Hafnium

12/01/2023 - "Herein, monodisperse hafnium carbide nanoparticles (HfC NPs) were successfully prepared for noninflammatory PTT of cancer. "
11/08/2022 - "In addition to their use as carriers in drug delivery, nanoMOFs containing hafnium have been successfully employed as radio-enhancers augmenting damage caused by X-ray irradiation in tumor tissue. "
12/01/2023 - "Hafnium carbide nanoparticles for noninflammatory photothermal cancer therapy."
01/01/2023 - "Harnessing Hafnium-Based Nanomaterials for Cancer Diagnosis and Therapy."
11/02/2021 - "Herein, we technically developed the metal-polyphenolic nanosystem with precise NIR-II fluorescence-imaging guidance for combining hafnium (Hf)-sensitized radiotherapy with PTT to regress tumor growth."

01/01/2013 - "With the thermal shock numerical simulation on hafnium diboride (HfB2), a detailed study of the effects of the different external constraints and thermal environments on the TSR of UHTCs had been made. "

11/01/2022 - "The current study was designed to calculate the dose enhancement factor (DEF) of iodine (I), gold (Au), bismuth (Bi), gadolinium (Gd), and hafnium (Hf) nanoparticles (NP)s by Monte Carlo (MC) modeling of an electronic brachytherapy source in resection cavities of breast tumors. "

04/01/2006 - "Alloy buttons with hafnium concentrations up to 40 mass% were made using an argon-arc melting furnace. "
05/01/2005 - "Ti-Hf alloys (10, 20, 25, 30, 35 and 40 mass% Hf) were prepared by arc-melting titanium sponge and hafnium sponge. "
02/15/2005 - "Titanium alloys with 10 to 40 mass % Hf were made with titanium and hafnium sponge in an argon-arc melting furnace. "
02/09/2023 - "The presented work aimed to investigate the influence of the hafnium/(zirconium and molybdenum) ratio on the microstructure, microhardness and corrosion resistance of Ti20Ta20Nb20(ZrMo)20-xHfx (where x = 0, 5, 10, 15 and 20 at.%) high entropy alloys in an as-cast state produced from elemental powder and obtained via the vacuum arc melting technique. "

11/08/2022 - "Here, a green and sustainable route was developed to stereoselectively produce trans-AN (ca. 90% selectivity) over an organic polymeric phosphonate-hafnium catalyst (PAS-Hf) through the cascade transfer hydrogenation and dehydration of biomass-based 4'-methoxypropiophenone (4-MOPP), with an environmental impact factor (E-factor) of 47.73. "
08/21/2021 - "Here, we developed an acid-base bifunctional polymeric material (PhP-Hf (1:1.5)) composed of hafnium and phenylphosphonate in a molar ratio of 1:1.5 for catalytic conversion of biomass-derived 4'-methoxypropiophenone (4-MOPP) to AN via cascade Meerwein-Pondorf-Verley (MPV) reduction and dehydration reactions in a single pot. "
04/23/2008 - "The tetra-nuclear zirconium and hafnium complexes showed catalytic activity for the intramolecular cyclization of (+)-citronellal to isopulegols without formation of byproducts resulting from etherification and dehydration. "