Amino-Triphenolate Cerium (Ⅳ) Complexes for High Molecular Weight PLLA Synthesis and Highly Stereoselective ROP of rac-LA

Polymer, Journal Year: 2025, Volume and Issue: unknown, P. 128291 - 128291

Published: March 1, 2025

Language: Английский

---

Amino-Triphenolate Cerium (IV) Complexes for High Molecular Weight Plla Synthesis and Highly Stereoselective Rop of Rac-La

Published: Jan. 1, 2025

In the industrial production of biodegradable, bio-based, and recyclable polylactic acid (PLA), Sn(Oct)2 is most commonly used catalyst for ring-opening polymerization (ROP) L-lactide (L-LA). However, its toxicity presents significant limitations, particularly in biomedical applications. Identifying a non-toxic alternative to under melting conditions remains challenge. this study, we report cerium(IV) complexes with aminotriphenol ligands that exhibit excellent catalytic performances ROP L-LA both mild conditions. Ultra-high molecular weight PLA (up 224.00 kg/mol) was obtained at 140°C high activity observed even low loading. This first exhibiting such activity, suggesting they could serve as viable substitute Sn(Oct)2. Additionally, heteroselectivity rac-LA solution (Pr = 0.98) 0.86).

Language: Английский

---

Transcriptional profiling of exosomes derived from serum of patients with rare earth pneumoconiosis by RNA-sequencing and PI3K/Akt pathway is activated in lung of mice exposed to rare earth Nd2O3.

Toxicology Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

---

Adsorption and kinetic studies of 134Cs(I) and 141Ce (III) ions onto itaconic-grafted-starch/MnO₂ nanocomposite

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 71, P. 107159 - 107159

Published: Feb. 6, 2025

Language: Английский

---

Sustainable recovery of rare Earth elements from industrial waste: A path to circular economy and environmental health

Waste Management Bulletin, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

---

Rare earth recovery using metal–organic frameworks: advances, challenges, and future directions

Published: April 4, 2025

The field of study rare earth element (REE) adsorption by metal–organic frameworks (MOFs) has emerged relatively recently. Recovering REEs from industrial, mining, and end-of-life electronics recycling effluents offers a sustainable approach to mitigating their unrestricted release into the environment. MOFs, known for exceptional porosity modifiability, have demonstrated significant potential as efficient adsorbents REE recovery aqueous environments. To propel advancement this promising technology, review fragmented research conducted over past decade on MOFs been undertaken. Functionalization combination proven effective in enhancing adsorbent capacity, stability, rate, reusability. Notably, 3D-agaric-like core–shell U6N@ZIF-8-20 MOF, MOF-bonded silica amine polymer, phosphonic acid–functionalized ZIF-67@SiO2 MOF exhibited capacities 341.0, 426.0, 342.5 mg/g Er3+, Y3+, Ce3+, respectively. Eluents such HCl, HNO3, acetonitrile successfully achieved up five adsorption–desorption cycles with minimal loss efficiency. While are highly adsorption, further advancements needed reducing equilibrium time, conducting fixed-bed column studies, evaluating real-world wastewater support continued development.

Language: Английский

---

Carbon dioxide-enriched atmosphere diminished the phytotoxicity of neodymium in wheat (Triticum aestivum L.)

Frontiers in Plant Science, Journal Year: 2025, Volume and Issue: 16

Published: April 28, 2025

Introduction Neodymium (Nd), a rare earth element (REEs), is widely utilized in industry. Although the detailed biological role of Nd plant biology unclear, recent reports have noted its oxidative phytotoxicity at concentrations higher than 200 mg kg -1 soil. At present it unclear if these detrimental effects could be offset by global rise atmospheric carbon dioxide concentration ([CO 2 ]) which has been shown to enhance photosynthesis and growth wide range C3 species. Methods To assess any amelioration [CO ], phytotoxic dose (III) was given wheat grown under two scenarios CO , ambient levels (aCO 420 ppm) eCO (620 photosynthesis. Results discussion Our results suggest that treatment retarded growth, induced severe stress. In contrast, reduced accumulation tissues mitigated negative impact on biomass production related parameters, i.e., photosynthetic rate, chlorophyll content, Rubisco activity photochemical efficiency PSII (Fv/Fm). Elevated ] also supported antioxidant defense system Nd-treated wheat, enhanced enzymatic antioxidants, more efficient ascorbate-glutathione recycling noted. While additional data are needed, initial rising [CO2] reduce Nd-induced stress wheat.

Language: Английский

---

Exploring the role of rare earth elements (praseodymium, samarium, lanthanum, and terbium) and oxidative stress in polycystic ovary syndrome: A case-control study

Human & Experimental Toxicology, Journal Year: 2025, Volume and Issue: 44

Published: May 1, 2025

Background Praseodymium (Pr), Samarium (Sm), Lanthanum (La), and Terbium (Tb) are rare earth elements (REEs) that can accumulate in the body induce oxidative stress (OS), which may contribute to polycystic ovary syndrome (PCOS), a condition affecting 116 million women worldwide. With increasing use of REEs, understanding their role PCOS is crucial. Design This case-control study included 56 cases 50 healthy controls, with confounding factors such as age, BMI, hormones controlled. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) was used measure serum levels Pr, Sm, La, Tb, Pearson correlation performed explore relationship markers malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD). Result A significant increase Tb observed compared controls ( p < 0.05). The 95% confidence intervals (CIs) for differences were [0.0008, 0.0032], [0.0002, 0.0091], [0.0019, 0.0073], 0.0129], respectively. Additionally, MDA significantly elevated, accompanied by reduction antioxidant markers-GSH SOD 0.001). Elevated REE positively correlated increased negatively GSH SOD, indicating stress. Conclusion These findings suggest stress-induced metal intoxication play critical development PCOS. Future studies should clinical significance exposure its potential target preventive strategies management.

Language: Английский

---

Enhanced La(III) adsorption performance and mechanism of urea-modified dolomite composite adsorbent

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 354, P. 129059 - 129059

Published: Aug. 2, 2024

Language: Английский

---

The elemental variance between the "rice" and "non-rice" portions of Maifanitum and its health risk assessment

Journal of Trace Elements in Medicine and Biology, Journal Year: 2024, Volume and Issue: 86, P. 127550 - 127550

Published: Oct. 13, 2024

Language: Английский

---