INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Yaqian Zhang,Yanhua Liu,Wenxia Bai,Zhuanli Zhang,Jianbin Zhang,Dianming Li,Libang Feng
The selection of simple and effective photocatalysts is a challenge for removing Norfloxacin (NOR) from water. This study successfully synthesized CuO nanoclusters and titanium dioxide (CuO/TiO 2 ) Z-scheme heterojunction using the facile in situ self-growing method and used for photocatalytic degradation of NOR. The 1.4 % CuO/TiO 2 system achieves an 84.88 % NOR degradation efficiency in 60 min and maintains over 78.42 % efficiency after five cycles when exposed to visible light, which is higher than that of CuO and TiO 2 , respectively. The internal electric field established between them expedited the separation and transfer of electron-hole pairs, thereby boosting photocatalytic activity. Moreover, the active species that take part in the photocatalytic reaction were identified as ·O 2 − , ·OH, and h + radicals. According to the mass spectrometry (MS) test, the possible three photocatalytic degradation pathways of NOR were investigated. Finally, the heterojunction formation and charge transfer mechanism of CuO/TiO 2 are proposed and validated with DFT calculation. This study applies simple, low-cost CuO/TiO 2 for efficient NOR degradation under visible light, providing an insight into the scale-up removal of NOR from water.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Jianghui Zhao,Zhi Liu,Siew Chun Low,Zhenzhen Xu,Soon Huat Tan
Developing exquisitely structured light-absorbing materials could be a feasible approach to enhance solar evaporation performance. Herein, a CuO-nanocluster/PVDF-HFP nanofibrous thin-film skeleton/CuO-nanocluster (CPC) architecture membrane was developed via electrospinning, heating, and hydrothermal techniques. The CPC membrane architecture is similar to the triple-layer mesophyll/vein/mesophyll in a natural leaf, whereby mesophyll performs photosynthesis for plant growth and the vein acts as a support skeleton. Similarly, CPC mimicking a leaf structure possesses: (1) upper and lower hydrophilic CuO-nanoclusters to absorb sunlight, promote water supply, and prevent salt crystallization during the evaporation process; and (2) a middle nanofibrous thin-film membrane that acts as a supportive layer. The resulting CPC membrane exhibited an evaporation rate of 1.21 kg m −2 h −1 and 1.06 kg m −2 h −1 for 3.5 wt% saline water and actual industry dye wastewater, respectively. Meanwhile, the CPC membrane was applied in the cycle, continuous, and outdoor evaporation tests. In addition, the CPC membrane displayed impressive mechanical strength and flexibility, making it suitable for the long-term use in practical applications. These findings demonstrate the excellent performance of the CPC membrane for solar water evaporation and should inspire further research on developing dedicated architecture membranes for use in fields such as catalysis, sensing, energy, and other applications.
研究领域:
材料科学
·
能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2022
·Vol. 17
·期 16
·e202200296
·
IF 4.839
Xinyu Jin,Hongxia Zhao,Zhicong Chao,Xiaofeng Wang,Qing Zhang,Huangxian Ju,Ying Liu
Graphical CuO nanoclusters (CuO NC) with a porous structure were synthesized by self-assembly of oleylamine-stabilized CuO NPs (OAm−CuO NPs), and functionalized with folic acid (CuO NC-FA) for specific HeLa cell targeting. Due to the large surface area, CuO NC-FA demonstrated efficient intracellular Fenton-like reaction efficiency with good cell killing capability. Chemodynamic therapy (CDT) based on Fenton and Fenton-like reactions induces cancer cell killing via in situ catalyzing H 2 O 2 and generating highly oxidative hydroxyl radicals (⋅OH) in tumor sites. Their application is not limited by tumor grown depth or hypoxic microenvironment. However, the reaction efficiency is still hampered due to the structure of catalytic agents and the requirement for low pH environment. Here, we design a porous CuO nanocluster (CuO NC) through self-assembly of oleylamine stabilized CuO NPs (OAm−CuO NPs), and functionalize it with folic acid (CuO NC-FA) for specific tumor cell targeting. It can catalyze H 2 O 2 with high efficiency in nearly neutral environment. Besides, the porous structure of CuO NC also helps the diffusion of H 2 O 2 to the interior of nanocluster to further improve Fenton-like reaction efficiency. The convenient synthesis of CuO NC-FA with good Fenton-like reaction efficiency at neutral environment demonstrates good chemodynamic therapy effect.
研究领域:
纳米技术
·
癌症研究
·
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
·
2022
·
IF 10.508
Shixiang Zhou,Li Yao,Hui Mei,Konstantinos G. Dassios,Laifei Cheng,Litong Zhang
Chiral-rotating gas sensing structures composed of chemiresistive-sensitized SiCuOC have been presented to provide a facile method for reducing the thermal expansion of gas sensors working at high temperatures. The structures can disperse thermal stress by heat-induced torsion of their units while maintaining the dimensional stability of the integral construction. Vat photopolymerization constructed Cu-doped SiOC substrates with a high resolution, while Ag-doped CuO nanoclusters further modified them. Taking advantage of the synergistic sensitization effect of the substrate and the surface sensing layer, the structure exhibited a high response/recovery speed (24/32 s) and a response value of 54.45% to 100 ppm acetone; 97.19% of its initial response was maintained after a long-term detection. The thermal expansion coefficient of the sensing structure reached 1.04 × 10–6/K at the working temperature, revealing a near-zero expansion. Compressive strength and Young’s modulus of the structures were 31.93 MPa and 3.38 GPa, respectively. Meanwhile, the structures realized regular gas detection under pressure (85.02 kPa) and thermal (325 °C) loading, as their high deformation resistance protected the integrity and connection of the surface sensing layer. Thus, the work proved the dimensional stabilization effect of chemiresistive sensing structures with chiral-rotating design, realizing stable gas detection in complex loading environments.
研究领域:
材料科学
·
化工
·
传感器技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）