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The document is a contents list for the journal "Dalton Transactions: An International Journal of Inorganic Chemistry." It includes various articles and papers on topics such as copper complexes, lanthanide-based POMs, and coordination polymers. The journal is published by The Royal Society of Chemistry, a leading chemistry community. The document also mentions approved training courses offered by the society. The given document is a list of papers published in the journal Dalton Transactions. The papers cover a range of topics in chemistry, including catalysis, phosphors, materials synthesis, and more. Each paper is identified by its title, authors, and page number. The document also includes a correction and a retraction for two previously published papers. [Extracted from the article]

In this paper, carbon-matrix-supported copper (Cu) and cobaltous oxide (CoO) nanoparticles were obtained by using coordination polymers (CPs) as a precursor. The aqueous solutions of copper methacrylate (CuMA) and cobalt methacrylate (CoMA) were preferentially prepared, which were then mixed with anhydrous ethanol to fabricate dual metal ion coordination polymers (CuMA/CoMA). After calcination under an argon atmosphere, the Cu-CoO/C nanocomposite was obtained. Scanning electron microscope (SEM) and transmission electron microscope (TEM) showed that the material has banded morphology, and the dual functional nanoparticles were highly dispersed in the carbon matrix. The prepared material was used in a heterogeneous Fenton-like reaction, with the aim of replacing traditional ferric catalysts to solve pH constraints and the mass production of ferric slime. The obtained nanocomposite showed excellent catalytic performance on the degradation of methylene blue (MB) at near-neutral conditions; the discoloration efficiency is about 98.5% within 50 min in the presence of 0.15 mmol/mL H2O2 and 0.5 mg/mL catalyst. And good reusability was verified via eight cycles. The plausible pathway for MB discoloration and the possible catalytic mechanism was also proposed. [ABSTRACT FROM AUTHOR]

• The pyridine polymers with cationic skeleton were obtained utilizing conjugation ring. • The cationic framework of pyridine polymers endows them with Au(III) selectivity. • The single point contact improved the pyridine polymer adsorption capacity for gold. • The cationic pyridine polymers perform well in practical solutions with significantly varying ionic concentrations. Recovering gold from rich waste printed circuit boards (WPCBs) resource are of great significance to gold development and utilization. In this paper, cationic pyridine polymers with different configurations were designed and synthesised for highly selective and efficient recovery of gold from a WPCB leaching solution. The structures and performances of the cationic pyridine polymers were analysed using a 4–aminopyridine polychloromethylstyrene (4–AP/PCMS). The results indicate that the 4–AP/PCMS performed well in an acidic environment, including in the 5 % aqua regia solution. Gold adsorption on the 4–AP/PCMS followed pseudo–second–order kinetics and Langmuir isotherm models, suggesting that chemisorption occurred via a single–layer mechanism with a maximum loading capacity of 437.68 mg/g. Further, Au(III) adsorption on the 4–AP/PCMS involved electrostatic interactions and reduction between pyridine and AuCl 4 −. After five adsorption–desorption cycles, the adsorption rate remained above 99 %, whereas in actual leaching solutions it reached 92.24 %. All five pyridine polymers demonstrated outstanding Au(III) selectivity over binary and multicomponent solutions containing Cu(II), Ni(II), Co(II), Zn(II), Fe(III), Cd(II), and Mg(II), benefitting from the cationic pyridine skeleton. Contact patterns between the cationic pyridine polymers and AuCl 4 − considerably affected the gold loading capacity, and a single–point contact was found to be favourable for gold adsorption. These results indicated that cationic pyridine polymers are promising for recovering gold from WPCB leaching solutions. [ABSTRACT FROM AUTHOR]