{"id":419967,"date":"2026-01-05T11:46:51","date_gmt":"2026-01-05T10:46:51","guid":{"rendered":"https:\/\/climatescience.press\/?p=419967"},"modified":"2026-01-05T11:46:53","modified_gmt":"2026-01-05T10:46:53","slug":"claim-efficient-method-to-capture-carbon-dioxide-from-the-atmosphere-developed","status":"publish","type":"post","link":"https:\/\/climatescience.press\/?p=419967","title":{"rendered":"CLAIM: Efficient method to capture carbon dioxide from the atmosphere developed"},"content":{"rendered":"\n
\"Illustration<\/figure>\n\n\n\n

<\/p>\n\n\n\n

In late December 2025, researchers at the University of Helsinki’s Department of Chemistry, led by Professor Timo Repo and Postdoctoral Researcher Zahra Eshaghi Gorji, introduced a reusable chemical compound based on a superbase (1,5,7-triazabicyclo [4.3.0] non-6-ene, or TBN) combined with benzyl alcohol. <\/strong><\/p>\n\n\n\n

This compound selectively absorbs CO\u2082 directly from ambient air without reacting with nitrogen, oxygen, or other gases.<\/strong><\/p>\n\n\n\n

This lab-scale breakthrough, published in Environmental Science & Technology, addresses key DAC challenges: high energy use and selectivity at low CO\u2082 concentrations (~420 ppm). <\/strong><\/p>\n\n\n\n

It could enable more cost-effective and scalable atmospheric carbon removal if scaled up.<\/strong><\/p>\n\n\n\n

\"Illustration<\/figure>\n\n\n\n
\n\n\n\n

From Watts Up With That?<\/a><\/p>\n\n\n\n

By Anthony Watts<\/a><\/p>\n\n\n\n

\"Illustration<\/figure>\n\n\n\n

From the University of Helsinki and the \u201cof miniscule importance\u201d department comes this exercise in futility.<\/em><\/p>\n\n\n\n

A new method to capture carbon dioxide from the air has been developed at the University of Helsinki\u2019s chemistry department.<\/p>\n\n\n\n

The method developed by Postdoctoral Researcher Zahra Eshaghi Gorji <\/strong>is based on a compound of superbase and alcohol. Tests done in professor Timo Repo\u2019s<\/strong> group show that the compound appears promising: one gram of the compound can absorb 156 milligrams of carbon dioxide directly from untreated ambient air. However, the compound does not react with nitrogen, oxygen or other atmospheric gases. Capasity clearly outperforms the CO2<\/sub> capture methods currently in use.<\/p>\n\n\n\n

The CO2<\/sub> captured by the compound can be released by heating the compound at 70\u202f\u00b0C in 30 minutes. Clean CO2<\/sub> is recovered and can be recycled.<\/p>\n\n\n\n

The ease of releasing CO2<\/sub> is the key advantage of the new compound. In current compounds, releasing CO2<\/sub> typically requires heat above 900 degrees Celsius.<\/p>\n\n\n\n

\u2013 In addition, the compound can be used multiple times: the compound retained 75 percent of its original capacity after 50 cycles, and 50 percent after 100 cycles.<\/p>\n\n\n\n

Non-toxic and cost-effective<\/p>\n\n\n\n

The new compound was discovered by experimenting with a number of bases in different compounds, says Eshagi Gorji. The experiments lasted more than a year in total.<\/p>\n\n\n\n

The most promising base proved to be 1,5,7-triazabicyclo [4.3.0] non-6-ene <\/em>(TBN), developed at in the professor Ilkka Kilpel\u00e4inen\u2019s group, which was combined with benzyl alcohol to produce the final compound.<\/p>\n\n\n\n

\u2013 None of the components is expensive to produce, Eshaghi Gorji points out. In addition, the fluid is non-toxic.<\/p>\n\n\n\n

The compound will now be tested in pilot plants at a near-industrial scale, rather than in grams. A solid version of the liquid compound must be made for this purpose.<\/p>\n\n\n\n

\u2013 The idea is to bind the compound to compounds such as silica and graphene oxide, which promotes the interaction with carbon dioxide.<\/p>\n\n\n\n

Link to article https:\/\/pubs.acs.org\/doi\/10.1021\/acs.est.5c13908<\/a><\/p>\n\n\n\n

\n\n\n\n

Journal: Environmental Science & Technology<\/h4>\n\n\n\n

DOI: 10.1021\/acs.est.5c13908 <\/a><\/h4>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

In late December 2025, researchers at the University of Helsinki’s Department of Chemistry, led by Professor Timo Repo and Postdoctoral Researcher Zahra Eshaghi Gorji, introduced a reusable chemical compound based on a superbase (1,5,7-triazabicyclo [4.3.0] non-6-ene, or TBN) combined with benzyl alcohol. This compound selectively absorbs CO\u2082 directly from ambient air without reacting with nitrogen, oxygen, or other gases.<\/p>\n","protected":false},"author":121246920,"featured_media":419977,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","_crdt_document":"","advanced_seo_description":"Discover a new eco-friendly chemical compound that efficiently captures CO\u2082 from the air, revolutionizing carbon removal technology.","jetpack_seo_html_title":"New Reusable Chemical Compound Captures CO\u2082 from Air Efficiently","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":true,"token":"eyJpbWciOiJodHRwczpcL1wvY2xpbWF0ZS1zY2llbmNlLnByZXNzXC93cC1jb250ZW50XC91cGxvYWRzXC8yMDI2XC8wMVwvMEFRTnF0VktaZy1xbGc5cW1SR3dfV1RxOUFUenRnM3dZX0xqempCRnJCbVJQZFhJUk0zYzFlc1pPbjdMWDJuVHpoWFNudG5oUUJUejlsdzdORFJ0dkhOYzhzcWVBR2xqQVlCRkYtSGw1T1JOQXBEcE9jWmM3R3hwTU90Nm0yM3hyLTEtMTAyNHg1NTAuanBlZyIsInR4dCI6IkNMQUlNOiBFZmZpY2llbnQgbWV0aG9kIHRvIGNhcHR1cmUgY2FyYm9uIGRpb3hpZGUgZnJvbSB0aGUgYXRtb3NwaGVyZSBkZXZlbG9wZWQiLCJ0ZW1wbGF0ZSI6ImhpZ2h3YXkiLCJmb250IjoiIiwiYmxvZ19pZCI6MTU1ODEyNDQ5fQ.QV0cIg2Gvhoo5r-KpiYDjFTWn7WTvKdt2_GJdBNjxHwMQ"},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[691840525,691829997,691832195,691821973,691840523,691840522,691840521,691840520],"class_list":{"0":"post-419967","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-uncategorized","8":"tag-atmospheric-chemistry","9":"tag-carbon-dioxide-co","10":"tag-co2-capture","11":"tag-direct-air-capture-dac","12":"tag-liquid-absorbent","13":"tag-postdoctoral-researcher-zahra-eshaghi-gorji","14":"tag-professor-timo-repo","15":"tag-university-of-helsinkis-department-of-chemistry","17":"fallback-thumbnail"},"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/climatescience.press\/wp-content\/uploads\/2026\/01\/0AQNqtVKZg-qlg9qmRGw_WTq9ATztg3wY_LjzjBFrBmRPdXIRM3c1esZOn7LX2nTzhXSntnhQBTz9lw7NDRtvHNc8sqeAGljAYBFF-Hl5ORNApDpOcZc7GxpMOt6m23xr-1.jpeg?fit=1490%2C801&ssl=1","jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/paxLW1-1LfF","jetpack-related-posts":[{"id":202062,"url":"https:\/\/climatescience.press\/?p=202062","url_meta":{"origin":419967,"position":0},"title":"Fastest Carbon Dioxide Catcher Heralds New Age for Direct Air Capture","author":"uwe.roland.gross","date":"05\/29\/2022","format":false,"excerpt":"New carbon sorbent is 99% efficient, lightning fast, and easily recyclable Peer-Reviewed Publication TOKYO METROPOLITAN UNIVERSITY IMAGE:\u00a0ATMOSPHERIC AIR WITH LOW CONCENTRATIONS OF CARBON DIOXIDE IS PASSED THROUGH AN AQUEOUS SOLUTION OF IPDA, WHERE THE CARBON DIOXIDE RAPIDLY REACTS TO CREATE A SOLID PRODUCT. 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