POLYHEDRON
·
2024
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IF 2.4
Rong Chen,Yuting Zhu,Na Song,Huixue Fang,Yan Ma,Lengfeng Wu,Shengjun Liu,Kui Zhang
Photosensitizers are highly desirable due to their many applications. Photosensitizers play an important role in photocatalysis. However, conventional photosensitizers are not conducive to recycling. The proximity of the photosensitizing dye to the corresponding carrier is important in dye sensitization and in enhancing photocatalytic performance; however, most photosensitizers exhibit weak interactions with carriers. The transition of the photosensitizer from the molecule to the crystalline state enhances the stability of the photocatalyst and improves photocatalytic performance. In this study, MOF (metal–organic framework) @Zn-TCPP(M) hybrids were synthesized. The H 2 yield of NM@Zn-T(Cu)-3 was 620.56 µmol g −1 (4 h), which was 10.64 times and 3.80 times greater than Zn-TCPP(Cu) and NH 2 -MIL-125, respectively. The results revealed that the modification of the MOF with Zn-TCPP(M) altered the charge-transfer capability, and thus improved photocatalytic activity. This study reports a novel strategy to enhance the photocatalytic performance of Metal-Organic Framework using Zn-TCPP(M).
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Materials Chemistry Frontiers
·
2022
·Vol. 6
·期 15
·2114-2121
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IF 8.683
Xiangnan Wang,Zeyu Feng,Congyang Ye,Haofeng Zang,Yonghua Lu,Hongli Zhang,Gang Zou
Smart materials with programmable shape deformation and synergistic shape/fluorescence variation are highly desired in various practical applications, such as bio-inspired multifunctional robots and machines. However, it is still quite challenging to construct smart surfaces with dynamic fluorescence and morphology from MOFs, which potentially introduce superior performance. Herein, we proposed to utilize Zn-TCPP MOFs and polyurethane to construct a smart hybrid gel, which could exhibit synergistic dynamic fluorescence and reconfigurable patterns upon treating with pure water. Their reversible fluorescence variation as well as the swelling of the surface could be observed even directly by the naked eye. Based on the above results, we designed a dual-response rewriting pattern and flower-like artificial actuator with simultaneous fluorescence variation and shape deformation performance. This study would be of great fundamental value in the rational design of novel smart materials and surfaces.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Fei Guo,Lingfeng Wang,Huixin Dong,Pengyu Yan,Shishuo Wang,Qingquan Li,Shaohua Yin,Guoli Zhou,Ning Zhang,Xiao Wu,Yuandong Jia,Gaohong He,Xiaobin Jiang
High ion-selectivity and robust long-term stability are critical performance metrics for nanofiltration (NF) membranes targeting lithium extraction from high-salinity brines with impurities and high magnesium lithium ratios. Herein, a positive and negative heterostructure dual-layer NF membrane with sub-10 nanometer PA layer on 2D Zn-TCPP nanosheets through interfacial polymerization method coupled with vacuum assisted filtration was constructed. PA layer with positively charge on the top performed as the ‘shield’ that effectively retains Mg2+, while negatively charged Zn-TCPP coupled with uniform pores performed as the ‘accelerator’ to facilitate Li+ permeate. The addition of Zn-TCPP can increase the membrane free volume fraction and construct effective screening channels. An appropriate amount of Zn-TCPP nanosheets can construct PA layers as thin as 5 nm and lead to the best Li/Mg separation performance. (Water permeance of 6.79 L⋅m−2⋅h−1 bar−1 over 360 hours continuous operation when Mg/Li ratio is 50:1, and Li+/Mg2+ separation factor is 80.79). In the ternary metal ions solution tests (Li⁺, Mg²⁺, X⁺, where X = Na⁺ or K⁺ with doubled concentration), Li+/Mg2+ separation factor remains still above 40. The DFT simulations and molecular dynamics reveal The transmembrane energy barrier for Mg²⁺ significantly exceeds that for Li⁺ across the membrane. The adsorption heights of ions on Zn-TCPP in a stable state, the different ion perforation energy and ion diffusion rate furtherly explain the reason for the membrane with excellent separation performance.
研究领域:
材料科学
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膜技术
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分离科学
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能源材料
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环境工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Yawen Xiao,Chen Chen,Yangli Wu,Yutao Yin,Haibo Wu,Hongfeng Li,Yun Fan,Jiansheng Wu,Sheng Li,Xiao Huang,Weina Zhang,Bing Zheng,Fengwei Huo
Controlling the morphology of the metal–organic framework (MOF) for nanosheets is beneficial for understanding their crystal growth kinetics and useful for extending these MOF nanosheets to advanced applications, in particular for gas separation and device integration. However, synthesizing MOF nanosheets with uniform thickness or desirable size still remains challenging. Herein, we provide a crystal dissolution–growth strategy for fabricating dispersible porphyrin MOF nanosheets with lateral dimensions and nanometer thickness. A morphological transition (bulk crystals–nanosheets–bulk crystals) in Zn-TCPP was observed when controlling the crystal growth kinetics by adjusting the reaction parameters (temperature and acidity). These findings encouraged the synthesis of other types of nanosheets (Cu-TCPP, Zn-TCPP (Pd), and Cu-BDC nanosheets). Zn-TCPP (Pd) nanosheets were applied in field-effect transistors and exhibited photoresponse characteristics. This work demonstrates a new strategy for obtaining MOF nanosheets and casts a new light upon fabricating two-dimensional inorganic–organic hybrid materials with controlled thickness.
研究领域:
材料科学
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化学
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纳米技术
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Xueqin Li,Jinpeng Hou,Ruili Guo,Zhongming Wang,Jianshu Zhang
Ultrathin microporous nanosheets denoted as Zn-tetra-(4-carboxyphenyl)porphyrin (Zn-TCPP) were synthesized and incorporated into a Pebax MH 1657 (Pebax) polymer to fabricate mixed matrix membranes (MMMs) for efficient CO2 separation. The Zn-TCPP nanosheets with a microporous structure provide high-speed channels for fast CO2 transport and shorten the diffusion pathways, both contributing toward high CO2 permeability. Furthermore, scanning electron microscopy results indicate that the ultrathin Zn-TCPP nanosheets with an ultrahigh aspect ratio (>200) tend to arrange horizontally in the Pebax matrix. The obtained unique cross-sectional structure of the MMMs functions as a selective barrier, allowing repeated discrimination of gases due to the tortuous interlayer of horizontal nanosheets, thus improving the selectivity of the MMMs. In addition, the horizontally arranged microporous nanosheets were found to strongly interact with the membrane matrix and endowed the MMMs with excellent interfacial compatibility, which improved the CO2 permeability and eliminated unselective permeation pathways. Significantly, the optimized CO2 separation performance of the MMMs surpassed the 2008 Robeson’s limit.
研究领域:
材料科学
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环境工程
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DOI
PubMed
高影响因子
Nano Research
·
2020
·Vol. 14
·期 3
·660-666
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IF 8.183
Hang Lifeng,Zhang Tao,Wen Hua,Liang Lianbao,Li Wuming,Ma Xiaofen,Jiang Guihua
Photodynamic therapy (PDT) is a widely-used technology for cancer therapy, but conventional photosensitizers still face some drawbacks, such as hydrophobicity, inadequate pharmacokinetics, low cell/tissue specificity, and uncontrollable photodynamic performance during the therapeutic process. Herein, we present a controllable photodynamic performance based on two-dimensional metal-organic frameworks (2D Zn-TCPP MOF) that displayed a week PDT effect under a neutral environment upon exposure to a 660 nm laser due to the degeneracy of Q bands of TCPP. However, the 2D Zn-TCPP MOF showed a significantly enhanced PDT effect in an acidic environment under irradiation with a 660 nm laser due to the released TCPP from decomposed MOF structure. From the in vitro outcomes, the 2D Zn-TCPP MOF showed controllable photodynamic performance from neutral to acidic environments. Due to the acidic tumor microenvironment, the 2D Zn-TCPP MOF presented the strongest antitumor effect in vivo under irradiation with a 660 nm laser. This work offers a promising strategy to develop a next-generation photosensitizer.
研究领域:
生物医学工程
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癌症治疗研究
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材料科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Lu Tao,Xiaojuan Wang,Fadong Wu,Binghui Wang,Congjie Gao,Xueli Gao
Monovalent cation permselective membranes (MCPMs) manifest remarkable effectiveness and potential in lithium extraction whereas facing the challenge to achieve high permselectivity and high Li + permeability simultaneously. In this work, Zn-TCPP, a kind of two-dimensional nanosheet with abundant negative charges, was successfully synthesized via surfactant-assisted method and introduced into surface cross-linked SPES membrane to fabricate MCPMs. The physicochemical properties, electrochemical properties and Li + /Mg 2+ separation performance of resulted MCPMs were systematically estimated. As ions passing through the membrane, dense PVA/GA crosslinked layer separated Li + and Mg 2+ by pore-size sieving effect. Afterwards, uniformly distributed Zn-TCPP nanosheets with rich negative charges and physically adsorbed water molecules elevated the charge density and water content in the membrane and thus expedited Li + transporting. Therefore, high Li + /Mg 2+ permselectivity ( P Mg 2 + Li + = 8.99) and Li + permeation flux ( J Li + = 9.12 × 10 −9 mol cm −2 ∙s −1 ) were obtained. Furthermore, membrane surface resistance was reduced from 108.99 Ω cm 2 to 24.12 Ω∙cm 2 . This study points out the feasibility of the new method for accelerating monovalent ion transport and alleviating the restriction between ion permeation and permselectivity in selective ion exchange membranes.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2026
·Vol. 9
·期 4
·340
·
IF 15.5
Wang Yanrong,Chen Qiuling
The strategic integration of metal-organic frameworks (MOFs) with MXenes presents a promising avenue to overcome charge separation bottlenecks in photocatalysis. This study constructs a hierarchical S-scheme heterojunction by in-situ growing ultrafine Zinc–Tetrakis(4-carboxyphenyl) porphyrin (Cobalt-incorporated) Zn-TCPP(Co) MOF nanoparticles (15 nm) on two-dimensional functionalized MXene nanosheets. This unique “particle-on-lamella” architecture is engineered with molecular bridges, establishing a chemically bonded interface via C–Ti–O and N–Ti bonds that facilitate rapid charge transfer. The optimized heterostructure exhibits a narrow bandgap of 1.95 eV, a significantly prolonged charge carrier lifetime of 35.5 ns, and a high photocurrent density of 1.7 µA cm − 2 . By leveraging synergistic S-scheme charge separation, MXene’s metallic conductivity, and molecular single-atom Co sites, the composite achieves an exceptional hydrogen evolution rate of 24.3 mmol g − 1 h − 1 with an apparent quantum efficiency of 10.2% at 420 nm—representing a sixfold enhancement over pristine Zn-TCPP(Co). This performance surpasses many recently reported MOF- and MXene-based photocatalysts. Combined density functional theory calculations and experimental analyses confirm the critical role of the internal electric field in driving the S-scheme mechanism, which effectively preserves strong redox potentials. This work provides a definitive blueprint for high-performance photocatalytic systems through molecular-level interfacial engineering.
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DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2026
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IF 11.8
Kai Liu,Yuanyuan Ren,Jun Wang,Xue Zhang,Jiaxing Sun,Huitong Xu,Kewei Zhang,Song Yang
Ammonia (NH 3 ) in exhaled breath is a promising biomarker for non-invasive monitoring of metabolic disorders, but achieving selective and sensitive detection under complex breath environments remains challenging. Here, we report a bioinspired g-C 3 N 5 @Zn-TCPP heterojunction formed through π-π stacking that enables molecular-recognition-driven breath NH 3 sensing. Inspired by the synergistic functions of ammonium transporter (AmtB) and ammonia monooxygenase (AMO), this heterostructure integrates pore-confined molecular enrichment with interfacial electric-field regulation. The intrinsic aperture of Zn-TCPP (∼2.8 Å), closely matching the kinetic diameter of NH 3 (2.6 Å), enables size-selective molecular sieving, while the g-C 3 N 5 -induced interfacial electric field modulates the electronic environment of Zn 2+ active sites and strengthens Lewis acid-base interactions with NH 3 molecules. Benefiting from this synergistic molecular recognition mechanism, the optimized 0.08@g-;C 3 N 5 @Zn-TCPP sensor achieves a remarkable response (R 0 /R g = 223 toward 5 ppm NH 3 ), a low detection limit of 232 ppb, and excellent durability over 1000 bending cycles at room temperature. Machine-learning-assisted analysis further enables accurate discrimination of NH 3 from interfering gases (R 2 = 0.91). The sensor also distinguishes breath NH 3 variations between healthy individuals and disease-related samples, highlighting its potential for intelligent non-invasive breath analysis. This work establishes a bioinspired molecular recognition strategy by coupling pore confinement with interfacial electric-field regulation, providing a new paradigm for selective gas sensing and wearable health-monitoring platforms.
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DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Yu Wang,Yu Xue,Qilin Zhao,Shuang Wang,Jian Sun,Xiurong Yang
Alzheimer’s disease (AD) is a common chronic neurodegenerative disease that manifests as cognitive impairment and behavioral deficits and severely threatens the health of the elderly. Acetylcholinesterase (AChE) plays a vital role in biological signaling and is an essential target for the early diagnosis and treatment of AD. Herein, 2D Zn-TCPP(Fe) nanosheets (NSs) employing Zn2+ and Fe-bound tetrakis(4-carboxyphenyl)porphyrin ligands were prepared through a surfactant-assisted synthetic method. The ultrathin two-dimensional (2D) metal–organic framework structures exhibited high peroxidase-like activity, which allowed the catalysis of the H2O2-initiated oxidation of colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxidized TMB (ox-TMB). Such catalytic performance inspired us to develop a convenient, rapid, and sensitive acetylcholinesterase activity assay, during which AChE can catalyze the substrate acetylthiocholine (ATCh) to produce thiocholine (TCh), and TCh could especially enable the degradation of 2D Zn-TCPP(Fe) NSs accompanied by the reduction of ox-TMB production. Our proposed sensing system exhibited favorable selectivity and sensitivity (LOD of 0.029 mU/mL) and has excellent potential to evaluate AChE activity in human serum samples and to screen AChE inhibitors. This colorimetric assay could provide an alternative pathway for early diagnosis and drug screening of AD, facilitating the development of AD therapy.
研究领域:
神经退行性疾病
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生物化学
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纳米技术
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诊断方法
·
药物筛选
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）