As a promising and important carbon source, utilization of carbon dioxide (CO₂) can effectively solve the energy crisis caused by fossil resource consumption and the environmental problems arising from the emission of CO₂.

For the first time, a new lead-free double perovskite Cs₂NaBiI₆ material was synthesized and applied to the perovskite solar cells.

A Co-based MOF supported on Ti ₃ C ₂ MXene was prepared via in situ growth, which can efficiently reduce nitrogen to ammonia under environmental conditions.

Compared with the traditional Haber–Bosch process, electrochemical ammonia synthesis has attracted much attention owing to its low energy consumption, low pollution potential, and sustainability. However, owing to the influence of high overpotential and low selectivity, the nitrogen reduction reaction (NRR) process was of limited applicability in industry. Here, we report a high-performance Ru@Ti₃C₂ MXene catalyst for an ambient electrocatalytic NRR. In a 0.1 M KOH electrolyte, the NH₃ yield of the Ru@MXene catalyst reached 2.3 μmol h⁻¹ cm⁻², furthermore, at −0.4 V (vs. RHE) the Faraday efficiency was 13.13%.

Hydrogen production by electrochemical hydrogen evolution reaction (HER) using eco-friendly seawater electrolysis can help address the energy shortage.