Cluster-selective 57Fe labeling of a Twitch-domaincontaining radical SAM enzyme by Namkoong, Gil, Suess, Daniel LM

“…Herein, we report a facile method for cluster-selective 57Fe enrichment based on exchange between the protein's Fe–S clusters and exogenous Fe ions. Through a combination of inductively coupled plasma mass spectrometric and 57Fe Mössbauer spectroscopic analysis, we show that, of the two [Fe4S4] clusters in BtrN (a Twitch-domain-containing radical S-adenosyl-L-methionine (SAM) enzyme), the Fe ions in the SAM-binding cluster undergo faster exchange with exogenous Fe2+; the auxiliary cluster is essentially inert under the reaction conditions. …”
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Power supply for a smart contact lens 1 by Zhang, Beibei

“…This innovative design incorporates a series of Prussian blue nanoparticle-shaped flexible electrodes serving as cathodes and anodes, enabling the power supply to operate optimally with sodium ions (Na+) and potassium ions (K+) without necessitating supplementary encapsulation. …”
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Thermoreversible gelation and viscoelasticity of κ-carrageenan hydrogels by Liu, Sijun, Huang, Sheng, Li, Lin

“…The presence of potassium ions shifted the formation and melting temperatures of κ-carrageenan hydrogel to higher temperatures, and the temperatures for gel formation and melting increased with increasing potassium ions' content.…”
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0.94(K0.5Na0.5)NbO3–0.06LiNbO3 piezoelectric ceramics prepared from the solid state reaction modified with polyvinylpyrrolidone (PVP) of different molecular weights by Tan, Chee Kiang Ivan, Yao, Kui, Goh, Phoi Chin, Ma, Jan

“…The effects of PVP for suppressing the loss of alkali ions, promoting the perovskite phase formation, and improving the piezoelectric properties were characterized and discussed. …”
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Converting sewage sludge into bio-fertiliser by Neo, Suat Leng.

“…The conversion is to stabilise the sewage sludge which may contain heavy metals and inorganic ions, volatiles and toxic organic compounds, and pathogen micro-organisms.…”
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TiN-Mediated Multi-Level Negative Photoconductance of the ZrO2 Breakdown Path by Zhou, Yu, Kawashima, Tomohito, Ang, Diing Shenp

“…A negative voltage-bias expels the Ti ions back to the electrode and restores the NPC response.…”
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Revisiting metal electrodeposition in porous anodic alumina: toward tailored preparation of metal nanotube arrays by Zhang, Aiqin, Zhou, Jiajing, Das, Paramita, Xiao, Yuanhua, Gong, Feilong, Li, Feng, Wang, Lizhen, Zhang, Linsen, Wang, Lixia, Cao, Yang, Duan, Hongwei

“…Metal electrodeposition in porous anodic aluminum oxide (AAO) is a complicated and multi-step process, consisting of diffusion of metal ions in the pores, reduction of metal ions and crystallization of metal atoms. …”
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Investigation of the effects of codeposition of tin on the suppression of hydrogen evolution in nickel electrodeposition system by Tan, Ronald Teck Ee

“…Concentration of tin was varied to investigate the hydrogen suppression effects by tin co-deposition; however it was discovered that tin ions will form oxides which are insoluble. Adding MSA and HQ will inhibit tin oxides formation, thus ensuring availability of tin ions for deposition. …”
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Charging mechanism of Li2MnO3 by Guerrini, N, Jin, L, Lozano, JG, Luo, K, Sobkowiak, A, Tsuruta, K, Massel, F, Duda, L-C, Roberts, MR, Bruce, PG

“…Operando mass spectroscopy demonstrates quantitatively that lithium extraction from Li2MnO3 is charge compensated by oxygen loss (O-loss) not oxidation of oxide ions that are retained within the structural framework (O-redox). …”

Sorption mechanisms of divalent cations with titanate nanotube by Du, Jianhong

“…The occurrence of heavy metal ions in industrial wastewater discharges is a pertinent issue. …”
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A manganese–ferritin nanocomposite as an ultrasensitive T2 contrast agent by Sana, Barindra, Poh, Chueh Loo, Lim, Sierin

“…We report a strategy for developing a T2 contrast agent from paramagnetic metal ions synthesized within an engineered protein cage. …”
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Isolation and characterisation of a novel cysteine-rich peptide from momordica charantia seeds by Low, Ee Lynn

“…Trypsin and chymotrypsin digestion was done for manual de novo sequencing of the peptide via b-ions and y-ions assignment. De novo sequencing resulted in proposed sequences for two fragments of the peptide. …”
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Effect of dye modification on the sorption of copper by coconut husk by Low, K. S., Lee, C. K., Wong, S. L.

“…The effects of some common chelators and other metal ions on Cu sorption were also studied. The equilibrium data obey the Langmuir isotherms for the natural and dye-coated husk-Cu systems. …”

Effects of inorganic salts on the phase separation of partially miscible solutes by Zhao, Dong-Yu, Ding, Bin, Zhu, Chuan-Yong, Gong, Liang, Duan, Fei

“…The phase separation behavior under different inorganic salt systems shows a similar trend. However, calcium ions and Fe3+ ions in the solutions can greatly decrease the rate of droplet coalescence and result in an increase in phase separation. …”
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Preparation of Nd-Fe-B/α-Fe nanocomposite by chemical reduction method by Lim, Darryl Yu Zhi.

“…Reduction of Fe2+ and Nd3+ ions were achieved by using BH4- ions followed by heat treatment to obtain the desire phase. …”
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High yield synthesis of graphene quantum dots from biomass waste as a highly selective probe for Fe3+ sensing by Abbas, Aumber, Tabish, Tanveer A., Bull, Steve J., Lim, Tuti Mariana, Phan, Anh N.

“…These modified GQDs are used for the highly selective and sensitive sensing of ferric ions (Fe3+). A sensitive sensor is prepared for the selective detection of Fe3+ ions with a detection limit of as low as 2.5 × 10–6 M. …”
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Suitability of pressmud as an adsorption material in wastewater treatment and as a booster in soil fertility and productivity by Mohamad, Maheera, Osman, Nor Hasni, Abdul Rahim, Mohd Kamarul Irwan

“…Based on the removal efficiency test, pressmud successfully removed the metal ions at the highest value such as Zinc (Zn) at 99.7%. …”
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Scalable fabrication of graphene-based laminate membranes for liquid and gas separations by crosslinking-induced gelation and doctor-blade casting by Yang, Euntae, Karahan, H. Enis, Goh, Kunli, Chuah, Chong Yang, Wang, Rong, Bae, Tae-Hyun

“…Herein, we report the fabrication of large-area (1333 cm2) GO-based membranes via doctor-blade casting of gel-like slurries prepared by incorporating calcium ions (Ca2+), ferric ions (Fe3+), polyethylene oxide (PEO), or polyethyleneimine (PEI) as crosslinkers. …”
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Template-free formation of uniform urchin-like α-FeOOH hollow spheres with superior capability for water treatment by Wang, Bao, Wu, Hao Bin, Yu, Le, Xu, Rong, Lim, Teik-Thye, Lou, David Xiong Wen

“…When evaluated for the potential use in water treatment, it is found that the as-obtained uniform urchin-like α-FeOOH hollow spheres exhibit excellent capability for removing both organic dye and heavy metal ions in waste water.…”
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Rectified and Salt Concentration Dependent Wetting of Hydrophobic Nanopores by Polster, Jake W, Aydin, Fikret, de Souza, J Pedro, Bazant, Martin Z, Pham, Tuan Anh, Siwy, Zuzanna S

“…Here we show a hydrophobic nanopore system whose wetting and ability to transport water and ions is rectified and can be controlled with salt concentration. …”
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