MOF derived metal oxide composites and their applications in energy storage

Cao

2023

ACS Appl. Nano Mater.

Hypoxia, overexpression of endogenous hydrogen peroxide (H 2 O 2 ), and dysregulation of glutathione (GSH) severely impair the efficacy of photodynamic therapy (PDT) in various cancer treatments. Herein, we construct a nanoscale multivariate metal−organic framework (MTV-MOF) by coordination chelation between Mn/Fe clusters and meso-tetra(4-carboxyphenyl)porphine (TCPP-H 2 ), which can efficiently catalyze the intracellular over-expressed H 2 O 2 and dysregulated GSH into oxygen (O 2 ) and oxidized glutathione GSSG, respectively. The generated O 2 is further converted to cytotoxic singlet oxygen ( 1 O 2 ) to kill tumor cells when irradiated under 660 nm near-infrared light, and the synergistic effect of GSH depletion further amplifies intracellular oxidative stress for cancer photodynamic therapy.

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanoscale Multivariate Metal–Organic Frameworks Amplify Oxidative Stress for Efficient Photodynamic Therapy of Cancer

Cao

2023

ACS Appl. Nano Mater.

“…[23][24][25] The metal-organic framework can serve as a template for synthesizing porous metal oxides through self-sacrice. 26,27 The MOF derivatives prepared in this way not only improve the thermal/chemical stability of the original parent MOF but also retain the original fascinating structural characteristics of the parent MOF, such as large surface area, tunable structure, and surface permeability, which better enhance the photocatalytic performance of the material. [28][29][30] Moreover, compared with traditional metal oxides, the porous structure of MOF-derived metal oxides has a larger number of active sites, which enhances their adsorption and catalytic ability.…”

Section: Introductionmentioning

confidence: 99%

Mixed valence copper oxide composites derived from metal–organic frameworks for efficient visible light fuel denitrification

Li,

Huang,

Chen

et al. 2023

RSC Adv.

“…Coordination polymers (CPs) and/or metal–organic frameworks (MOFs), endowed with structural diversity, large porosity, and distinct active sites, hold considerable promise in various fields like catalysis, , gas storage and separation, , photodynamic therapy, and energy storage . Nonetheless, their further usage in practical applications is mainly impeded by their powdered state as well as their weak stability in harsh conditions.…”

mentioning

confidence: 99%

“…Coordination polymers (CPs) and/or metal−organic frameworks (MOFs), endowed with structural diversity, large porosity, and distinct active sites, hold considerable promise in various fields like catalysis, 28,29 gas storage and separation, 30,31 photodynamic therapy, 32 and energy storage. 33 Nonetheless, their further usage in practical applications is mainly impeded by their powdered state as well as their weak stability in harsh conditions. In this regard, wood with hierarchical cellulose channels and mechanical stability offers a robust substrate for efficient loading of CPs/MOFs via physical adsorption, hydrogen bonding, or covalent bonding.…”

mentioning

confidence: 99%

When Coordination Polymers Meet Wood: From Molecular Design toward Sustainable Solar Desalination

et al. 2023

Solar-driven interfacial evaporation harnessing solar energy on a water surface provides a sustainable and economic means to efficiently capture freshwater from nontraditional water sources. Endowed with a hierarchical porous structure and mechanical stability, wood-based evaporators represent a renewable alternative to petroleum-based materials. Nonetheless, incidental inferiorities of a low evaporation rate and weak interfacial strength are challenging to overcome. Herein, we propose the usage of chemically stable coordination polymers (Ni-dithiooxamidato, Ni-DTA) as hydrophilic photothermal nanomaterials for the molecular design of robust wood-based evaporators with improved performance. In situ synthesis of Ni-DTA onto the channel wall of balsawood provides sufficient photothermal domains that localize the converted energy for facilitated interfacial evaporation. A rational control of methanol/dimethylformamide ratios enables the coexistence of 1D-nanofibers and 0D-nanoparticles, endowing Balsa-NiDTA with a high evaporation rate of 2.75 kg m −2 h −1 and an energy efficiency of 82% under one-sun illumination. Experimental and simulation results reveal that Ni-DTA polymers with strong hydration ability decrease the equivalent evaporation enthalpy induced by decreased H-bonding density of water molecules near the evaporation interface. The Balsa-NiDTA evaporator showed a high chemical stability, mainly due to the robust Ni−S/Ni−N bonds and the superior cellulose affinity of Ni-DTA. Furthermore, the Balsa-NiDTA evaporator shows an excellent antibacterial activity and low oil-fouling propensity. This work presents a facile and mild strategy to design chemically stable wood-based evaporators, contributing to highly efficient and sustainable solar desalination under harsh conditions.