chemistry

Silver telluride

Silver telluride is a chemistry topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Silver telluride rather than just read about it. In short: Silver telluride (Ag2Te) is a chemical compound, a telluride of silver, also known as disilver telluride or silver(I) telluride. It forms a monoclinic crystal.

Key takeaways

Silver telluride belongs to chemistry; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Silver telluride to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Silver telluride from memory before moving on to harder problems.

Reference excerpt

Silver telluride (Ag2Te) is a chemical compound, a telluride of silver, also known as disilver telluride or silver(I) telluride. It forms a monoclinic crystal. In a wider sense, silver telluride can be used to denote AgTe (silver(II) telluride, a metastable compound) or Ag5Te3.

Properties

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.

Occurrence Silver(I) telluride occurs naturally as the mineral hessite, whereas silver(II) telluride is known as empressite. A silver gold telluride occurs as sylvanite.

Synthesis Porous silver telluride (AgTe) is synthesized by an electrochemical deposition method. A potentiostat and a three-electrode cell with sulfuric acid electrolyte containing Ag nanoparticles at are used. A silver paste used in the tungsten ditelluride (WTe2) attachment leaches into the electrolyte, causing Ag to dissolve in the electrolyte. The electrolyte is stirred to remove hydrogen bubbles. A silver-silver chloride electrode and a platinum wire can be used as reference and counter electrodes. In order to grow the porous AgTe, the WTe2 is treated with cyclic voltammetry. Glutathione-coated Ag2Te nanoparticles can be synthesized by preparing a solution containing AgNO3, Na2TeO3, and glutathione. N2H4 is added under stirring in an ice bath. The resulting product is washed for purification.

References

General references Aliev, F. F. (2002). "Phase Transition of Ag_Enriched Ag2Te". Inorganic Materials. 38 (10): 995–997. doi:10.1023/A:1020512918319. S2CID 91815176. Chuprakov, I. S.; Dahmen, K. H. (1998). "Large positive magnetoresistance in thin films of silver telluride". Applied Physics Letters. 72 (17): 2165. Bibcode:1998ApPhL..72.2165C. doi:10.1063/1.121309. Dalven, Richard (1966). "Fundamental Optical Absorption in Î²-Silver Telluride". Physical Review Letters. 16 (8): 311. Bibcode:1966PhRvL..16..311D. doi:10.1103/PhysRevLett.16.311. 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

Illustrations

Worked examples

Example 1 — a first encounter with Silver telluride

Start with the simplest possible case. Write down what Silver telluride claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In chemistry, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Silver telluride before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Silver telluride ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Silver telluride

In research: Silver telluride appears in chemistry research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Silver telluride in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Silver telluride is common in secondary-school and first-year university syllabi. It links to neighbouring topics Inorganic compound stubs, Non-stoichiometric compounds, Semiconductor materials, so understanding it makes those chapters shorter.
In everyday life: Look for Silver telluride outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Silver telluride in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Silver telluride means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Silver telluride out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Silver telluride in simple terms?

Silver telluride (Ag2Te) is a chemical compound, a telluride of silver, also known as disilver telluride or silver(I) telluride. It forms a monoclinic crystal.

Why does Silver telluride matter?

Because it connects several chemistry ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Silver telluride?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Silver telluride.