Advanced capacitive deionization for ion selective separation: Insights into mechanism over a functional classification.

Due to the diversity and variability of harmful ions in polluted water bodies, the selective removal and separation for specific ions is of great significance in water purification and resource processes. Capacitive deionization (CDI), an emerging desalination technology, shows great potential to selectively remove harmful ionic pollutants and further recover valuable ions because of the simple operation and low energy consumption. Researchers have done a lot of work to investigate ion selectivity utilizing CDI, including both theoretical and experimental studies.

Preparation of paramagnetic ferroferric oxide-calcined layered double hydroxide core-shell adsorbent for selective removal of anionic pollutants.

Adsorption is one of the most common methods of pollution treatment. The selectivity for pollutants and recyclability of adsorbents are crucial to reduce the treatment cost. Layered double hydroxide (LDH) materials are one type of adsorbent with poor recyclability.

Recent Progress and Challenges in Faradic Capacitive Desalination: From Mechanism to Performance.

Due to substantial consumption and widespread contamination of the available freshwater resources, green, economical, and sustainable water recycling technologies are urgently needed. Recently, Faradic capacitive deionization (CDI), an emerging desalination technology, has shown great desalination potential due to its high salt removal ability, low consumption, and hardly any co-ion exclusion effect. However, the ion removal mechanisms and structure-property relationships of Faradic CDI are still unclear.

Nickel cobalt oxide nanowires with iron incorporation realizing a promising electrocatalytic oxygen evolution reaction.

Developing cost-effective electrocatalysts for water electrolysis is a promising strategy to enhance conversion and storage efficiency of sustainable energy. Transition metal oxides have been considered as alternative oxygen evolution reaction (OER) catalysts to replace noble metal-based catalysts. Here, we report a series of Fe-doped NiCoO (NCO) nanowires with different Fe-doped concentrations, synthesized by a facile solvothermal and calcinations process, as high-efficiency electrocatalysts for OER.

Controllable Synthesis of Fe-Doped NiCo O Nanobelts as Superior Catalysts for Oxygen Evolution Reaction.

As one of the promising clean and renewable technologies, water splitting has been a hot topic, especially the half-reaction of oxygen evolution reaction (OER) due to its sluggish and complex kinetics. Hence, Fe-doped NiCo O nanobelts were designed and prepared as catalysts toward OER. By increasing the Fe amount, the catalytic performances of the as-synthesized products went up and then decreased.

Enhancement of 3D BiMoO mesoporous spheres photocatalytic performance by vacancy engineering.

The three-dimensional BiMoO mesoporous architectures constructed by nanosheets were synthesized through solvothermal method. The photocatalytic efficiency for tetracycline (TC) by the pristine BiMO and the BMO-450 (pristine BiMO was calcined at 450 °C) reached 73% and 90% after 150 min light irradiation, respectively. Compared to the photocatalytic efficiency of pristine BiMoO, the BMO-450 exhibited much higher photocatalytic performance owing to the presence of oxygen vacancies obvious change the band structure of BMO-450.

Adjustable Ternary FeCoNi Nanohybrids for Enhanced Oxygen Evolution Reaction.

Water splitting as a greatly desired technology to produce clean renewable energy, but is hampered by the sluggish oxygen evolution reaction. So, the development of highly active and durable water oxidation electrocatalysts is of primarily significance for energy conversion. Here, a facial strategy to synthesize FeCoNi nanohybrids with adjustable morphological structures by using fluorine is introduced.