JOURNAL OF APPLIED ELECTROCHEMISTRY
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2022
·Vol. 52
·期 11
·1617-1628
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IF 2.925
Chen Jinyang,Huang Xiaozhou,Ye Ruihong,Huang Dihui,Wang Yanjun,Chen Sheng
A series of conductive metal–organic frameworks (M-CATs) were synthesized using 2,3,6,7,10,11-hexahydroxytriphenylas a ligand following a solvothermal method, and the Cu-CAT system exhibiting the best performance was identified. Conductive Cu-CAT-anchored reduction graphene oxide composites (Cu-CAT@rGO) were prepared following a hydrothermal method. The microstructures of the systems were further characterized using X-ray diffraction, scanning electron microscopy, energy dispersion spectroscopy, and transmission electron microscopy techniques. The drip-casting membrane method was used for the fabrication of a novel electrochemical sensor based on the conductive Cu-CAT-anchored rGO (Cu-CAT@rGO/GCE). The electrochemical performance of Cu-CAT@rGO/GCE was studied using electrochemical impedance spectroscopy and cyclic voltammetry techniques. The differential pulse voltamme try technique was used for electrochemical sensing to detect the content of bisphenol A (BPA) in beverage bottles. An excellent linear detection range (0.05–100 µmol L −1 ) and a low detection limit (4.9 nmol L − 1 ; based on S/N = 3) were recorded. Therefore, this method can potentially be used to develop a new route for the detection of BPA. Graphical abstract
研究领域:
材料科学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Yingying Yin,Lei Zhu,Tianchao Guo,Xurong Qiao,Shaopeng Gan,Xiao Chang,Xiaofang Li,Fujun Xia,Qingzhong Xue
The development of efficient oil/water separation membranes is highly significant for reducing severe environmental pollution nowadays. Constructing hierarchical structures with double-scale roughness and inverted trapezoidal geometry is an alternative rational design to fabricate low oil-adhesive membranes. Based on this design concept, a Cu mesh vertically wrapped with novel microphone-like Cu-CAT-1 hierarchical microstructures with double-scale roughness was tactfully prepared by a local concentration effect, which was referred to as CCMOF. The CCMOF possessed superior anti-oil-fouling performance and an outstanding water-absorbing capacity (180.3% larger than that of the pristine Cu mesh) due to its ingenious microphone-like structures and its high affinity for water. Therefore, it could separate various types of oil/water mixtures with a considerably high flux of over 25,000 L m −2 h −1 and an extremely low oil content in filtrate of below 10 ppm. The design concept of this work offered a simple idea to design low oil-adhesive membranes for efficient oil/water separation.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Ningle Hou,Youwei Zhao,Tian Yuan,Ling Li,Xiaoting Li,Wenming Zhang
Flexible multifunctional pressure sensors for human motion monitoring have recently attracted extensive attention. However, the preparation of a multifunctional sensor with wide coverage and high sensitivity to pressure detection remains a considerable challenge. Here, we design a flexible multifunctional pressure sensor consisting of Cu-catechol nanowire coated carbonized nanofiber networks (Cu-CAT@CNFN) sandwiched between two interlocking polydimethylsiloxane doped with ZnS:Cu (ZnS:Cu/PDMS) composite electrode films. Due to the pressure concentration between the interlock micromastoid arrays and the thicker pressure sensitive layer, the pressure sensors demonstrate a high sensitivity of 45.40 kPa −1 , pressure detection coverage of 0 to 110 kPa, a response time of 0.166 s, outstanding cyclic stability of 5,000 cycles and visualization of the pressure. Furthermore, the pressure sensor can be used to detect pulses, wrist and elbow bending, and finger press. The excellent performance of the pressure sensor demonstrates its application potential in the next generation of wearable electronics.
研究领域:
材料科学
·
电子学
·
可穿戴技术
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生物医学工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Zongjie Li,Shuye Wang,Xinhui Wang,Xiaobin Sun,Weimin Kang,Yong Liu
The development of membrane with strong sunlight absorption and high energy efficiency is the key to improve the water production efficiency in photothermal membrane distillation (PMD). In this paper, a hierarchical Cu-based metal–organic framework-functionalized polyvinylidene fluoride (PVDF) tree-like nanofiber membrane (Cu-CAT@TLNM-TLNMs) was developed for high-efficient PMD. The Cu-CAT@TLNM-TLNM was prepared by in-situ growth of Cu-CAT on the surface of PVDF tree-like nanofiber membrane (TLNM) as photothermal layer and PVDF TLNM as support layer, which exhibited excellent photothermal conversion performance, high energy utilization and high permeate flux. The PVDF TLNM with high specific surface area provided more active sites for the growth of Cu-CAT, thus forming a uniform Cu-CAT nanoarray. The spinous structure of the Cu-CAT photothermal layer can increase the length of the light-matter interaction and improve light absorption. In addition, the tree-like structure of the support layer with high porosity and small pore size can improve the permeate flux and long-term stability. Under the illumination of 1 kW·m −2 , the surface temperature of the Cu-CAT@TLNM-TLNMs reached about 80 °C within 50 s, with a permeate flux of 1.37 kg·m −2 ·h −1 , a salt rejection of >99.99 %, and a photothermal conversion efficiency of 76 %. More importantly, the permeate flux of the Cu-CAT@TLNM-TLNMs was still stable at 0.79 kg·m −2 ·h −1 with a salt rejection of >99.99 % after 84 h of continuous operation. This photothermal nanofiber composite membrane can be applied to solve the problem of freshwater shortage in areas where freshwater and fuel resources are scarce and solar energy is abundant.
研究领域:
材料科学
·
环境工程
·
纳米技术
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）