Inhibited Passivation by Bioinspired Cell Membrane Zn Interface for Zn-Air Batteries with Extended Temperature Adaptability.

Due to the slow dynamics of mass and charge transfer at Zn|electrolyte interface, the stable operation of Zn-air batteries (ZABs) is challenging, especially at low temperature. Herein, inspired by cell membrane, a hydrophilic-hydrophobic dual modulated Zn|electrolyte interface is constructed. This amphiphilic design enables the quasi-solid-state (QSS) ZABs to display a long-term cyclability of 180 h@50 mA cm at 25 °C.

Indium oxide with oxygen vacancies boosts O adsorption and activation for electrocatalytic HO production.

Oxygen reduction reaction the two-electron pathway (2e ORR) offers a sustainable opportunity for hydrogen peroxide (HO) production, but suffers from low selectivity. In this work, indium oxide with oxygen vacancies (InO) exhibits a HO selectivity close to 98% at 0.6 V RHE.

Highly Reversible Zn-Air Batteries Enabled by Tuned Valence Electron and Steric Hindrance on Atomic Fe-N-C Sites.

The bifunctional oxygen electrocatalyst is the Achilles' heel of achieving robust reversible Zn-air batteries (ZABs). Herein, durable bifunctional oxygen electrocatalysis in alkaline media is realized on atomic Fe-N-C sites reinforced by NiCoO (NiCoO@Fe/NC). Compared with that of pristine Fe/NC, the stability of the oxygen evolution reaction (OER) is increased 10 times and the oxygen reduction reaction (ORR) performance is also improved.

Built-in Electric Field Promotes Interfacial Adsorption and Activation of CO for C Products over a Wide Potential Window.

The unsatisfactory adsorption and activation of CO suppress electrochemical reduction over a wide potential window. Herein, the built-in electric field (BIEF) at the CeO/InO n-n heterostructure realizes the C (CO and HCOO) selectivity over 90.0% in a broad range of potentials from -0.

Long-cycle Zn-air batteries at high depth of discharge enabled by a robust Zn|electrolyte interface.

It is an urgent need to improve the depth of discharge (DOD) of Zn-air batteries (ZABs), considering that most reported ZABs with long cycle life are realized at low DOD (<1%). In this work, our solid-state ZABs achieved a long cycle life of more than 220 h at 3.2% DOD (the discharge capacity of 10 mA h cm per cycle).

Insight on Atomically Dispersed Cu Catalysts for Electrochemical CO Reduction.

Electrochemical CO reduction (ECOR) with renewable electricity is an advanced carbon conversion technology. At present, copper is the only metal to selectively convert CO into multicarbon (C) products. Among them, atomically dispersed (AD) Cu catalysts have received great attention due to the relatively single chemical environment, which are able to minimize the negative impact of morphology, valence state, and crystallographic properties, etc.

Highly efficient metal-organic frameworks adsorbent for Pd(II) and Au(III) recovery from solutions: Experiment and mechanism.

With the boom of modern industry, the demand for precious metals palladium (Pd) and gold (Au) is increasing. However, the discharge of Pd(II) and Au(III) wastewater has caused environmental pollution and shortage of resources. Here, a new metal-organic frameworks adsorbent (MOF-AFH) was synthesized to efficiently separate Pd(II) and Au(III) from the water.

Adenosine-functionalized UiO-66-NH to efficiently remove Pb(II) and Cr(VI) from aqueous solution: Thermodynamics, kinetics and isothermal adsorption.

A new zirconium-based adsorption material (UiO-66-AMP) was prepared by modifying UiO-66-NH with 5-adenosine to effectively remove Pb(II) and Cr(VI) from wastewater. The SEM, EDS, XRS and FT-IR characterization confirmed the successful synthesis of UiO-66-AMP. We conducted a sets of experiments to test the adsorption effectiveness of UiO-66-AMP for Pb(II) and Cr(VI).

Chitosan functionalized with N,N-(2-aminoethyl)pyridinedicarboxamide for selective adsorption of gold ions from wastewater.

The recovery of gold from wastewater has always been a research hotspot. Here, a novel chitosan-based adsorbent (CS-DPDM) was successfully synthesized by functionalizing chitosan with (N, N-(2-aminoethyl))-2,6-pyridinedicarboxamide. The adsorbent was analyzed by fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (H NMR), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD) and zeta potential method (Zeta).

Engineering of UiO-66-NH as selective and reusable adsorbent to enhance the removal of Au(III) from water: Kinetics, isotherm and thermodynamics.

Efficient removal of gold ions from wastewater has become a hot research topic. A new metal-organic framework material (PAR-UiO-66) was prepared by post-modification of UiO-66-NH. A series of characterizations proved the successful preparation of PAR-UiO-66.

Phenylthiosemicarbazide-functionalized UiO-66-NH as highly efficient adsorbent for the selective removal of lead from aqueous solutions.

A novel metal-organic framework (UiO-66-PTC) for efficient removal of Pb ions from wastewater has been prepared by using 4-phenyl-3-thiosemicarbazide as the modifier. Various characterizations showed that UiO-66-PTC was successfully synthesized. The absorption results showed that the maximum adsorption capacity of Pb(II) is 200.

Ninhydrin-functionalized chitosan for selective removal of Pb(II) ions: Characterization and adsorption performance.

A chitosan-based adsorbents (CS-Ninhydrin) was prepared by grafting ninhydrin for Pb(II) ions adsorption. SEM-EDS, XRD and FTIR analysis were used to characterize the synthesized CS-Ninhydrin. The static adsorption experiments showed that CS-Ninhydrin had a good removal rate for Pb(II) ions in a wide range of pH 3 to 7, quickly reached equilibrium (120 min) and had a higher adsorption capacity (196 mg/g).