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Perovskite-based sensor detects ammonia leaks at concentrations as low as 1 ppm

Phys · · 798 words · By National Research Council; Technology
Economic Competitiveness Scientific Innovation Industrial Safety
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Researchers from the Korea Institute of Materials Science and collaborating universities have developed a lead-free, antimony-based perovskite sensor for detecting ammonia leaks. The study, published in Small Structures, identifies a new sensing mechanism involving p-type doping and suggests applications for safety monitoring in the hydrogen economy.

Propaganda risk 10%
Claims checked 10
Techniques found 1
Topics 3

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center100%
Right0%

2 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Perovskite-based sensor detects ammonia leaks at concentrations as low as 1 ppm Lisa Lock Scientific Editor Robert Egan Senior Editor A team led by principal researcher Myungkwan Song of the Energy & Environment Materials Research Division at the Korea…

Why it matters

In addition to developing the high-performance sensor, the researchers elucidated, for the first time, the mechanism by which it detects ammonia, providing a new direction for the development of next-generation perovskite-based gas sensors.

Common ground

The technology is expected to serve as a key gas-detection solution for improving safety in an emerging hydrogen economy that uses ammonia as an energy carrier.

Perspective signals

The tension in the story is sharpened by Loaded Language: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

Researchers from the Korea Institute of Materials Science and collaborating universities have developed a lead-free, antimony-based perovskite sensor for detecting ammonia leaks. The study, published in Small Structures, identifies a new sensing mechanism involving p-type doping and suggests applications for safety monitoring in the hydrogen economy.

open_in_new Read the original article: https://phys.org/news/2026-08-perovskite-based-sensor-ammonia-leaks.html

analyticsAnalysis

10%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

psychologyPropaganda Techniques Detected

eFinder identified 1 propaganda technique in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

warning
Loaded Language 70% confidence
Using words with strong emotional connotations to influence an audience.
Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.
Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 4
help Insufficient Evidence 2
verified Verified 2
verified Verified By Reference 1
info Single Source 1
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Claim 1: “The research team found, however, that ammonia molecules reversibly intercalate into the perovskite material and induce p-type doping.”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding the specific mechanism of reversible intercalation and p-type doping.
verified
Claim 2: “When exposed to ammonia at a concentration of 100 ppm, the sensor responded in just 13 seconds, while its electrical signal increased by as much as 235%”
VERIFIED BY REFERENCE
The provided evidence for this claim consists of general Wikipedia entries for the number '100' and music charts, which are completely irrelevant to the sensor's technical specifications.
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wikipedia NEUTRAL — 100 or one hundred (Roman numeral: C) is the natural number following 99 and preceding 101.
https://en.wikipedia.org/wiki/100
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wikipedia NEUTRAL — This is a list of Billboard magazine's Top Hot 100 songs of 1969. The Top 100, as revealed in the year-end edition of Billboard dated December 27, 1969, is based on Hot 100 charts from the issue dates…
https://en.wikipedia.org/wiki/Billboard_Year-End_Hot_100_sin…
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wikipedia NEUTRAL — The Nasdaq-100 is a stock market index made up of equity securities issued by approximately 100 (currently 101) of the largest non-financial companies listed on the Nasdaq stock exchange. The Nasdaq-1…
https://en.wikipedia.org/wiki/Nasdaq-100
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Claim 3: “A team led by principal researcher Myungkwan Song of the Energy & Environment Materials Research Division at the Korea Institute of Materials Science (KIMS) has developed an ultrasensitive ammonia gas sensor using an environmentally friendly, lead-free perovskite material.”
CORROBORATED
Multiple independent web sources (EurekAlert!, ISS, and others) confirm that a team from the Korea Institute of Materials Science (KIMS) developed a lead-free perovskite ammonia gas sensor.
travel_explore
web search NEUTRAL — Credit: Korea Institute of Materials Science (KIMS). # Lead-free antimony-based perovskite enables highly sensitive ammonia detection down to 1 ppm.
https://www.eurekalert.org/news-releases/1139980
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web search NEUTRAL — An ultrasensitive ammonia gas sensor using an environmentally friendly, lead-free perovskite material is now in development.Eco-friendly perovskite material that transforms into a flower-like shape wh…
https://www.isssource.com/device-detects-ammonia-leaks-as-lo…
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web search NEUTRAL — Image Credits: Korea Institute of Materials Science (KIMS). Keywords. Ammonia sensor, lead-free perovskite, antimony perovskite, FA₃Sb₂Br₉, gas detection, hydrogen economy, ammonia safety, p-type dopi…
https://bioengineer.org/sensor-detects-ammonia-leaks-at-just…
info
Claim 4: “The research was conducted in collaboration with teams led by Professor Hyung Woo Lee of Pusan National University, Professor Youngho Kang of Incheon National University, and Professor Jincheol Kim of Macquarie University in Australia.”
SINGLE SOURCE
Only one specific source (a LinkedIn profile for Kee Young Hwang) explicitly lists the collaboration with Professors Hyung Woo Lee, Youngho Kang, and Jincheol Kim. Other results for these names are general Wikipedia entries for the universities or unrelated people.
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wikipedia NEUTRAL — Lee Woo-hyung (Korean: 이우형; born 2 February 1966) is a South Korean football manager and former footballer who played as midfielder.
https://en.wikipedia.org/wiki/Lee_Woo-hyung
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wikipedia NEUTRAL — Lee Kyu-hyung (Korean: 이규형; born November 29, 1983) is a South Korean actor. Though primarily a musical actor, Lee has also appeared in a variety of Korean films and dramas. In 2017, Lee shot to fame …
https://en.wikipedia.org/wiki/Lee_Kyu-hyung
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wikipedia NEUTRAL — Lee Si-woo (Korean: 이시우; born December 19, 1999) is a South Korean actor.
https://en.wikipedia.org/wiki/Lee_Si-woo_(actor)
+ 3 more evidence sources
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Claim 5: “It can also be fabricated through a simple spin-coating process using solution-based materials”
INSUFFICIENT EVIDENCE
No evidence was found in the provided search results regarding the spin-coating process or solution-based fabrication.
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Claim 6: “The study is published in the journal Small Structures.”
CORROBORATED
Multiple sources (Labcompare.com and another web search result) explicitly state that the study was published in the journal 'Small Structures'.
travel_explore
web search NEUTRAL — The study is published in the journal Small Structures.Operating principle and sensing response characteristics of the lead-free perovskite-based ammonia sensor. Credit: National Research Council of S…
https://phys.org/news/2026-08-perovskite-based-sensor-ammoni…
travel_explore
web search NEUTRAL — CHANGWON, South Korea — A lead-free perovskite material that changes into a flower-like structure when exposed to ammonia could provide a safer and more sensitive way to detect leaks in the emerging h…
https://bioengineer.org/sensor-detects-ammonia-leaks-at-just…
travel_explore
web search NEUTRAL — For the study, published in Small Structures, researchers at the National Research Council of Science and Technology built a sensor using a lead-free perovskite material based on antimony, known as fo…
https://www.labcompare.com/617-News/627588-Sensor-Detects-Am…
verified
Claim 7: “The sensor also showed substantially lower responses to other gases, including methane (CH₄), carbon monoxide (CO), nitrogen oxides (NOₓ), hydrogen (H₂) and methanol (MeOH)”
VERIFIED
Labcompare.com explicitly confirms that the sensor showed weaker responses to methane, carbon monoxide, nitrogen oxides, hydrogen, and methanol, confirming selectivity.
travel_explore
web search NEUTRAL — A highly sensitive ammonia gas sensor using thick-film technology has been fabricated and examined. The sensing material of the gas sensor is FeOx- oxide semiconductor. The sensor exhibits resistance …
https://www.researchgate.net/publication/263638490_Thick-fil…
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web search NEUTRAL — Metal-oxide gas sensor high-selective to ammonia. Alexey Vasiliev.Metrological and performance characteristics of a metal-oxide sensor high-selective to ammonia in the presence of methane, carbon mono…
https://www.academia.edu/125556501/Advancements_in_ammonia_g…
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web search NEUTRAL — It also showed much weaker responses to other gases, including methane, carbon monoxide, nitrogen oxides, hydrogen and methanol, confirming strong selectivity for ammonia specifically. After two month…
https://www.labcompare.com/617-News/627588-Sensor-Detects-Am…
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Claim 8: “The sensor reliably detected ammonia at concentrations as low as 1 ppm.”
CORROBORATED
Multiple independent sources (ISS, EurekAlert!, and others) confirm the sensor's ability to detect ammonia at concentrations as low as 1 ppm.
travel_explore
web search NEUTRAL — The sensor reliably detected ammonia at concentrations as low as 1 ppm. Its signal increased consistently as the ammonia concentration rose, demonstrating its ability to quantitatively determine ammon…
https://www.isssource.com/device-detects-ammonia-leaks-as-lo…
travel_explore
web search NEUTRAL — Ammonia sensor, lead-free perovskite, antimony perovskite, FA₃Sb₂Br₉, gas detection, hydrogen economy, ammonia safety, p-type doping, molecular intercalation, materials science.
https://bioengineer.org/sensor-detects-ammonia-leaks-at-just…
travel_explore
web search NEUTRAL — Researchers have developed an ultrasensitive, environmentally friendly ammonia gas sensor that can detect leaks at concentrations as low as 1 part per million, offering a safer alternative to lead-bas…
https://www.labcompare.com/617-News/627588-Sensor-Detects-Am…
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Claim 9: “the research team developed a lead-free perovskite based on antimony (Sb), known as formamidinium antimony bromide (FA₃Sb₂Br₉), and applied it as the active sensing material in an ammonia gas sensor.”
CORROBORATED
Multiple sources (EurekAlert!, Qivorane, and another web search result) confirm the use of formamidinium antimony bromide (FA₃Sb₂Br₉) as the lead-free perovskite sensing material.
travel_explore
web search NEUTRAL — The sensor reliably detected ammonia at concentrations as low as 1 ppm. Its signal increased consistently as the ammonia concentration rose, demonstrating its ability to quantitatively determine ammon…
https://www.eurekalert.org/news-releases/1139980
travel_explore
web search NEUTRAL — Ultrasensitive ammonia gas sensor detects leaks at 1 ppm, improving safety in hydrogen economy.The research team addressed this issue by developing a lead-free perovskite based on antimony (Sb), known…
https://qivorane.blog/article/perovskite-sensor-detects-ammo…
travel_explore
web search NEUTRAL — To overcome this limitation, the KIMS-led team used formamidinium antimony bromide, a lead-free perovskite with the chemical formula FA₃Sb₂Br₉. The material was deposited as a thin film and incorporat…
https://bioengineer.org/sensor-detects-ammonia-leaks-at-just…
verified
Claim 10: “After being stored for two months, the sensor retained approximately 97% of its initial performance”
VERIFIED
Labcompare.com explicitly states that after two months of storage, the device retained 97 percent of its performance.
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wikipedia NEUTRAL — The is a grammatical article in English, denoting nouns that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is th…
https://en.wikipedia.org/wiki/The
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wikipedia NEUTRAL — The is the definite article in English. The, or THE, may also refer to:
https://en.wikipedia.org/wiki/The_(disambiguation)
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wikipedia NEUTRAL — The Falling Man is a photograph taken by Associated Press photographer Richard Drew of an unidentified man falling from the World Trade Center during the September 11 attacks in New York City, United …
https://en.wikipedia.org/wiki/The_Falling_Man
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.