Boosting Capacitive Deionization in MoS₂ via Interfacial Coordination Bonding and Intercalation-Induced Spacing Confinement

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Фев. 4, 2025

Capacitive deionization (CDI) is a green and promising technology for seawater desalination, with its capacity industrial application being severely hindered by efficient electrode materials. Layered molybdenum disulfide (MoS2) has garnered significant attention CDI applications, while performance hampered weak surface hydrophilicity, high interfacial resistance, sluggish electron transport. Herein, we introduce an intercalation dual-engineering strategy covalently functionalizing the hydrophilic pyridine groups within 1T-MoS2 layer (Py-MoS2); electron-rich interface expanded interlayer spacing been achieved synergistically. A state-of-the-art desalination of 43.92 mg g-1 exceptional cycling stability have achieved, surpassing all reported existing MoS2-based electrodes. Comprehensive characterization theoretical modeling reveal that engineered enhance ion affinity via coordination, accelerate charge transfer, expand ion-accessible sites MoS2 through intercalation-induced structural modulation. These synergistic effects dramatically boost adsorption kinetics, mass transfer efficiency, salt uptake Py-MoS2 application. Our work presents to promote 2D materials, paving new insights next-generation high-performance development.

Язык: Английский

---

Ultrashort and Vertically Aligned Channels: Boosted Lithium Selective Extraction via Hybrid Capacitive Deionization

Environmental Science & Technology, Год журнала: 2025, Номер unknown

Опубликована: Фев. 24, 2025

Hybrid capacitive deionization (HCDI) is energetically and operationally favorable for Li+ extraction from salt lake brines. The bottlenecks of current LiMn2O4 (LMO)-based electrodes are their limited adsorption rate capacity, caused by disordered electron/ion transport channels insufficient ion-accessible sites. Inspired selective ion uptake processes in mangroves, we propose the strategy, fabricating ultrashort, vertically aligned electrode to enhance performance HCDI. self-supporting graphene/LMO/bacterial cellulose featuring (VGLB) possesses sturdy framework, excellent electrical conductivity, fast channels, abundant available sites, enabling an ultrahigh 2.6 mg g-1 min-1 capacity up 33.9 with a high retention 91.62% after 100 cycles. VGLB also manifests superior selectivity various simulated brines purity recovered solution over 85%. Most importantly, enables low-grade brine Jingbian oil gas-produced water. We conduct finite element simulations study distribution disclose how microstructure influences performance. This approach put forward avenue structure design efficient both lakes HCDI application.

Язык: Английский

---

Solar Evaporators for Saline Water: Sustainable Clean Water Harvesting and Critical Mineral Resources Extraction

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Март 20, 2025

Solar-driven interfacial water evaporation (SIWE) can efficiently utilize solar energy to separate or extract various ions from saline water, providing an environmentally friendly, economical, and sustainable approach clean critical mineral resources harvesting. However, for ongoing practical implementation, solid salt accumulation at the interface will inevitably impair SIWE performance, while direct disposal of residual concentrated brine poses significant environmental risks. As such, advancing evaporators harvesting extraction is pivotal in resources–energy–environment nexus. Critically, this review spotlights latest research progress engineering nonselective salt-rejecting (NS-SRSEs) desalination, emphasizing structural design surface modification. We then delineate our endeavors aimed construction strategies selective salt-extraction (S-SESEs) getting access such as uranium lithium. Finally, current challenges opportunities are outlined high-value utilization NS-SRSE S-SESE real-world applications that balance high efficiency, durability, adaptability with a low impact. Looking ahead, we anticipate advancements promoting laboratory applications, contributing global efforts management recovery.

Язык: Английский

---

Co-doped Ni-PBA anchored on optimized ZIF-67-derived Co/N-doped hollow carbon framework for high-performance hybrid capacitive deionization

Separation and Purification Technology, Год журнала: 2024, Номер 358, С. 130257 - 130257

Опубликована: Окт. 28, 2024

Язык: Английский

---

Crafting an Exceptionally Redox-Active Organic Molecule Boasting Superior Electron Mobility for High-Performance Electrochemical Desalination

ACS Sustainable Chemistry & Engineering, Год журнала: 2024, Номер 12(44), С. 16434 - 16443

Опубликована: Окт. 21, 2024

Access to freshwater is crucial for a sustainable environment and human ecosystems. Hybrid capacitive deionization (HCDI) based on attractive pseudocapacitive reactions considered promising environmentally friendly energy-saving electrochemical desalination technology. However, the application of HCDI technology still limited, mainly due unsatisfactory ion adsorption ability electrode. Herein, we unveil an innovative redox-active organic molecule (PATD) that showcases outstanding properties desalination. Notably, integration C═O C═N groups in PATD promotes stable efficient reactions. Additionally, rigid molecular structure, combined with minimal HOMO–LUMO energy gap, ensures exceptional redox characteristics superior electron transfer capability molecule, which are substantiated by experimental evidence theoretical studies. As electrode, exhibits significant along excellent long-term stability, retaining 89.0% its capacitance after 5000 cycles NaCl aqueous solution. In practical applications, developed device incorporating electrode demonstrates remarkably high salt removal capacity 56.9 mg g–1, swift average rate 1.9 g–1 min–1, consistent regeneration performance while attaining reliable recovery, highlights prospects technologies.

Язык: Английский

---

A π-conjugated imine-rich organic material with exceptional pseudocapacitive properties for high-performance electrochemical desalination

Desalination, Год журнала: 2025, Номер unknown, С. 118817 - 118817

Опубликована: Март 1, 2025

Язык: Английский

---

Designing a dual-functional redox-active polymer electrode for high-efficiency electrochemical desalination

Desalination, Год журнала: 2025, Номер unknown, С. 118948 - 118948

Опубликована: Апрель 1, 2025

Язык: Английский

---

Adjusting physiochemical properties of active carbon to increase its capacitive performance on the volumetric basis

Desalination, Год журнала: 2025, Номер unknown, С. 118990 - 118990

Опубликована: Май 1, 2025

Язык: Английский

---