}

| CASNo = 12002-99-2

| PubChem = 6914515

| InChI = 1S/2Ag.Te

| InChIKey = YRXWPCFZBSHSAU-UHFFFAOYSA-N

| SMILES = [Ag].[Ag].[Te]

| Density = 8.318 g/cm³

| MeltingPtC = 955

| RefractIndex = 3.4

Silver telluride is a [[semiconductor]] which can be doped both n-type and p-type. Stoichiometric Ag₂Te has n-type conductivity. On heating silver is lost from the material.

[[Non-stoichiometric]] silver telluride has shown [[Extraordinary Magnetoresistance|extraordinary magnetoresistance]].

==Synthesis==

Porous silver telluride (AgTe) is synthesized by an electrochemical deposition method. The experiment can be performed using a potentiostat and a three-electrode cell with 200 mL of 0.5 M sulfuric acid electrolyte solution containing Ag nanoparticles at room temperature. Then a silver paste used in the tungsten ditelluride (WTe₂) attachment leach into the electrolyte which causes small amounts of Ag to dissolve in the electrolyte. The electrolyte was stirred by a magnetic bar to remove hydrogen bubbles. A silver- silver chloride electrode and a platinum wire can be used as reference and counter electrodes. All the potentials can be measured against the reference electrode, and it was calibrated using the equation ERHE = EAg/AgCl + .059 pH + .197. In order to grow the porous AgTe, the WTe₂ was treated using multiple cyclic voltammetry between -1.2 and 0 volts with a scan rate of 100 mV/s.<ref>{{Cite journal |last1=Kwon |first1=Hagyeong |last2=Bae |first2=Dongyeon |last3=Won |first3=Dongyeun |last4=Kim |first4=Heeju |last5=Kim |first5=Gunn |last6=Cho |first6=Jiung |last7=Park |first7=Hee Jung |last8=Baik |first8=Hionsuck |last9=Jeong |first9=Ah Reum |last10=Lin |first10=Chia-Hsien |last11=Chiang |first11=Ching-Yu |last12=Ku |first12=Ching-Shun |last13=Yang |first13=Heejun |last14=Cho |first14=Suyeon |date=2021-04-27 |title=Nanoporous Silver Telluride for Active Hydrogen Evolution |url=https://pubs.acs.org/doi/10.1021/acsnano.0c09517 |journal=ACS Nano |language=en |volume=15 |issue=4 |pages=6540–6550 |doi=10.1021/acsnano.0c09517 |pmid=33784072 |s2cid=232429859 |issn=1936-0851}}</ref>

Glutathione coated Ag₂Te Nanoparticles can be synthesized by preparing a 9 mL solution containing 10 mM AgNO₃, 5mM Na₂TeO₃, and 30 mM glutathione. Place that solution in an ice bath. N₂H₄ was added to the solution and the reaction is allowed to proceed for 5 min under constant stirring. Then the nanoparticles are washed three times by a way of centrifugation, after the three washes the nanoparticles are suspended in PBS and washed again with that same method.<ref>{{Cite journal |last1=Nieves |first1=Lenitza M. |last2=Dong |first2=Yuxi C. |last3=Rosario-Berríos |first3=Derick N. |last4=Mossburg |first4=Katherine |last5=Hsu |first5=Jessica C. |last6=Cramer |first6=Gwendolyn M. |last7=Busch |first7=Theresa M. |last8=Maidment |first8=Andrew D. A. |last9=Cormode |first9=David P. |date=2022-08-03 |title=Renally Excretable Silver Telluride Nanoparticles as Contrast Agents for X-ray Imaging |journal=ACS Applied Materials & Interfaces |language=en |volume=14 |issue=30 |pages=34354–34364 |doi=10.1021/acsami.2c06190 |issn=1944-8244 |pmc=9482380 |pmid=35867906 }}</ref>

* {{cite journal|doi=10.1023/A:1020512918319|title=Phase Transition of Ag_Enriched Ag₂Te|year=2002|author=Aliev, F. F.|journal=Inorganic Materials|volume=38|pages=995–997|issue=10|s2cid=91815176}}

* {{cite journal|doi=10.1063/1.121309|title=Large positive magnetoresistance in thin films of silver telluride|year=1998|author1=Chuprakov, I. S. |author2=Dahmen, K. H. |journal=Applied Physics Letters|volume=72|pages=2165|issue=17|bibcode = 1998ApPhL..72.2165C }}

*Hagyeong Kwon, Dongyeon Bae, Dongyeun Won, Heeju Kim, Gunn Kim, Jiung Cho, Hee Jung Park, Hionsuck Baik, Ah Reum Jeong, Chia-Hsien Lin, Ching-Yu Chiang, Ching-Shun Ku, Heejun Yang, and Suyeon Cho "Nanoporous Silver Telluride for active hydrogen evolution." (n.d.) https://pubs.acs.org/doi/10.1021/acsnano.0c09517

{{Tellurides}}