Journals
2025 EN
Li Zixiao · Zuo Wei · Liu Chaozhen
+14 more
Abstract Renewable energy‐powered seawater electrolysis is a green and attractive technique for producing high‐purity hydrogen. However, severe chlorideions (Cl − ) and their derivatives tend to corrode anodic catalysts at ampere‐level current densities and hinder the application of seawater‐to‐H 2 systems. Herein, a polycalmagite (PCM)‐coated NiFe layered double hydroxide is presented on Ni foam (NiFe LDH@PCM/NF) that exhibits exceptional stability in alkaline seawater. PCM not only acts as a conductive layer to reduce charge transfer resistance of the anodes but also as a polymer‐based protective layer to inhibit Cl − adsorption and stabilize metal ions oxidation due to its own anions and strong adhesion, thereby increasing activity and stability during alkaline seawater. Thus, NiFe LDH@PCM/NF only needs a low overpotential of 364 mV to reach up to 1000 mA cm −2 and maintains operation for 500 h without activity degradation. Moreover, a minimal amount of hypochlorite can be detected in electrolyte after a 500‐h stability test. This development affords a significant exploration in creating durable and efficient anodes, highlighting the importance of polymer coating toward anti‐corrosion in alkaline seawater oxidation.
Journals
2025 EN
Yao Yongchao · Zou Chang · Sun Shengjun
+12 more
Abstract Hydrogen is an essential energy resource, playing a pivotal role in advancing a sustainable future. Electrolysis of seawater shows great potential for large‐scale hydrogen production but encounters challenges such as electrode corrosion caused by chlorine evolution. Herein, a durable CoCO 3 /CoFe layered double hydroxide (LDH) electrocatalyst is presented for alkaline seawater oxidation, showcasing resistance to corrosion and stable operation exceeding 1,000 h at a high current density of 1 A cm −2 . The results indicate that CoCO 3 within the electrocatalyst undergoes conversion into CoOOH and releases CO 3 2− during electrolysis. The incorporation of CO 3 2− within its layers and the anchoring of the electrocatalyst's surface prevent the adverse adsorption of chloride ions, enhancing resistance to chloride ion corrosion, thereby protecting the active sites of the electrocatalyst effectively.
Journals
2025 EN
Ibrahim Kassa Belay · Harrath Karim · Hamrang Mohammadhossein
+11 more
Abstract The urea oxidation reaction (UOR), with its low thermodynamic potential, offers a promising alternative to the oxygen evolution reaction (OER) for efficient hydrogen production. However, its sluggish kinetics still demand the development of an efficient electrocatalyst. In this study, the critical role of Ru doping in Fe₂TiO₅ is demonstrated to accelerate UOR kinetics. The computational finding confirmed the feasibility of this approach, guiding the experimental synthesis of Fe 2−x Ru x TiO 5 . Benefitting from surface properties and electronic structure, the synthesized material exhibits superior performance with a potential of 1.30 V at a current density of 10 mA cm −2 for UOR, compared to undoped Fe2TiO5 (1.40 V). Moreover, it demonstrates a favourable Tafel slope of 52 mV dec −1 and maintains robust durability for 72 h. As confirmed from experimental and computational findings, the enhanced activity can be attributed to the Ru doping resulting in structural distortion at the Fe site and creation of a favourable adsorption site thereby enhancing UOR via dual active center. This study not only broadens the potential applications of Fe2TiO5‐based materials beyond their traditional role as photocatalysts but also establishes them as promising electrocatalysts underscoring the versatility and improved performance of Fe 2−x Ru x TiO 5 .
Journals
2025 EN
Pal Vaibhav · Gupta Deepak · Liu Suihong
+6 more
Abstract Microgels offer unique advantages over bulk hydrogels due to their improved diffusion limits for oxygen and nutrients. Particularly, stimuli‐responsive microgels with inherently bioactive and self‐supporting properties emerge as highly promising biomaterials. This study unveils the development of interparticle‐crosslinked, self‐supporting, ion‐responsive microgels tailored for 3D and 4D (bio)printing applications. A novel strategy is proposed to develop microgels that enabled interparticle crosslinking, eliminating the need for filler hydrogels and preserving essential microscale void spaces to support cell migration and vascularization. Additionally, these microgels possessed unique, ion‐responsive shrinking behavior primarily by the Hofmeister effect, reversible upon the removal of the stimulus. Fabricated microgel‐based constructs supported angiogenesis with tunable vessel size based‐on interstitial void spaces while demonstrating excellent shear‐thinning, self‐healing properties and high print fidelity. Various bioprinting techniques are employed and validated using these microgels, including extrusion‐based, embedded, intraembedded, and aspiration‐assisted bioprinting, facilitating the biofabrication of scalable constructs. Multi‐material 4D printing is achieved by combining ion‐responsive microgels with non‐responsive microgels, enabling programmable shape transformations upon exposure to ionic solutions. Utilizing 4D printing, complex, dynamic structures are generated such as coiling filaments, grippers, and folding sheets, providing a foundation for the development of advanced tissue models and devices for regenerative medicine and soft‐robotics, respectively.
Journals
2025 EN
Fang Xiang · Ye Chun · Zhuang Weihua
+10 more
Abstract Seawater electrolysis powered by offshore renewable energy, provides an attractive approach for green hydrogen production. Yet, the abundant chloride ions (Cl⁻) in seawater pose severe challenges to the long‐term stability of anode materials, particularly under industrial current densities. Herein, a high‐coverage Ce(OH)₃‐decorated nickel‐iron layered double hydroxide (NiFe LDH) electrocatalyst is reported, in which Ce(OH)₃ undergoes in situ transformation into CeO₂ during alkaline seawater oxidation (ASO), forming a robust protective layer that effectively repels Cl⁻. The as‐prepared catalyst delivers an overpotential of only 321 mV at 1 A cm⁻ 2 and maintains exceptional operational stability for over 1000 h with negligible chlorine evolution. Furthermore, the catalyst exhibits accelerated bubble detachment behavior, facilitating rapid gas release and effectively reducing mass transfer resistance during ASO.
Journals
2025 EN
Hussain Muzammil · Ibrahim Kassa Belay · RodríguezCastellón Enrique
+7 more
Abstract Solar desalination is an emerging technique to produce fresh water utilizing renewable solar energy. However, the engineering of efficient photothermal material is a significant obstacle. In the present study, a carbon foam is synthesized from the upcycling of waste PET and hydrothermally functionalized with a heterostructure composed of Cu 3 SbS 4 and Sb 2 S 3 . Material characterizations demonstrated the successful decoration of nanochannels on graphitic carbon foam (CF). The analysis of the optical properties in the UV/Vis‐NIR spectral range demonstrated excellent absorption properties of 96% for Cu 3 SbS 4 ‐Sb 2 S 3 /CF compared to Sb 2 S 3 /CF (48%) and CF (68%) in near‐IR. Photothermal desalination results reveal the evaporation rate of 2.82 kg m −2 h −1 for Cu 3 SbS 4 ‐Sb 2 S 3 /CF compared to 1.4 kg m −2 h −1 for Sb 2 S 3 /CF and 1.58 kg m −2 h −1 for CF, with 99% salt removal in condensed water. The formation of the composite leads to a high surface temperature and enhanced evaporation rate. The contact angle analysis confirmed the hydrophilic nature of the material that plays a crucial role in the solar desalination process. These findings elucidate the effective photothermal performance achieved through chalcogenide heterostructure engineering supported on upcycled carbon foam derived from waste PET, demonstrating a practical application aligned with circular economy principles in solar desalination.
Journals
2025 EN
Hassan Mahnoor · Shifa Tofik Ahmed · Vomiero Alberto
+2 more
Abstract Liquid luminescent solar concentrators (liquid LSCs) have emerged as a promising alternative to conventional solid‐state LSCs for enhancing solar energy harvesting. This review focuses primarily on the two major types of LSCs: liquid‐based and thin‐film‐based systems. By comparing their respective advantages and limitations, it aims to identify how specific performance gaps, such as optical efficiency, quantum yield, scalability, recyclability, ease of fabrication, and cost can be addressed by one type over the other. Particular emphasis is placed on liquid LSCs, which, unlike their solid thin‐film counterparts, offer unique benefits such as solution‐processability, facile large‐area coverage, self‐healing potential, and material reusability. However, despite these benefits, research in this area remains scarce, with relatively few studies published to date. This review aims to provide a comprehensive overview of the recent developments in liquid LSCs, covering fundamental operating principles, key performance metrics, and major advances in luminescent materials, matrix design, and device architectures. Explored potential applications in sustainable energy systems are also reported. This review concludes by discussing ongoing challenges like stability, leakage, and contamination, and presenting future directions highlighting the promise of this underexplored field.
Journals
2025 EN
Abdelsalam IbrahiM · Wang Shiqi · Santos Hugo L. S.
+7 more
Abstract The rational design of electrocatalysts that efficiently harness plasmonic excitation for electrocatalytic hydrogen production from water remains challenging. Here, guided by density functional theory (DFT) predictions, anisotropic AuPt nanowires are systematically synthesized with precise monolayer and submonolayer Pt surface coverage on Au nanowire templates. Under visible‐light‐driven plasmonic excitation, these catalysts exhibited high hydrogen evolution reaction (HER) activity, achieving mass activities up to 9.3 A mg −1 Pt at −0.05 V vs RHE, representing a ≈7‐fold enhancement over commercial Pt/C catalysts and surpassing spherical AuPt nanoparticles. Detailed electron microscopy, spectroscopy, and electrochemical analyses indicated that the submonolayer Pt coverage provided more isolated catalytic sites, optimal electronic coupling, and preserved plasmonic properties. DFT calculations reveal pronounced electronic redistribution at Au–Pt interfaces, raise Pt d‐band centers, and ideal Gibbs free energies for hydrogen adsorption. This synergistic combination of catalytic and plasmonic properties represents a promising strategy to substantially reduce precious metal usage without compromising catalytic performance, offering a robust framework for designing electrocatalysts for renewable energy conversion.
Journals
2025 EN
Ibrahim Kassa Belay · Harrath Karim · Hamrang Mohammadhossein
+11 more
Water Splitting Ruthenium doping in Fe 2 TiO 5 significantly enhances the kinetics of the urea oxidation reaction by introducing structural distortions and generating more favourable adsorption sites for intermediates. The optimized Fe 2−x Ru x TiO 5 catalyst exhibits a markedly lower onset potential and excellent long‐term stability, highlighting its strong potential as an efficient and durable electrocatalyst beyond its conventional photocatalytic applications. More in article number 2412370, Kassa Belay Ibrahim, Alberto Vomiero, Elisa Moretti, Tofik Ahmed Shifa, and co‐workers.
Journals
2025 EN
Algamdi Shabbab Ali · Khan Abdul Wahid · Ahmad Jamshid
+1 more
ABSTRACT Strong cybersecurity procedures are now more important than ever due to the increased reliance on remote workers. Given the dynamic nature of cyber threats and the necessity of preventative actions, this paper highlights the vital significance of thorough cybersecurity awareness training for remote workers. A customized cybersecurity awareness training model can improve distributed team preparedness and decrease cyberattacks. Organizations should institute regular security awareness programs to educate distributed teams on emerging cyber threats. Vendor businesses should prioritize security education to prevent cyberattacks and protect sensitive data. Our proposed model aims to improve distributed team members' preparedness against cyber threats, enabling organizations to safeguard remote work settings effectively. Our systematic literature review identified key cybersecurity factors, synthesized into 12 groups, including “Unified Governance Framework” and “Secure Mind Initiative.”