Direct seawater electrolysis (DSE) is extremely promising for green hydrogen production as it avoids using scarce freshwater resources, but it faces inherent challenges including slow hydrogen evolution reaction (HER) kinetics at the cathode, active-site blockage by insoluble Mg 2+ /Ca 2+ hydroxides precipitation and chloride corrosion. Herein, we report a high performance HER electrode based on Pt@Co(OH) 2 nanoarrays supported on Nickel foam for DSE, where the dual-catalytic sites on Pt and Co adsorbed ⁎H and ⁎OH, respectively, efficiently promoting water dissociation. The electronic interaction between Pt and Co facilitated the desorption of ⁎H and inhibited the adsorption of Cl - on the electrode. Moreover, positively charged Pt@Co(OH) 2 nanoarrays significantly suppressed Mg 2+ /Ca 2+ migration to the electrode surface, and the ordered pore structure enabled efficient bubble-induced removal of possible precipitation. A pH-asymmetric electrolyzer was assembled with the cathode that achieved a benchmark current density of 100 mA cm -2 with a low voltage of 1.675 V at 80 ℃, and it operated continuously for 1000 hours at 100, 200, 500, 800 and 1000 mA cm -2 without significant degradation. This work provides a synergistic strategy to simultaneously overcome the persistent challenges of reactivity and stability of the cathode in DSE, enabling sustainable industrial-scale green hydrogen production. Pt@Co(OH) 2 nanoarrays supported on nickel foam have been fabricated and comprehensively studied as an enabling electrode for hydrogen evolution reaction in direct seawater electrolysis. The dual-catalytic sites on Pt and Co efficiently promoted water dissociation, and the electronic interaction between Pt and Co inhibited the adsorption of Cl - on the electrode. Positively charged Pt@Co(OH) 2 nanoarrays suppressed Mg 2+ /Ca 2+ migration to the electrode surface, and the ordered pore structure enabled efficient bubble-induced removal of possible precipitation. • Pt@Co(OH) 2 nanoarrays are grown on nickel foam as an enabling cathode for seawater electrolysis. • The positively charged Co(OH) 2 on the cathode repels cations and inhibits hydroxide deposits. • Pt-Co dual catalytic sites cooperatively promote water dissociation and enhance hydrogen production kinetics. • The electronic interaction between Pt and Co weakens Cl - adsorption and boosts corrosion resistance in seawater. • An electrolyzer employed the cathode achieved stable operation at industrial current densities over 1000 h.

pH as a key driver of green chemicals production in agroindustrial waste fermentation

Keep it local vs. financial benefits: Compensation payments through cost savings in renewable energy provision for green hydrogen production in Germany

Prussian blue analogue derived trimetallic nickel-cobalt-iron phosphide nanocubes coupled with molybdenum carbide heterostructures for overall water splitting.

Comprehensive strategy through regulating specific atomic orbitals of electrocatalytic sites by heteronuclear double-atom doping for improving alkaline hydrogen evolution reaction.

Electrocatalytic upcycling of textile wastewater and green hydrogen production using WSe2/Ti3C2Tx||PCE electrode in a circular economy approach

Mesopore-confined Ni nanoparticles on stable aluminosilicate synthesized using natural cellulose template for green diesel production from Calophyllum inophyllum Oil

Enhancing the seawater hydrogen evolution performance of Ni-Cr-Fe-Mo heterojunctions using pore-forming agents.

Multimetallic site engineering is emerging as a powerful strategy to regulate electronic structure and reaction pathways in complex multielectron electrocatalytic systems, such as electrocatalytic nitrate reduction. Here, we report the rational design of transition metal-doped CoWO 4 (M-CoWO 4 , M = Cu, Fe, Ni) integrated into 3D-printed octet lattice electrodes for the electrochemical conversion of nitrate to ammonia (NO 3 ⁻-to-NH 3 ) coupled glycerol oxidation (GOR). Systematic experiments, in situ Raman analysis and density functional theory calculations reveal that metal doping modulates the electronic environment around active sites through charge redistribution, thereby tuning intermediate adsorption and catalytic performance. Cu doping enhances NOₓ⁻ adsorption and lowers the energy barrier for sequential protonation steps, accounting for the superior ammonia production rate (~2 mmol cm -2 h -1 ) and high Faradaic efficiency (95%). By contrast, Fe doping preferentially enhances oxidative catalysis, including OER and GOR. In a full-cell configuration, GOR-coupled nitrate reduction decreases power consumption by ~22% and boosts NH 3 yield rate by 2.5-fold relative to the conventional NITRR||OER system. This study reveals that strategic metal doping in CoWO 4 tunes its electronic structure to promote energy-efficient NO 3 ⁻-to-NH 3 conversion coupled with glycerol oxidation, offering a sustainable pathway toward green ammonia production. • Micro/nanoplastics threaten ecosystems due to synthetic polymeric product usage. • Magnetically actuated microrods actively target nanoplastics in water. • Microrobotic approach enables externally controllable water remediation processes.

Enhanced environmental stress tolerance in reoccurring, emerging, and persistent (REP) Escherichia coli O157:H7 strains from leafy green associated outbreaks.

It is urgent to develop non precious metal electrode materials with significant efficiency and ultrahigh stability to meet the growing demand for renewable energy conversion devices. Herein, heterogeneous nickel-iron sulfide decorated nitrogen-doped-graphene ((Ni,Fe)-Sx-Fe/NGr) with regulated local electronic structure, rich defects, and honeycomb shaped geometric form is synthesized using facile solvothermal and annealing phase transition technology. The obtained target catalyst was characterized for use in a water splitting device, revealing that (Ni,Fe)-Sx-Fe/NGr has lower overpotentials (203 (OER)/166 mV (HER)) for oxygen and hydrogen evolution reaction (OER and HER) compared to NiFeSx (235 (OER)/235 mV (HER)) and NiFe LDH (255 (OER)/308 mV (HER)) at 10 mA/cm2, as well as most reported electrode materials. Meanwhile, (Ni,Fe)-Sx-Fe/NGr demonstrated excellent geometric/chemical stability after 210 h long-term stability testing. Typically, as a dual-functional overall water-splitting electrode, (Ni,Fe)-Sx-Fe/NGr demonstrates lower driving voltage (1.44 V) and considerable stability (110 h) at 10 mA/cm2. Therefore, the developed bimetallic sulfide coupled nitrogen doped graphene with notable activity and stability provides a reference for green and efficient industrial production of green hydrogen.

Green ammonia is attracting attention as a way of realizing a decarbonized society. In this study, we designed a green ammonia production process under limited power supply. In conventional process optimization, candidates for the design variables are selected based on the experience of the process engineer and calculation results, and optimization is performed by repeated simulations. However, as the number of design variables increases, an enormous number of simulations are required to search for optimal candidates. In this study, we used Bayesian optimization to select candidates for the design variables with a high probability of achieving the target values of the objective variables. Candidate selection and simulation were repeated to maximize green ammonia production with limited power supply. The process was compared with previously reported green ammonia production processes, which showed that the process designed in this study produced the maximum amount of green ammonia at ≤ 10MW.

• A Python model for semi-islanded green ammonia production was developed. • The LCOA ranges from 669.30 to 867.94 €/tNH 3 . • Power generation represents the largest share of total system costs. • The LCOA decreases by up to 15.15 % over the next two decades. • Dynamic operation achieves up to a 6 % reduction compared with continuous operation. The study presents a technical and economic assessment of green ammonia production in several counties in Ireland. The system is based on renewable energy sources, namely photovoltaic and offshore wind. Three locations were chosen based on their renewable potential and the availability of export ports to EU (European Union) markets. A high-temporal-resolution model for green ammonia production has been developed for the first time in Ireland. The WSA (Wind Solar Ammonia) model was developed specifically for this research. It uses MILP (Mixed Integer Linear Programming) and optimisation techniques to simulate scenarios at the lowest possible cost. The Python-based model incorporates all relevant energy subsystems and use functions from specialised libraries. The WSA model includes large-scale hydrogen production with proton exchange membrane electrolysers, air separation to produce nitrogen, Haber-Bosch ammonia synthesis, desalination unit. Storages buffers were implemented for green hydrogen, green ammonia, purified sea water, and nitrogen. Both continuous and dynamic operation were simulated, continuous operation reflects industrial reliability, stable equipment performance, and maximised lifetime, while dynamic operation captures renewable intermittency, curtailment reduction, and system flexibility. Cork is identified as the least-cost location, with the dynamic operation system achieving the lowest LCOA (Levelised Cost Of Ammonia) at 791.07 €/t in 2030 and 731.45 €/t in 2040, outperforming the continuous operation system, which records 834.27 €/t in 2030 and 741.62 €/t in 2040. The system achieve a carbon saving up to 94.63 % compared to the ammonia fossil fuel-based comparator.

Can environmental, social, and governance rating divergence harm the green total factor productivity? Evidence from Chinese listed firms.

How the integration of technology and finance empowers the collaborative development of digitalization and greenization of Chinese cities

The global climate crisis requires immediate and comprehensive action to reduce greenhouse gas emissions and limit global temperature rises "well below" 2°C. The UK has committed to reaching Net Zero by 2050 (Scotland 2045) with several policies proposed to achieve this goal and ambitious aims to decarbonise whole industries. The UK marine environment is expanding its activities and capitalising on blue growth. Here, we review current marine policies in the context of Net Zero and find that, despite the proliferation of Net Zero policies, there are crucial gaps impeding how Net Zero will be achieved in the marine environment. With the increasing demand for ocean space and the transition to Net Zero, conflicts have arisen between the drive for green energy through offshore wind (OSW) and maintaining space for existing marine users. Better protection and restoration of blue carbon sites and environmental protection targets will be required to meet Net Zero but could lead to further spatial squeeze. Synergies between marine sectors have emerged or are being considered, which may reduce tensions as industries look to expand to achieve Net Zero, e.g. OSW accommodating certain types of fishing, decarbonising oil and gas production, and decommissioned oil and gas infrastructure being repurposed for green energy production or carbon capture and storage. As marine industries expand and decarbonise, trade-offs are likely, and it remains to be seen whether Net Zero will be prioritised, or if policy gaps and outdated policies will impact the UK meeting its legal Net Zero obligations.

This study aims to reveal the contribution of the Ciwaringin Batik Cooperative in the standardization process and the implementation of green marketing concepts to support the aspirations of the local batik industry. The study employed a qualitative approach with a case study design. Data collection was conducted through in-depth interviews, direct field observations, and document review involving cooperative administrators, artisan members, and other relevant parties. The results of this study indicate that the cooperative plays a crucial role in driving environmentally friendly production standards, increasing member capacity, and developing a marketing network that emphasizes ecological values. Through its various programs, the cooperative has been able to encourage the use of natural dyes as a substitute for chemicals, establish an internal certification system, and strengthen the image of green batik products, thus enhancing their competitiveness in the market. On the other hand, this study also identified several obstacles, including limited capital, low understanding of environmentally friendly products by local consumers, and inadequate support from local government policies. This research contributes to the development of a cooperative institutional model as a means of transforming the local creative industry into a more attractive business practice.

Techno-economic analysis, energy, exergy and environmental assessment of green methanol production via solar-driven gasification of corn stalk using Aspen Plus simulation

Role of transition metal-based structures for sustainable green hydrogen production from alkaline seawater electrolysis (ASWE): Challenges and recent advancements

Optimization of renewable power-to-hydrogen systems for green ammonia production in Malaysia