A team of scientists has succeeded in creating green ammonia, a breakthrough that could change how we produce fertiliser and store renewable energy. Using atomic-scale engineering to tweak the structure of a specific mineral, the researchers found a way to use nothing but sunlight, water, and air to create ammonia at room temperature. This new method is nearly eleven times more efficient than previous attempts using similar materials, potentially offering a path away from one of the world’s most polluting industrial processes.<\/p>\n
For over a century, the world has relied on the Haber-Bosch process to produce ammonia, which is the primary ingredient in fertilisers, by combining atmospheric nitrogen with hydrogen gas over an iron catalyst at high pressures (150\u2013200 bar) and temperatures (400\u2013450\u00b0C). Although it was a landmark discovery in the early 1900s that helped prevent famine and mass starvation, the process came with a heavy environmental price tag. It requires massive amounts of heat and pressure, consuming roughly 1% of the entire world\u2019s energy and releasing 300 million tons of carbon dioxide every year.\u00a0<\/p>\n
The new research presents a novel catalyst that offers a sustainable alternative through a process known as photocatalytic nitrogen reduction. This process uses light energy to spark a chemical reaction, turning nitrogen gas from the air into liquid ammonia without fossil fuels or extreme conditions.\u00a0 The research team, with researchers from the TCG Centres for Research and Education in Science and Technology (TCG CREST),\u00a0 Academy of Scientific and Innovative Research (AcSIR), Techno India University and Ramakrishna Mission Vidyamandira, focused on a material called bismuth molybdate (Bi2MoO6). While this material was already known for its ability to react with light, it was historically too slow and inefficient to be useful for making ammonia. To address this, the team doped the material with tin atoms, which replaced some bismuth atoms in the crystal structure. This alters the material\u2019s behaviour at the electronic level.<\/p>\n
Nitrogen atoms are held together by a triple bond, one of the strongest connections in the chemical world. It is so tough that nitrogen is usually considered inert, meaning it doesn’t readily react with anything. The tin-doped catalyst works by creating oxygen vacancies, active sites on the material’s surface. These holes act like chemical traps, grabbing nitrogen molecules and weakening their bonds. Computer simulations, known as Density Functional Theory, confirmed that these tin atoms adjust the material’s d-band centre, lowering the energy needed to break the nitrogen triple bond.<\/p>\n
When the team tested their optimised catalyst, containing exactly 10% tin, under a lamp that mimics the sun, the results were promising. The ammonia production rate jumped to 2.07 millimoles per gram, which is 10.9 times higher than the rate achieved by the undoped material. More importantly, the team moved their experiment out of the laboratory and into the real world. They built a prototype reactor and placed it under natural sunlight, where the\u00a0material continued to produce ammonia effectively, proving that the technology could be viable for outdoor use.<\/p>\n
The team also found a volcano-type trend in their results, meaning there is a very specific sweet spot for how much tin can be added. While 10% tin was the perfect amount, adding more than that made the catalyst perform worse. Excessive tin causes the electrical charges within the material to recombine too quickly, extinguishing the reaction before it can finish making ammonia. This means precise manufacturing is required to keep the catalyst at peak performance.<\/p>\n
While earlier research has tried using different metals like iron, gadolinium, or indium to boost these catalysts, the tin-based approach creates a dual active site that is particularly effective at both attracting nitrogen and providing the electrons needed to complete the reaction. Furthermore, many previous catalysts were unstable and would break down after a few hours of use. The new tin-doped material remained stable and effective even after fifteen consecutive cycles of testing, showing it is durable enough for long-term industrial applications.<\/p>\n
If this technology can be scaled up, it could enable a decentralised model of fertiliser production. Instead of massive, polluting factories shipping fertiliser across the globe, farmers could potentially use small-scale solar reactors to produce their own ammonia on-site using only water and air. This would not only slash carbon emissions but also make food production more affordable and accessible in remote or developing regions. Additionally, as ammonia is a high-density carrier for hydrogen energy, this solar-powered\u00a0breakthrough could provide a clean way to store and transport green fuel, helping the world move toward a truly sustainable energy future.<\/p>\n","protected":false},"excerpt":{"rendered":"A team of scientists has succeeded in creating green ammonia, a breakthrough that could change how we produce…\n","protected":false},"author":2,"featured_media":78378,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21054],"tags":[57424,3556,3011,5307,25785,57427,380,57429,57425,57428,21064,134,8155,57423,57426,8156],"class_list":["post-78377","post","type-post","status-publish","format-standard","has-post-thumbnail","category-bosch","tag-academy-of-scientific-and-innovative-research-acsir","tag-agriculture","tag-ammonia","tag-bosch","tag-fertilizer","tag-haber-bosch","tag-india","tag-new-species","tag-ramakrishna-mission-vidyamandira","tag-research-news","tag-robert-bosch","tag-science","tag-science-news","tag-tcg-crest","tag-techno-india-university","tag-technology-news"],"_links":{"self":[{"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/posts\/78377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/comments?post=78377"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/posts\/78377\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/media\/78378"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/media?parent=78377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/categories?post=78377"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/germany\/wp-json\/wp\/v2\/tags?post=78377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}