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Palladium catalysts are highly efficient for a variety of chemical industrial processes but are prone to being affected by poisons during practical application. Sulfur is one of the major poisons in Pd-based catalysts. The recycling of deeply poisoned Pd species like Pd sulfides is challenging due to the strong Pd-S bond.

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A hydrogen sulfide-activated Pd@CuO nanoprobe for NIR-II photoacoustic imaging of colon cancer and photothermal-enhanced ferroptosis therapy.

Biosens Bioelectron

January 2025

State Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin, 541004, PR China. Electronic address:

Article Synopsis
  • Imaging guided cancer therapy merges diagnosis and treatment to target and eliminate tumors more effectively.
  • The study introduces a novel nanocomposite (PCO) that transforms into PCS specifically in colorectal tumor tissues, enhancing photoacoustic imaging and therapy through ferroptosis.
  • The PCS nanocomposite initiates reactions that generate hydroxyl radicals, leading to oxidative stress in cancer cells, thereby promoting ferroptosis and improving treatment outcomes in a weakly acidic tumor environment.
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This article is devoted to the synthesis of a new magnetic palladium catalyst that has been immobilized on A-TT-Pd coated-magnetic FeO nanoparticles. Such surface functionalization of magnetic particles is a promising method to bridge the gap between heterogeneous and homogeneous catalysis approaches. The structure, morphology, and physicochemical properties of the particles were characterized through different analytical techniques, including TEM, FT-IR, XRD, SEM, EDS, TGA-DTG, ICP, and VSM techniques.

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Article Synopsis
  • Pd-modified metal sulfide gas sensors have great potential for detecting hydrogen, but oxygen adsorption on the Pd surface limits their effectiveness in air.
  • The researchers developed a novel edge-rich Pt-shell/Pd-core structure that improves hydrogen sensing by selectively managing how oxygen and hydrogen are adsorbed.
  • The resulting ZnS/PdPt sensor demonstrated an ultra-sensitive response and a wide detection range in air, outperforming many existing hydrogen sensors.
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For the first time, dendrimers based on thiacalix[4]arenes bearing imidazolium dendrons on one side and alkyl fragments on another side of the macrocyclic platform and symmetrical dendrimers with four dendrons on both sides were synthesized. Dendrons consist of gallic acid-based branches functionalized with imidazolium and triazolium groups. The physicochemical properties of the dendrimers such as micellar concentration (CMC), size, and solubilization capacity were measured.

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