来源：ACS PublicationsRare-earth elements (REEs) are crucial for sustainable industrial processes, but current extraction methods are environmentally damaging. Our research explores using proteins that bind REEs as a potentially eco-friendly alternative for purification. Lanmodulin (LanM) is a natural protein known for its extremely strong (picomolar) affinity for REEs. However, LanM’s disordered structure makes it challenging for engineering. To overcome this, we developed a protein engineering platform based on the stable 4-Helix Bundle (4HB) framework, which has 3 helix-loop-helix regions. We ...
Release time:
2026
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09
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来源：ACS PublicationsWe present two independent optical methods for absolute primary thermometry using rare-earth-doped nanoparticles. Both approaches rely exclusively on the internal energy levels and population dynamics of the dopant ions, eliminating the need for external temperature references. We experimentally demonstrate the concepts by using Y2O3: Yb3+/Er3+ nanoparticles, exploiting Boltzmann distribution between individual Stark sublevels of the Er3+ ions, emitting in the green spectral region (∼550 nm) and in the near-infrared spectral region (∼1600 nm). Our strategy establishes rare-e...
Release time:
2026
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09
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28
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来源：ACS PublicationsAlkaline hydrogen oxidation reaction (HOR) is the bottleneck restricting the performance of anion-exchange membrane fuel cells (AEMFCs), originating from sluggish Volmer kinetics induced by mismatched adsorption of H* and OH intermediates on commercial Pt/C catalysts, accompanied by high Pt cost, poor durability and inferior CO tolerance. Herein, Pr-doped PtMo ternary nanoparticles anchored on XC-72 carbon (PtMoPr/C) are fabricated via a facile wet chemical reduction strategy, where trace Pr dopant regulates electronic configuration and lattice strain of PtMo via unique 4f-5...
Release time:
2026
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来源：ACS PublicationsRare-earth ions are pivotal for integrated photonic light sources, but their low optical transition cross sections inherently limit pump absorption efficiency and spontaneous emission rates. Here, we overcome these drawbacks by designing a dielectric metasurface that supports dual flat bands, which synergistically enhance both excitation and emission processes. Strong momentum–space anticrossings arise from hybridization between transverse-electric-like and transverse-magnetic-like surface lattice resonances hosted by a TiO2 nanodisk array integrated on a Yb3+-doped Ta2O5 sl...
Release time:
2026
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