NEW JOURNAL OF CHEMISTRY
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2019
·Vol. 44
·期 1
·79-86
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IF 3.069
Yan Yan,Xu Tang,Changchang Ma,Hai Huang,Kesheng Yu,Yang Liu,Ziyang Lu,Chunxiang Li,Zhi Zhu,Pengwei Huo
In this paper, a two-dimensional (2D) photocatalyst by the BiOCl ultrathin nanosheet modification of biochar (derived from biomass bamboo leaves) was successfully prepared via a facile one-pot hydrothermal process. The synthesized C/BiOCl photocatalysts showed a satisfactory performance on the degradation of tetracycline hydrochloride (TC-HCl). The enhanced photocatalytic activity originating from the introduction of biochar facilitated the rapid transfer of electrons generated from the defect states of the BiOCl ultrathin nanosheets. Moreover, the more the photo-electrons transferred in biochar, the more the quantities of active ˙O2− generated during the photocatalytic reaction, which was confirmed from the free radical capture tests. This work can be extended to the modified routes of BiOCl in the further applications of environmental wastewater treatments.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
BIOMEDICINE & PHARMACOTHERAPY
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2018
·
IF 3.457
Li Zhang,Hui-Xia Li,Wu-Si Pan,Farhan Ullah Khan,Cheng Qian,Feng-Rong Qi-Li,Xiaojun Xu
Background and aims Non-alcoholic steatohepatitis (NASH) is the hepatic manifestation of metabolic syndrome and is characterized by steatosis, inflammation, and fibrosis. We aim to characterize the hepatoprotective effects of Leonurine hydrochloride (LH) and the possible pathway in a cell and rodent model of diet-induced steatohepatitis (NASH). Methods For in vitro studies, Palmitic acid (PA) and free fatty acid (FFA) induced HepG2 and HL7702 steatosis cell models were used. For in vivo studies, NASH was induced by feeding mice MCD diet. These mice received either placebo or LH at three different doses (50、100、200 mg/kg/day) for 6 weeks. Histological staining’s, and commercially available kits for ALT and AST and hepatic contents of TG, TC, MDA, SOD, and GSH were used to assess NASH. Furthermore, relative liver protein and gene expression levels were determined by Western Blot and qPCR, respectively. Results After establishing NASH models, LH treatment improved lipid accumulation, hepatic contents of TG, TC, and expression levels of ALT and AST in dose-dependent manner. Also, LH improved MDA, SOD, and GSH expression levels. The results of RT-PCR and Western blotting showed that LH upregulated the expression of AMPK phosphorylation and downregulated SREBP-1c and its target genes expression level. Conclusions Our data reveal the promising role of Leonurine hydrochloride in the prevention and treatment of NASH, in vitro and in vivo . This effect may be partially mediated by the AMPK/SREBP1 pathway. These findings provide a novel therapeutic target for the clinical treatment of NASH.
研究领域:
药理学
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肝病学
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代谢性疾病
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2019
·
IF 5.155
Fei Liu,Thien-Phap Nguyen,Qin Wang,Florian Massuyeau,Yi Dan,Long Jiang
Constructing a conductive interface is crucial for the transfer of photoexcited charges in the photocatalytic heterojunction system. In this study, we introduced Ag into g-C 3 N 4 /P3HT system to construct a conductive interface which benefits for transfer of photoexcited charges between g-C 3 N 4 and P3HT. A series of characterizations were employed to investigate the chemical structure , morphology and optical property of the obtained catalysts. And the photocatalytic activity of the as-prepared g-C 3 N 4 /Ag/P3HT composites were evaluated by the degradation of tetracycline (TC) and methyl orange (MO) aqueous solution under visible light irradiation. Results show that the g-C 3 N 4 /Ag/P3HT exhibits a broad absorption band in the region of 400–700 nm and the photocatalytic activity of g-C 3 N 4 /Ag/P3HT obtains a great improvement comparing with that of g-C 3 N 4 , g-C 3 N 4 /Ag and g-C 3 N 4 /P3HT. In addition, the optimized loading content of P3HT is 0.3 mass% based on g-C 3 N 4 . The enhanced photocatalytic performance is due to the introduction of Ag, which improves the transfer of photoexcited charges between g-C 3 N 4 and P3HT. The active species trapping experiment shows that the main active specie is O 2− . After five recycling experiments, the g-C 3 N 4 /Ag/P3HT shows high stability in the photocatalytic performance.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
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2021
·
IF 4.641
Summaira Saghir,Zhenggang Xiao
ZIF-8 nanoparticles were prepared through the simple and facile method at room temperature and subsequently applied for the simultaneous adsorption of two antibiotics, tetracycline (TC) and minocycline (MC). The prepared ZIF-8 exhibits regular rhombic dodecahedron having meso and macropores structure with a specific surface area of 1516.06 (m²/g), indicating that ZIF-8 could be an ideal adsorbent material for the adsorption of antibiotics. Moreover, the adsorption conditions were optimized in detail. All the characterizations of ZIF-8 after adsorption reveal the successful adsorption of TC and MC on ZIF-8. The adsorption kinetics and isothermal data of both antibiotics fitted well with the pseudo second order and Langmuir isotherm model. The adsorption behaviour of TC and MC on ZIF-8 was based mainly on electrostatics and π - π stacking interactions. This study revealed that ZIF-8 could be used as a useful adsorbent in treating wastewater contaminated with multiple antibiotics.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2023
·Vol. 33
·期 15
·2210578
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IF 19
Guanghao Li,Suping Ma,Zhuo Li,Yawen Zhang,Yishu Cao,Yi Huang
Fe 3 GeTe 2 provides an ideal system for the study of itinerant ferromagnetism. However, the Curie temperature (Tc) below room temperature limits its further in-depth research and wide applications. Here, the Tc of 224 K for Fe 3 GeTe 2 is greatly increased to 496 K for Fe 3 GeTe 2 /FeTe 2 /Fe 3 Ge by temperature-induced self-decomposition doping, contributing to improve the electromagnetic response for enhancing the absorption strength and bandwidth and boosting application potentials at higher temperatures. Then, to achieve the multispectral compatible strong absorption, room temperature ferromagnetic dielectric graphene@Fe 3 GeTe 2 /FeTe 2 /Fe 3 Ge absorber with 3D porous network structure is prepared by synergistic self-assembly. It has high Tc of 443 K with strong electromagnetic synergistic loss, achieving reflection loss of −61 dB at 12.6 GHz. Moreover, its absorption loss in the terahertz band (0.1–1.6 THz) is 76 dB, and the average loss is greater than 50.4 dB. Furthermore, the absorber is very potential as stealth skin to efficiently reduce satellite RCS with a multi-angle and multi-band manner in the gigahertz and terahertz bands, thus achieving the purpose of stealth. Compared with the reported conventional absorbers, the absorber has a multispectral compatible strong absorption performance covering gigahertz and terahertz bands, thus very promising for electromagnetic protection of electromagnetic communication and space vehicles.
研究领域:
材料科学
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电磁学
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DOI
高影响因子
Advanced Energy and Sustainability Research
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2024
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IF 6.2
Hong Tu,Ying Xu,Shun-shun Chen,Ya Wang,Sheng-xin Guo,Jian Wu
The high catalytic activity of photocatalysts is greatly influenced by the efficient separation of photogenerated charge carriers. In this study, six g-C 3 N 4 -based COFs are designed and synthesized, and CN-203 is identified as the most efficient photocatalyst through experimental screening. Quantitative measurements reveal that singlet oxygen production is ≈100 times that of ·O 2 − and 5000 times that of ·OH. When combined with PMS, CN-203 exhibits degradation rates for RhB and TC that are ≈30 ( k = 0.0293 s −1 ) and 10 ( k = 0.2940 min −1 ) times faster than those of CN550(RhB, k = 0.0531 min −1 ; TC, k = 0.0301 min −1 ), respectively. Structural simulations and calculations show that the modified CN-203 have better electron–hole separation in the excited state, and the energy gap between HOMO and LUMO is significantly reduced after modification. The study also revealed the structure–function relationship between the modification of the same site with different functional groups and its effect on photocatalysis. Overall, this study provides valuable insights into the relationship between surface structure and photocatalytic applications.
研究领域:
材料科学
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化学
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环境科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 10
·4666-4676
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IF 3.925
Wei Ma,Binghua Yao,Qian Yang,Ting Zhang,Kecong Tian,Wen Zhang,Jinfen Niu,Yan Yu,Zheng Chang,Yangqing He
In this study, ultrathin MoSe2 nanosheets (MoSe2 NSs) with enriched selenium vacancies (Se-vacancies) were prepared via a HNO3-assisted exfoliation strategy. The features of the synthesized catalysts were characterized via SEM, TEM, XRD, EPR, Raman spectroscopy, XPS, BET, EIS, PFM and contact angle tests. The results showed that the optimum MoSe2 NSs-10 with an enlarged specific surface area had superior hydrophilicity and conductivity. Meanwhile, MoSe2 NSs-10 showed typical butterfly-shaped amplitude curves and 150° polar domain switching, which confirmed its out-of-plane ferroelectricity. This out-of-plane polarization originated from the unique AB stacking mode of the MoSe2 NSs, contributing to the polarization enhancement. These superior properties of MoSe2 NSs-10 were responsible for its enhanced piezocatalytic degradation efficiency of tetracycline (TC) compared with that of pristine MoSe2 nanoflowers (NFs). Under ultrasonic irradiation, 93.9% TC was degraded by MoSe2 NSs-10 within 30 s, which was over 3.6-fold higher than that by the MoSe2 NFs. Additionally, the active species trapping tests and electron spin resonance (ESR) measurements proved that both hydroxyl radicals (˙OH) and superoxide radicals (˙O2−) participated in the degradation of TC as major active species. The degradation pathways of TC over the MoSe2 NSs-10 piezocatalytic system were proposed based on HPLC-MS analysis. This work provides a new approach for improving the piezocatalytic performance of MoSe2 piezocatalysts towards antibiotic wastewater treatment.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Shihao Miao,Yuanguang Zhang,Hongyu Xia,Hongcheng Gao,Weihao Tao,Zhenzhu Zhang,Chenyu Huang,Lin Huang
In the study, highly N-doped metal organic framework (MOFs) derived CoFeN photocatalysts (CoFeN-N) were successfully prepared by using carbon nitride (g-C 3 N 4 ) nanosheets as the support with simultaneous additional N source. CoFeN-N activated hydrogen peroxide (H 2 O 2 ) was used to remove Methyl orange (MO) and Tetracycline hydrochloride (TC-HCl) in water under simulated visible light . N doping improves the photo-Fenton degradation ability of CoFeN to varying degrees, and the photocatalyst with the best performance is CoFeN-N2. The degradation rate constants (K) of MO and TC-HCl are 1.8 and 5.1 times of CoFeN, respectively. CoFeN-N2 did not significantly inhibit the degradation efficiency of organic pollutants under acidic, neutral and alkaline conditions. Meanwhile, the presence of coexisting anions (Cl − 、HCO 3 - and HPO 4 2- ) in water similarly does not obviously reduce the degradation ability of CoFeN-N2 for MO and TC-HCl, which indicates the excellent anti-interference ability of the prepared photocatalyst. The TOC test results indicate that CoFeN-N2 has excellent mineralization ability for organic contaminants. In addition, hydroxyl radicals , superoxide radicals, and holes (·OH, ·O 2 - and h + ) were demonstrated to be the primary active species for the degradation of organic pollutants by CoFeN-N2 through free radical trapping experiments and EPR tests. This work provides an attractive strategy for the preparation of highly N-doped photocatalysts and the efficient removal of organic pollutants from water by photo-Fenton coupling.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yuwen Chen,Ke Zhu,Wenlei Qin,Zhiwei Jiang,Zhuofeng Hu,Mika Sillanpää,Kai Yan
Spinel oxides are recognized as promising Fenton-like catalysts for the degradation of antibiotics. However, the catalytic performance is restrained by the poor electron transfer rate (ETR). Herein, hollow NiCo 2 O 4 @C nanocages are rationally designed and prepared to accelerate ETR in peroxymonosulfate (PMS) activation for tetracycline (TC) degradation. Enhanced ETR of the NiCo 2 O 4 @C/PMS system is due to three aspects: (1) The hollow nanocage facilitates the diffusion and adsorption of TC, improving the ion transfer at a macroscopic level; (2) Electron reconfiguration in octahedral sites of NiCo 2 O 4 increases the ratio of Co 2+ , resulting in highly efficient PMS activation; (3) In-situ generated carbon acts as “electron shuttles”, improving the electrical conductivity of catalysts at a microscopic level. As a result, the NiCo 2 O 4 @C demonstrates rapid ETR, leading to a high-efficiency activation of PMS. The NiCo 2 O 4 @C/PMS system exhibits exceptional TC degradation efficiency and reusability. Non-radical pathway, including 1 O 2 and direct electron transfer, dominates the system. This work offers a feasible strategy for enhancing electron transfer in the Fenton-like system.
研究领域:
环境科学
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材料科学
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催化
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水处理
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2020
·
IF 10.652
Yilin Wu,Wendong Xing,Faguang Ma,Jia Gao,Xinyu Lin,Jian Lu,Chao Yu,Ming Yan
Three-dimensional (3D) basswood materials were successfully applied to construct molecularly imprinted nanocomposite membranes for the first time. Importantly in this work, the TiO 2 @PDA-based modification layers were initially achieved on basswood surfaces. And 3D mesoporous wood-based molecularly imprinted membranes (3DW-MIMs) with sandwich-like TC-imprinted layers were finally synthesize through a re-modified surface-initiated sol-gel technique. Interestingly, based on the TiO 2 -PDA@basswood surfaces, great increasement of TC-imprinted sites could be prepared during the sol-gel imprinting process. So it was no surprise that excellent rebinding capacity (150.5 mg g −1 ), fast adsorption kinetics and high permselectivity coefficients (more than 9.0) of 3DW-MIMs could be successfully achieved. Furthermore, an important phenomenon had also been found, i.e. the PDA-modified layers caused significant promotions to the rebinding capacities of the as-prepared 3DW-MIMs, that is to say, more and more TC-imprinted sites could be synthesized because of the PDA-modified surfaces. In addition, the as-prepared 3DW-MIMs were synthesized without complicated procedures and polluting the environment. Finally, the experimental results mentioned above, together with the green synthesis processes, strongly demonstrated that our synthesis methodology of 3DW-MIMs had great potential for applications in various fields of selective separation, chemical industry, environment, biological medicine and so on.
研究领域:
材料科学
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环境科学
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化学工程
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生物医学工程
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
·
IF 10.588
Libing Chu,Jianlong Wang,Shijun He,Chuanhong Chen,László Wojnárovits,Erzsébet Takács
In present study, the treatment of real pharmaceutical wastewater from an erythromycin (ERY) production factory by gamma irradiation was investigated. Results showed that a variety of antimicrobial resistance genes (ARGs), involving MLSB, tet , bla , multidrug, sul , MGEs and van genes and plentiful 9 bacterial phyla were identified in the raw wastewater. In addition to ERY, sulfamethoxazole (SMX) and tetracycline (TC) were also identified with the concentration of 3 order of magnitude lower than ERY. Results showed that the abatement of ARGs and antibiotics was much higher than that of antimicrobial activity and COD. With the absorbed dose of 50 kGy, the removal percentage of ARGs, ERY, antimicrobial activity and COD was 96.5–99.8%, 90.0%, 47.8% and 10.3%, respectively. The culturable bacteria were abated fast and completely at 5.0 kGy during gamma irradiation. The genus Pseudomonas was predominant in raw wastewater (56.7%) and its relative abundance decreased after gamma irradiation, to 1.3% at 50 kGy. With addition of peroxymonosulfate (PMS, 50 mM), the antimicrobial activity disappeared completely and ERY removal reached as high as 99.2% at the lower absorbed dose of 25 kGy. Ionizing radiation-coupled technique is a potential option to treat pharmaceutical wastewater for reduction of antibiotics, ARGs and antimicrobial activity.
研究领域:
环境工程
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废水处理
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辐射化学
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微生物学
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DOI
PubMed
高影响因子
Food & Function
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2017
·Vol. 8
·期 9
·3259-3270
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IF 3.247
Xiaozhou Zhou,Shiguo Chen,Xingqian Ye
The anti-obesity effects of different proanthocyanidin extracts (PE) from Chinese bayberry (Myrica rubra Sieb.et Zucc.) leaves were evaluated in a high-fat (HF) diet-induced obese rat model. The leaves of Chinese bayberry (LCB), a non-desaccharified proanthocyanidin extract (NDPE), and a desaccharified proanthocyanidin extract (DPE) were compared with orlistat, a conventional anti-obesity drug used as a positive control. The rats from all of the PE-treated groups showed obvious weight loss, with the greatest weight loss in the DPE group (P < 0.05). Compared to the HF group, almost all of the PE-treated groups showed significantly reduced levels of serum TC, TG, AST, ALT, ALP, LDL-C, ADP and a LEP/ADP ratio, and increased levels of HDL-C and LEP. Furthermore, the expression levels of SIRT1, PPAR-γ, C/EBP-α, BMP4 and UCP1 were investigated in the liver, kidney, epididymis and abdominal adipose tissue. Compared to the HF group, PPAR-γ and C/EBP-α levels were significantly reduced and SIRT1, BMP4 and UCP1 levels were significantly upregulated in the DPE-treated group. Our results suggested that PE exerted its anti-obesity effects by upregulating the expression of SIRT1, thus inducing the deacetylation of PPAR-γ and downregulating the expression of C/EBP-α, and also upregulating the expression of BMP4 to boost the levels of brown fat.
研究领域:
药理学
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营养学
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分子生物学
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生物化学
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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）