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X-ray photoelectron spectroscopy reveals the surface chemistry of bio-based hybrid materials

Just a few atomic layers at the surface can strongly influence how effectively a material binds pollutants from water or how efficiently a photocatalyst responds to light. Researchers at the Fraunhofer Institute for Applied Polymer Research IAP use X-ray photoelectron spectroscopy (XPS) to investigate the chemical states and interactions at the surfaces and interfaces of bio-based carbon materials and organic-inorganic hybrid materials. Their insights can support the targeted development of functional materials for future industrial applications.

Published Sep 10, 2026 · 3:45 AMOriginal source: Phys.org - latest science and technology news stories5 reads
Just a few atomic layers at the surface can strongly influence how effectively a material binds pollutants from water or how efficiently a photocatalyst responds to light. Researchers at the Fraunhofer Institute for Applied Polymer Research IAP use X-ray photoelectron spectroscopy (XPS) to investigate the chemical states and interactions at the surfaces and interfaces of bio-based carbon materials and organic-inorganic hybrid materials. Their insights can support the targeted development of functional materials for future industrial applications.
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The Horn Dilemma

The majority of white and black rhinoceros are found in South Africa. This stronghold for these magnificent creatures is now being threatened by poachers killing rhino for their horns.Rhino horn, traded illegally in parts of Asia, is thought to be a cooling agent in traditional Chinese medicine. It's recently been hailed as a cure for cancer, and is seen as a status symbol in Vietnam. Made from keratin, the same stuff as hair or fingernails rhino horn has negligible medical properties, yet people are willing to pay up to £40,000 a kilogramme for it.International trade in rhino horn has been banned under CITES (Convention on International Trade in Endangered Species) since the 1990s. Trade in horn was banned within South Africa in 2009. Since then, poaching has increased exponentially, reaching more than 1300 rhino poached in 2015.Protecting the rhino in National and Provincial parks and privately owned reserves is a very dangerous and expensive undertaking. The government-run parks, such as Kruger National Park have about 75% of the South African rhino and are losing the most animals to poachers. The best protected rhino tend to be in the privately owned farms.Many private rhino owners want the ban on the sale of rhino horn to be lifted.This is because, unlike elephant ivory, pangolin scales and the bones from lions, rhinos can be dehorned without harming the animal. Many rhino owners are already removing the horns from their animals to stop them attracting poachers. So they are sitting on stockpiles of harvested horn.With education and demand-reduction schemes not working quickly enough, rhino owners hope to satisfy the demand by legally selling their harvested horn. Some just want to trade within South Africa, while others want CITES to allow a trade agreement between

Original sourceDiscovery