JOURNAL OF CATALYSIS
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2018
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IF 6.759
Yuqing Wang,Li Yan,Cunyao Li,Miao Jiang,Ziang Zhao,Guangjin Hou,Yunjie Ding
Porous organic copolymer (designated as CPOL-BP&P(OPh) 3 ) containing vinyl biphephos moieties and tris(4-vinylphenyl)phosphite (P(OPh) 3 ) moieties was synthesized through a solvothermal copolymerization technique. After metalation with Rh precursor, an efficient heterogeneous catalyst Rh/CPOL-BP&P(OPh) 3 for the hydroformylation of 1-butene is presented with high activity (TOF = 2490.3 h −1 ) and regioselectivity (l:b = 40.0). The Rh/CPOL-BP&P(OPh) 3 catalyst has been investigated by using solid-state 13 C MAS NMR, in situ FT-IR spectroscopy, nitrogen sorption measurements, SEM, TEM, and XPS. Interestingly, in situ FT-IR spectra showed that Rh species tended to coordinate with both two kinds of P species from biphephos and P(OPh) 3 ligands in the Rh/CPOL-BP&P(OPh) 3 polymer frame rather than one kind of them. Therefore, the synergistic effect of three kinds of coordination compound formed between Rh species and both ligands could be responsible for the high activity and regioselectivity observed in hydroformylation of 1-butene.
研究领域:
化学工程
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催化材料科学
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DOI
高影响因子
CHEMOSPHERE
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2022
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IF 8.943
Mengya Li,Lei Li,Yue Sun,Hengyan Ma,Hui Zhang,Feng Li
Multi-pesticides pollution induced by organophosphorus insecticides (OPs) and aryloxyphenoxypropionate herbicides (AOPPs) has become a significant challenge in bioremediation of water pollution due to their prolonged and over application. Though a number of physical, chemical, and biological approaches have been developed for different pesticides, the explorations usually focus on eliminating single pesticide pollution. Herein, a heterostructure nanocomposite OPH/QpeH@mZIF-8, encapsulating OPs hydrolase OPH and AOPPs hydrolase QpeH in the magnetic zeolitic imidazolate frameworks-8 (mZIF-8), was synthesized through a facile one-pot method in aqueous solution. The immobilized OPH and QpeH in mZIF-8 showed high activities towards the two most common OPs and AOPPs, i.e., chlorpyrifos and quizalofop- P -ethyl, which were hydrolyzed to 3,5,6-Trichloro-2-pyridino (TCP) and quizalofop acid, respectively. Moreover, the magnetic nanocatalyst possessed great tolerance towards broad pH range, high temperatures, and different chemical solvents and excellent recyclability . More importantly, compared to free OPH and QpeH, OPH/QpeH@mZIF-8, with significantly enhanced degradation capability, exhibited enormous potential for simultaneous removal of chlorpyrifos and quizalofop-p-ethyl from the surface and industrial wastewater . Overall, the study demonstrates the applicability of this strategy for utilizing magnetic nanocatalysts encapsulating multiple enzymes due to its simplicity, high efficiency, and economic benefits to removing pesticide compound pollution from various water resources.
研究领域:
环境科学
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生物技术
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Jiahang Song,Chuanhui Shi,Yijian Zhou,Shengqian Liang,Enzhou Liu,Chen Wang,Bing Wang,Bo Zhou,Chaoyang Wei,Zhuo Li
Constructing S -scheme heterojunctions serves as a potent approach to boost photocatalytic efficiency by promoting charge transfer and attaining elevated redox potentials. Herein, a novel axially substituted subphthalocyanine derivative, H 12 SubPc-Oph-tBu (SubPc-tBu), was synthesized and assembled onto cobalt-doped ZnS (Co-ZnS) via supramolecular self-assembly to form a unique S -scheme heterojunction (SubPc-tBu/Co-ZnS). In this system, the electron-rich SubPc-tBu unit, in conjunction with the incorporated cobalt (Co), is pivotal in promoting charge transfer and enhancing the photocatalytic efficiency of the heterojunction. The photocatalyst achieved a 97 % degradation efficiency of furantoin (FT) within 30 minutes, with an apparent rate constant that is 17.24 times higher than ZnS and 10.35 times greater than SubPc-tBu, demonstrating its superior photocatalytic performance. Furthermore, after five consecutive cycles, it retained a degradation efficiency of 83.36 %, highlighting its excellent stability and recyclability. Experimental and theoretical studies revealed that the enhanced photocatalytic activity arises from an interfacial charge transfer mechanism improving carrier separation and transfer. Time-dependent density functional theory (TDDFT) and LC-MS coupled with DFT elucidated electron transfer pathways and pollutant degradation mechanisms, offering insights into photocatalyst design for environmental pollution solutions.
研究领域:
材料科学
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环境科学
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光化学
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产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2026
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IF 8.3
Xuan Zhou,Lei Yuan,Zongbao Sun,Wen Zhang
Residual organophosphorus pesticides (OPs) frequently contaminate farm products, such as vegetables, and consequently threaten food safety. Herein, we present an enzyme-regulated dual-emission probe, MIL-53-OPH@S-S-AuNCs, for synchronous OPs hydrolysis and fluorescence determination. The probe, containing NH 2 -MIL-53(Al), organophosphorus hydrolase (OPH), and disulfide-functionalized Au nanoclusters (S-S-AuNCs), thus provides two emissive outputs (F 427 and F 655 ). Specifically, an OPH-assisted hydrolysis route is designed, where OPs are converted into class-informative products, including p-nitrophenol (PNP) and thiol/thiolate species (R-SH/S - ). PNP induces pronounced quenching of the blue emission (F 427 ) via resonance energy transfer, while sulfur-containing products perturb the disulfide-crosslinked state of S-S-AuNCs and attenuate the red emission (F 655 ). Stepwise optimizations are performed to promote efficient catalytic conversion and stable dual-channel readout, where quenching time, pH, and temperature are tuned to achieve pleasurable sensing conditions. This method provides log-linear quantification for OPs in a wide range of 6.5 × 10 −6 ∼20 μg mL −1 , with an impressive limit of detection of 3.4 × 10 −6 μg mL −1 . The proposed method is further validated by natural sample analyses and recovery tests in real vegetables, giving relative errors of 4.2∼8.6% and recoveries of 96.2∼105.2%.
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DOI
高影响因子
Food & Function
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2024
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IF 5.1
Xuening Yu,Guang Li,Shuling Zhou,Xiaoyang Liu,Fawen Yin,Deyang Li,Dayong Zhou
Zinc is essential for maintaining the integrity and repair of small intestinal epithelial cells while zinc deficiency could induce the inflammatory infiltration and imbalance of intestinal flora in the intestine. In this study, glycosylation between oyster protein hydrolysate (OPH) and chitosan oligosaccharide (COS) was conducted and used as the carrier of zinc ions (OCZn). The results of zeta potential and particle size distribution showed that the OPH-COS successfully bound to zinc ions to form OCZn with a surface zinc content of 0.56% (scanning electron microscopy). In addition, OCZn was found to exhibit good intestinal digestion by in vitro simulated digestion microscopy, while TSQ fluorescence staining revealed the presence of free zinc ions released from OCZn in the intestinal cells. In the zinc deficiency-induced mouse model, a moderate dose of OCZn (zinc: 6.96 mg kg−1) showed significant restorative effects on colonic inflammation (IL-1β: 28.20 pg per mg·protein, IL-6: 27.73 pg per mg·protein), protein expressions of HO-1 and ZO-1, oxidative stress (the liver and kidneys), and imbalance of the gut microbiota, increasing microbial diversity and abundance (ratio of Firmicutes/Bacteroides). Zinc deficiency triggered the abundance of Proteobacteria (risk of diseases), while the dominant bacteria were mainly restored to Bacteroides, Parabacteroides, Alistipes, Alloprevotella, and Muribaculaceae following the administration of OCZn. This study provided a theoretical basis for improving the inflammatory infiltration of the colon and the imbalance of intestinal flora caused by zinc deficiency.
研究领域:
营养学
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微生物学
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免疫学
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胃肠病学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2022
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IF 10.383
Hao Zhao,Guanhua Liu,Yunting Liu,Xilin Liu,Hanxi Wang,Huaxun Chen,Jing Gao,Yanjun Jiang
Cascade catalysis that combines chemical catalysis and biocatalysis has received extensive attention in recent years, especially the integration of metal nanoparticles (MNPs) with enzymes. However, the compatibility between MNPs and enzymes, and the stability of the integrated nanocatalyst should be improved to promote the application. Therefore, in this study, we proposed a strategy to space-separately co-immobilize MNPs and enzymes to the pores and surface of a highly stable covalent organic framework (COF), respectively. Typically, Pd NPs that were prepared by in situ reduction with triazinyl as the nucleation site were distributed in COF (Tz-Da), and organophosphorus hydrolase (OPH) was immobilized on the surface of Tz-Da by a covalent method to improve its stability. The obtained integrated nanocatalyst Pd@Tz-Da@OPH showed high catalytic efficiency and reusability in the cascade degradation of organophosphate nerve agents. Furthermore, the versatility of the preparation strategy of COF-based integrated nanocatalyst has been preliminarily expanded: (1) Pd NPs and OPH were immobilized in the triazinyl COF (TTB-DHBD) with different pore sizes for cascade degradation of organophosphate nerve agent and the particle size of MNPs can be regulated. (2) Pt NPs and glucose oxidase were immobilized in COF (Tz-Da) to obtain an integrated nanocatalyst for efficient colorimetric detection of phenol.
研究领域:
催化
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纳米技术
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生物化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
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