NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Shufeng Lin,Zhonghua Sun,Zhenzhen Wang,Qiumin Zhou,Anwei Wang,zhong wu,Junfeng Qian,Ming-Yang He,Qun Chen
Bisphenol A (BPA) is ubiquitous in industrial production and daily life. However, BPA is harmful to the health of fetuses and children due to its potential endocrine-disrupting effects. Hydrogenated bisphenol A (HBPA), an alicyclic diol generated from hydrogenating the double bonds of two benzene rings in the BPA molecule, is supposed to be a perfect substitute for BPA due to its stability and non-toxicity. Nevertheless, the rational design of high-performance catalysts for selectively converting BPA into HBPA remains a significant challenge. In this work, highly dispersed Ru immobilized by Al2O3 modified with Ni promoter (Ru/Ni-Al2O3) have been constructed, enabling BPA selective hydrogenation to produce HBPA under mild conditions. The doping of Ni promoter around Ru active sites effectively regulated the selectivity of target reaction. Both characterization and experimental results validated that the Ni promoter manipulated the electronic state of Ru through strong electron interaction between Ni and Ru, and thus the catalytic performance. In addition, the catalytic performance was also dependent on other reaction parameters such as H2 pressure, reaction temperature, liquid hourly space velocity (LHSV), and hydrogen-oil volume ratio. The optimized Ru/0.1Ni-Al2O3 catalyst achieved a BPA conversion of 100% and an HBPA selectivity of 96.4% under optimal reaction conditions (6 MPa H2, 140 oC, 0.42 h-1 LHSV, and 1500:1 hydrogen-oil volume ratio).
研究领域:
催化化学
·
环境科学
·
材料科学
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产品关联
DOI
高影响因子
MACROMOLECULAR RESEARCH
·
2018
·Vol. 26
·期 6
·529-538
·
IF 1.767
Wei Jingjing,Ma Songqi,Yue Hong,Wang Sheng,Zhu Jin
Hydrogenated bisphenol A epoxy resin was cured using different kind of curing agents, resulting in epoxy networks with better shape memory properties than bisphenol A epoxy networks. The non-isothermal curing kinetics investigated by differential scanning calorimetry (DSC) demonstrated that hydrogenated bisphenol A epoxy showed lower curing reactivity than bisphenol A epoxy, while it still could be cured well. The thermal and mechanical properties as well as shape memory properties were studied by dynamic mechanical analysis (DMA), DSC, thermogravimetric analysis (TGA), three-point bending test and U-type shape memory test and cyclic stretch test using DMA. Results manifested that hydrogenated bisphenol A epoxy systems exhibited lower shape transition temperature (lower T
g
), slightly higher modulus, better toughness, much faster shape recovery rate, and better elongating ability at temperature above T
g
than bisphenol A epoxy systems, which was due to the rigidity of cyclohexane ring from its steric hindrance and favorable segmental mobility when absorbing external energy such as heating or bending. Moreover, the shape fixity and shape recovery ratio of all the samples were as high as 96.3~98.5% and 100% and their cycling stability during shape memory test was excellent. Although lower than bisphenol A epoxy networks, hydrogenated bisphenol A epoxy networks possessed high thermal stability with initial degradation temperature ( T d 5% ) of >305 °C.
研究领域:
材料科学
·
高分子化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Gaoming Li,Yeping Wu,Zhongtao Chen,Mao Chen,Peishuang Xiao,Xiaoting Li,Huan Zhang,Ping Zhang,Chunyan Cui,Wenguang Liu,Xiuli Zhao,Yinyu Zhang
Biomimetic adhesives inspired by mussels are promising bonding materials in both dry and wet conditions. However, few such materials are suitable for application as underwater construction adhesives, where much higher bonding performance (≥5 MPa) and scale production are urgently required. Herein, a biomimetic catechol-based Mannich base epoxy curing agent (CMB) was prepared by the one-pot condensation reaction of 4- tert -butylcatechol, paraformaldehyde, and diethylene triamine on a hectogram scale. Further, a fast-curing two-part epoxy adhesive was designed by combining the CMB with the diglycidyl ether of hydrogenated bisphenol A. Benefiting from the independent crosslink-point strategy and synergic conditions, the CMB epoxy adhesive could maintain its dry bonding strength (9.0 MPa), even in a 4 °C underwater environment, which is the highest value that has been achieved to the best of our knowledge. Moreover, with a moderate post-curing process, the dry bonding strength on sandblasted Al (20.4 MPa) matches that were obtained on anodized Al and siloxane-treated Al, on which the obtained bonding strength represents the upper limit of an adhesive because of their well-known optimal surfaces for bonding. To the best of our knowledge, no previously reported catechol-assisted adhesive could achieve the same strength as siloxane-treated surfaces. Accelerated ageing experiments showed that the catechol groups had good endurance under hydrothermal conditions. The developed CMB epoxy adhesive has great potential as a high-performance structural adhesive and the findings of this study contribute to the understanding of the important chemical properties necessary for the design of biomimetic adhesives.
研究领域:
材料科学
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化学工程
·
胶粘技术
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DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Hongji Wang,Jian Wang,Hanyu Yao,Xiaoqing Hao,Yin Lv,Zhong Wei
The environmental pollution caused by traditional plastics and the shortage of petroleum resources have increasingly garnered attention. The non-renewable nature of traditional petroleum-based materials has prompted an increasing number of researchers to focus on developing biodegradable bio-based materials. Polybutylene succinate (PBS) has garnered significant attention due to its excellent properties and low price. However, the poor toughness of PBS limits its applications. In this paper, an environmentally friendly rigid cyclic structure, hydrogenated bisphenol A (HBPA), is introduced into the synthesis of poly(butylene succinate) (PBS), forming the PBHBPAS copolymer. The addition of HBPA reduces the crystallinity of PBS, thereby increasing the elongation at break and improving toughness. It also significantly enhances the glass transition temperature (T g ), mechanical properties, and optical transparency of the copolymer, greatly expanding the application fields of PBS. Due to HBPA's relatively regular and long-chain rigid structure, the synthesized copolymer can significantly increase its elongation at break without reducing tensile strength. Specifically, the synthesized PBHBPAS5 exhibits a tensile strength of 43 MPa and an elongation at break of 557 %. Its toughness and tensile strength are both improved compared to PBS, significantly enhancing its mechanical properties. In addition, the optical transparency test results indicate that the optical transparency of PBHBPAS20 is approximately 16 times that of PBS. The water degradation test reveals that copolyesters with varying proportions of HBPA exhibit polyesters with different degradation rates, which are slower than that of PBS, thereby broadening the application fields of PBS in transparent packaging and degradable mulching films.
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产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2025
·
IF 8
Yang Wan,Jia Li,Xi Wu,Pan Wu,Lin Zhang
Bisphenol A (BPA), a well-recognized endocrine-disrupting chemical, is a significant environmental contaminant linked to various health disorders. Therefore, the development of rapid and sensitive BPA detection methods is essential for accurate monitoring in complex matrices. In this study, an electrochemical biosensor was constructed that synergistically combines the catalytic activity of laccase with the conductive properties of multi-walled carbon nanotubes (MWCNTs). Laccase was effectively immobilized within a Co 3 (PO 4 ) 2 -based hybrid nanoflower through biomimetic mineralization, forming a spatially confined catalytic system. Structural characterization of the nanoflowers revealed their spherical morphology with hierarchical porosity and an average diameter of 6 μm. The laccase@Co 3 (PO 4 ) 2 /MWCNTs nanocomposite-modified glassy carbon electrode demonstrated good catalytic performance for BPA oxidation, exhibiting high sensitivity (3.592 μA·μmol −1 L) and a low detection limit of 0.015 μM (S/N = 3)). Practical applications in analyzing commercial bottled water and plastic infant bottles confirmed the biosensor's reliability. This research presents an efficient and cost-effective approach for BPA risk assessment, contributing to the protection of public health.
研究领域:
环境科学
·
分析化学
·
纳米技术
·
电化学
·
生物传感器
·
毒理学
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Yiyun Zhang,Wenwen Zhang,Liming Zhang,Guangsan Song,Ningwei Wang,Wanzhen Xu,Weihong Huang
An imprinted electrochemical sensor based on multifunctional multi-walled carbon nanotubes was synthesized for detection of bisphenol A (BPA). Molecularly imprinted polymers (MIPs) consist carboxylated quantum dots grafted with aminated multi-walled carbon nanotubes as a carrier, BPA as a template, and 3-aminopropyltriethoxysilane (APTES) as a monomer. The successful recombination of quantum dots allows the electrodes to translate small differences in concentration into large changes in current response. Modified materials were discussed by TEM, SEM, FT-IR, Fluorescence, XRD, together with a series of characterization of electrochemical behavior. The MIPs displayed well selectivity towards BPA and hardly showed response to interferes. Also, the sensor has a high stability (RSD of 5.17%) and repeatability (RSD of 0.43%). Moreover, the current response has a linear relationship range from 0.05 to 50 nmol L −1 , with a detection limit of 0.015 nmol L −1 . Finally, the modified electrode was utilized for the detection of 3 kinds of water samples which indicated that the sensor has potential for future applications in trace detection of BPA in environment water.
研究领域:
环境科学
·
材料科学
·
分析化学
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产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2020
·
IF 7.094
Xiaogang Guo,Cheng-Hsin Lu,Huisheng Huang,Xun Cui,Taotao Liang,Binfang Yuan,Jing Wang,Xueming Li
This study firstly proposed the fabrication and characterization of novel multifunctional aluminum/nickel/perfluorosilane composites with stable thermal energy release capability and anti-wetting properties via a controllable electrophoretic assembly deposition (EAD) method through co-assembly of aluminum and nickel nanoparticles and further surface functionalization with natural drying. Products exhibited promising reticulate-like microstructures with uniform distribution and high degree of crystallinity . The controllable fabrication of composites can be realized conveniently by deeply analyzing the assembly dynamics of EAD process of different nanoparticles in an optimal suspension ( V isopropyl alcohol :V polyethyleneimine :V perhydrobisphenol A = 50:1:1.5 ). The differential scanning calorimetry (DSC) results demonstrated a violent energy release ( Q = 3.12 × 10 5 J/kg ) of composite that confirmed by the ignition tests, and the corresponding output of heat ( Q ) kept stable with low fluctuation degrees ( F d = ~2% ) in different real environments. Moreover, products turned out to possess outstanding anti-wetting properties for various droplets with different surface tensions under changeable environments (e.g. hydrogen, oxygen, humidity, etc.) after extra-long (2 years) exposure experiments, and their contact angle still exceeded 150° even for hexadecane with a low surface tension of 27.5 mN/m. Over all, the feasibility of the concept for designing multifunctional aluminum/nickel/perfluorosilane composites demonstrated in this study has great potentials to be generally applied to facilitate the efficient design of a myriad of metal(s)@polymers composites with wide applications.
研究领域:
材料科学
·
化学工程
·
表面化学
·
热能工程
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Xiaoling Lei,Ziyi Deng,Yanbo Zeng,Shisi Huang,Yiwen Yang,Hailong Wang,Longhua Guo,Lei Li
A novel composite of conductive metal organic framework and molecularly imprinted poly (ionic liquid) (CMOF-MIPIL) was prepared for highly sensitive detection of bisphenol A (BPA). Ni-based CMOFs with various organic ligands, i.e., 2,3,6,7,10,11-hexaiminotriphenylene, hexa-aminobenzene, and 2,3,6,7,10,11-hexahydroxytriphenylene were synthesized. The electrochemical properties of the obtained Ni-based CMOFs were investigated. The results demonstrated that Ni 3 (HITP) 2 had the highest conductivity and largest effective surface area. CMOF-MIPIL was then prepared with Ni 3 (HITP) 2 as supporter, BPA as template, and ILs as monomer and cross-linker. Under optimal conditions, CMOF-MIPIL sensor exhibited a linear range of BPA detection from 0.005 to 5.0 μM. The detection limit was 4.0 nM. Compared with MIPIL, Ni 3 (HITP) 2 , and CMOF-NIPIL-based sensors, the performance of this sensor for BPA detection was superior due to the excellent conductivity and the presence of specific recognition sites. In addition, CMOF-MIPIL sensor had excellent selectivity for BPA. The proposed assay was used for detection of BPA in environmental water samples, plastic bottle and fresh liquid milk samples with success.
研究领域:
分析化学
·
环境科学
·
材料科学
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产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2023
·
IF 8.3
Jian Zhang,Yanbo Zeng,Lifen Chen,Xiaoling Lei,Yiwen Yang,Zhidong Chen,Longhua Guo,Lei Li
A novel core-shell composite of PCN-222 and molecularly imprinted poly (ionic liquid) (PCN-222@MIPIL) with high conductivity and selectivity was prepared for electrochemical sensing 4-nonylphenol (4-NP). The electrical conductivities of some MOFs including PCN-222, ZIF-8, NH 2 -UIO-66, ZIF-67, and HKUST-1 were explored. The results indicated that PCN-222 had the highest conductivity and was then used as a novel imprinted support. PCN-222@MIPIL with core-shell and porous structure was synthesized using PCN-222 as support and 4-NP as template. The average pore volume of PCN-222@MIPIL was 0.085 m 3 g -1 . In addition, the average pore width of PCN-222@MIPIL was from 1.1 to 2.7 nm. The electrochemical response for PCN-222@MIPIL sensor for 4-NP was 2.54, 2.14, and 4.24 times that of non-molecularly imprinted poly (ionic liquid) (PCN-222@NIPIL), PCN-222, and MIPIL sensors, respectively, which result from superior conductivity and imprinted recognition sites of PCN-222@MIPIL. The current response of PCN-222@MIPIL sensor to 4-NP concentration from 1 × 10 −4 to 10 μM presented an excellent linear relationship. The detection limit of 4-NP was 0.03 nM. The synergistic effect between the PCN-222 supporter with high conductivity, specific surface area and shell layer of surface MIPIL results in the outstanding performance of PCN-222@MIPIL. PCN-222@MIPIL sensor was adopted for detecting 4-NP in real samples and presented to be a reliable approach for determining 4-NP.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 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）