Perovskite oxides for electrochemical small-molecule oxidation: advances and mechanisms
This review highlights the application of perovskite oxides as electrocatalysts for small-molecule oxidation, focusing on their structure–performance relationships, defect engineering, and reaction mechanisms to guide efficient energy conversion.
Fe-assisted nitridation-induced reconstruction of Mo–Fe–Ni molybdates enables durable alkaline seawater oxygen evolution and Zn–air batteries
Fe-directed nitridation converts Mo–Fe–Ni molybdates into a conductive nitride–oxide heterostructure. The Fe activates ammonia, forming MoO2, Mo2N, FeN and Ni4N interfaces that enhances alkaline seawater OER and enable durable Zn–air batteries.
Pr6O11-driven electron modulation via d-f orbital hybridization for alkaline seawater electrolysis
Interfacial C–S bonding stabilizes phase-tailored Ni heterosulfides on carbon nanofibers for bifunctional electrolytic water splitting
Three-phase Ni3S4/NiS/Ni heterojunction on 3D carbon nanofibers enables fast charge transport, abundant active sites, and strong interfacial bonding, delivering efficient and durable bifunctional catalysis for alkaline hydrogen and oxygen evolution.
Constructing a composite catalyst containing amorphous nickel hydroxide/crystalline lanthanum carbonate hydroxide for urea electrolysis
Upcycled Ni–Co–Mn oxide bifunctional electrocatalyst from spent LIBs for electrochemical water splitting
Upcycling spent lithium-ion battery cathodes via DES recycling yields a Ni–Co–Mn oxide electrocatalyst with bifunctional activity for alkaline–saline water splitting, highlighting a sustainable waste-to-green hydrogen strategy.
Unveiling the potential of pristine and metal-doped biochar for improved fermentative biohydrogen production from whey wastewater
Ni-doped cow-dung derived biochar enhanced dark fermentative hydrogen production from whey wastewater by promoting microbial attachment, EPS secretion, and extracellular electron transfer, resulting in improved hydrogen yield and COD removal.
Optimising an electron-rich 2D Fe,B-Ti3C2Tx/N-doped mixed metal oxide interface for industrial-scale oxygen evolution in seawater
This research develops a stable, high-performance electrocatalyst with an electron-rich interface between modified MXene and nitrogen-doped nickel molybdenum oxide, enabling efficient high-current operation while suppressing chlorine evolution.
Dual-MOF-derived Ni@Fe-based core–shell heterostructures as trifunctional catalysts for methanol valorization-coupled H2 production via hybrid water electrolysis
Ni- and Fe-based dual MOF-derived trifunctional core–shell Ni2P@Fe2P/NF is developed enabling the fabrication of a methanol-assisted hybrid electrolyzer for low-cost H2 generation at cathode and subsequent methanol-to-formate valorization at anode.
Pt single atoms/g-C3N4 photocatalysts enabling simultaneous H2 production and CO2 absorption through formic acid photoreforming
A Pt single-atom catalyst anchored on g-C3N4 enables efficient formic acid oxidation.
Synthesis of visible-light-responsive YbTaO4−xNy via different work function metal-assisted nitridation for photocatalytic overall water splitting
YbTaO4−xNy(M) synthesized via nitridation assisted by three different work function metal powders (Mg, Zr, Al) exhibits varied absorption band edges and visible-light-driven water splitting performance.
S-scheme-mediated Ce-NSO/Ce-gCN heterostructure for enhanced photocatalytic hydrogen evolution via sea water splitting
The Ce-NSO/Ce-gCN S-scheme-based heterojunction developed in this study is capable of sustaining high HER in seawater under visible-light irradiation.
Post-polymerization modification towards polymer-supported metalloporphyrins for heterogeneous electrocatalysis
A one-pot synthesis of polymer-supported metalloporphyrin catalysts is demonstrated. The random-coil polymer chain allows coordination of axial ligands and distal groups to the active centre, thereby enhancing electrochemical catalysis performance.
About this collection
This Nanoscale and Journal of Materials Chemistry A themed collection on Advanced Nanomaterials for Sustainable Green Hydrogen Production is guest edited by Veronica Sofianos (University College Dublin, Ireland), Serena Cussen (University College Dublin, Ireland), Vasileios Tzitzios (NCSR 'Demokritos', Greece), Paul Westerhoff (Arizona State University, USA), and Helena Wang (The University of Melbourne, Australia).
As the world transitions to a sustainable energy future, green hydrogen stands out as a clean, carbon-free energy carrier. However, traditional green hydrogen production relies heavily on freshwater, a limited and increasingly precious resource. Conventional water splitting competes with agriculture and human consumption for freshwater resources. Shifting to non-traditional water sources like seawater and wastewater can alleviate this competition, ensuring that green hydrogen production does not compromise essential water needs. This has spurred growing interest in using seawater and wastewater as alternative feedstocks. Their utilization not only conserves freshwater but also offers additional environmental and economic benefits, making them critical to the scalable and sustainable production of green hydrogen.