ELECTROCHIMICA ACTA
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2018
·
IF 5.116
Kané Rabé,Lifen Liu,Noor Ahmed Nahyoon,Yizhen Zhang,Ahmed Mahmoud Idris
Degradation of pollutants can be integrated with electricity generation in Photocatalytic fuel cell under light irradiation or self-powered fuel cell in the dark. In fuel cell driven by electrode reactions , the electrode reduction and oxidation transforms chemical energy in pollutants into electrical energy. In this work, Rhodamine B and coking wastewater were treated, using an efficient Z-scheme g-C 3 N 4 /Fe 0 (1%)/TiO 2 as an anodic catalyst and WO 3 as a cathodic catalyst. After 100 min of reaction in a single chamber fuel cell with 10 Ω of external resistance, in 0.05 M Na 2 SO 4 electrolyte, the paired stainless-steel electrodes loaded respectively with g-C 3 N 4 /Fe 0 (1%)/TiO 2 and WO 3 , degraded 98% Rhodamine B and generated 0.95 V cell voltage under 50 W visible-light irradiation, while removed 60% RhB and generated 0.5 V without light. To investigate the PFC performance of g-C 3 N 4 /Fe 0 (1%)/TiO 2 in treating real coking wastewater, at optimal pH 2, 91% chemical oxygen demand (COD) and 89% total organic carbon (TOC) were removed and generated 0.3 V cell voltage. The influence of pH on photocatalytic degradation performance and cell voltage are evaluated. The high cell voltage is attributed to the very low impedance of the g-C 3 N 4 /Fe 0 (1%)/TiO 2 loaded anode. The excellent electrochemical properties of paired electrodes help in generating higher current density , due to the increased photocatalyst activity of the tridimensional catalyst as proved by electron spinning resonance spectrum, photoluminescence , and Electric Impedance Spectrum analysis.
研究领域:
环境科学
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光催化
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能量转换
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废水处理
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电化学
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材料科学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Chao Lin,Pengju Pan,Guorong Shan,Miao Du
Water-in-oil-in-water (W/O/W) Pickering double emulsions are promising materials for the construction of carriers for water-soluble and oil-soluble molecules or drug delivery systems if the contradictive trade-off between their extreme stability and controlled release properties can be resolved. In this study, biodegradable and biocompatible poly(ethylene glycol)-b-poly(ε-caprolactone-co-δ-valerolactone) (PEG-b-PCVL) diblock copolymers with predesigned hydrophilic to hydrophobic block length ratios and nearly identical ε-caprolactone/δ-valerolactone molar ratio (8/2), were synthesized by ring-opening copolymerization. Then, they self-assembled to create semicrystalline micelles. The melting points of PEG-b-PCVL copolymers and their lyophilized micelles were within a physiological range of temperatures, as determined by differential scanning calorimetry. Water contact angle measurements provided evidence that the surface wettability of PEG-b-PCVL micelles could be tuned by the PCVL block mass fractions or temperature stimulus. Such PEG-b-PCVL micelles were employed as a single particulate stabilizer to develop Pickering double emulsions through a one-step emulsification technique. W/O/W Pickering double emulsions could be generated using relatively hydrophobic PEG-b-PCVL micelles with high mass fractions (exceeding about 89%) of PCVL blocks, and they displayed excellent long-term physical stabilities at room temperature. However, the Pickering double emulsions underwent a rapid microstructural transition into simple oil-in-water Pickering emulsions instead of complete demulsification at elevated temperature (37 °C), which was attributed to the hydrophilicity of micelles enhanced when the core-forming PCVL melted realized by temperature stimulus. Consequently, such W/O/W Pickering double emulsions stabilized solely with semicrystalline PEG-b-PCVL micelles exhibit thermal responsiveness, enabling them to release vitamin B12 encapsulated within the internal aqueous phase rapidly.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Meng-Zhu Qin,Yanyan Bian,Huai-Yuan Niu,Wen-Xin Fu,Xue-Gang Zhang,Qi-Yao Hu,Duan Guo,Cheng-Gang Niu,Lei Zhang
The determination of non-radical pathways and identification of the main active site in the persulfate (PS) activation by B-doped carbonaceous materials are still controversial. Therefore, sodium citrate was selected as the carbon source and self-template for synthesizing a B-doped carbonaceous materials to activate peroxydisulfate (PDS) in this work. Multiple characterizations and experiments revealed that the electron transfer regime was responsible for the activation of PDS. On the one hand, the metastable surface complexes were generated due to the adsorption of PDS onto the catalyst surface via inner-sphere interaction. On the other hand, the interaction between BPA and the catalyst was verified as charge-assisted hydrogen bonding. In addition, BC 3 was identified as the main active site. Based on the detailed and in-depth exploration of the electron transfer regime during the PDS activation of B-doped carbonaceous materials, this work further elucidated interactions, and the vital role of BC 3 in PDS activation.
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高影响因子
Catalysis Science & Technology
·
2018
·Vol. 9
·期 3
·659-671
·
IF 5.365
Yanliang Zhai,Shaolong Zhang,Yunshan Shang,Yu Song,Wenxuan Wang,Tong Ma,Luoming Zhang,Yanjun Gong,Jun Xu,Feng Deng
Herein, a specific core–shell MFI zeolite was designed for the methanol to propylene (MTP) reaction. The core–shell structure of Al-ZSM-5@B-ZSM-5 and Al-ZSM-5@silicalite-1 were easily obtained via a two-step procedure, in which Al-ZSM-5 aggregate acted as the core and B-ZSM-5 or silicalite-1 as the shell. Their core–shell structures, acidity distribution and pore properties were characterized systemically, and new insights were gained into the synergetic effect of acid property and diffusion on the MTP reaction. The Al-ZSM-5@B-ZSM-5 zeolite exhibited a superior catalytic performance with a lifetime of 350 h (WHSV = 3 h−1), propylene selectivity of 49% and high turnover number of 4.3 × 106, while for the Al-ZSM-5 core, the corresponding values were 210 h, 43% and 5.2 × 105, respectively. Al-ZSM-5@silicalite-1 displayed the second best performance with the values of 250 h, 45% and 2.9 × 106, respectively. Gradient strong acid reduction from the core to the shell via the epitaxial growth of the silicalite-1 or B-ZSM-5 shell combined with an appropriate strong/weak acid ratio plays a vital role in inhibiting the hydrogen transfer reaction and thus gives a low consumption of propylene and low coke deposition. For the hydrogen transfer reaction of alkenes to form alkanes and aromatics, strong acid sites are required. Moreover, the acid sites originally existing on the external surface of the Al-ZSM-5 core were converted into internal acid sites due to the formation of an interface zone in the core–shell zeolite, possessing micropore characteristics, which in turn improve the shape selectivity and suppress coke deposition. Especially, the Al-ZSM-5@B-ZSM-5 zeolite displayed more weak acid sites and few strong acid sites on its shell surface, which are beneficial for the low formation of external coke and also account for the highest utilization of acid sites in the MTP reaction, high propylene selectivity and long lifetime.
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DOI
高影响因子
Asian Journal of Pharmaceutical Sciences
·
2024
·
IF 10.7
Hechen Wang,Xudan Shen,Xinlan Zhu,Su Zeng,Sheng Cai
Hepatocellular carcinoma (HCC) shows the highest morbidity among liver cancers and accounts for a major factor inducing cancer-associated mortality globally. It is characterized by genetic mutations in hepatocytes, leading to uncontrolled cell growth and proliferation. Treatment options for HCC include surgery, chemotherapy, and immunotherapy. But chemotherapeutics, which focus on single-targeted drug therapy, are still associated with certain limitations and may affect the treatment outcomes. Compared with chemotherapy drugs, natural products also show the anticancer effect of HCC and hypotoxicity, but overall low activity of natural products limits their further application. MiRNAs can modulate post-transcriptional functions of target genes. An increasing body of evidence has demonstrated that miRNAs are the key regulators in HCC by targeting different molecules in different signaling pathways. However, miRNAs are fragile and liable to catabolism by RNases in serum and other body fluids and small molecules separated from natural products may have limited bio-availability. According to this background, a chitosan based, targeted sustained-release nanoparticle delivery miR-128-3p agomir (NA-miR-128-3p) was developed in this work. This nanoparticle was prepared by pentasodium tripolyphosphate (TPP), chitosan hydrochloride, and miR-128-3p agomir with target aptamer which was loaded into the chitosan nanoparticle by self-assembly. It can intervene in HCC progress by affecting AKT1 expression. Based on this, a novel, efficient, long-acting, multi-mechanism, low-dosage combination drug delivery strategy was proposed in this work and showed a prominent anti-tumor effect. NA-miR-128-3p combined with natural product Oroxin B significantly affected HCC progression by the interference with VEGF and PI3K-AKT pathways, better than using NA-miR-128-3p and Oroxin B alone. Taken together, this nanoparticle and combinative administration compensate for the shortcomings of the fragile RNA drugs and the low activity of natural products, with high prospects in HCC treatment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Run Cai,Likun Wen,Yihua Cao,Yindan Wu,Yichen Song,Xinyu Wang,Hanyang Zhou,Yurui Zhang,Xiaoping Dai,Xin Zhang
The benzene-methanol alkylation offers a strategic route to valorize methanol surplus and meets the growing demand for high-purity aromatics. For industrially viable shaped catalysts, achieving a balance between sufficient acidity and optimal diffusion capacity remains critical. Traditional shaping methods using binders inadvertently compromise mass transfer efficiency within zeolite crystals while introducing strong acid sites that disrupt the tailored weak-acid properties. To overcome these limitations, we developed a dual-approach strategy employing 1) B-Mg-co- substitution in ZSM-5 frameworks to effectively suppress ethylbenzene generation while enhancing catalytic durability, and 2) recrystallization-driven structural engineering to create binder-free architectures featuring cheese-like macropore. Intelligent gravimetric analysis (IGA) and fluorescence probe diffusion mapping further reveals three-dimensionally interconnected micro-meso-macroporous networks that facilitate enhanced molecular transport for both small and bulky aromatic species. The optimized catalyst demonstrates remarkable stability during extended operation (1008 h) under 460 °C, 0.4 MPa and 2.5 h −1 , achieving 45–50 % benzene conversion (X B ) with toluene selectivity (S T ) ~50 %, C 8 selectivity (S C8 ) ~37 %, C 9+ selectivity (C 9+ ) ~ 14.0 %, and yield of EB in C 8 (Y EBinC8 ) <9 %. This work establishes a morphology-directed synthesis protocol for isomorphously substituted zeolites, offering a scale-up manufacturing route for acid site-engineered catalysts that combine hierarchical porosity with optimized Brønsted-Lewis acid synergy.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Tiantian Wang,Jianhong Wei,Furong Shi,Hejie Wang,Jinye He,Xudong Lv,Yuan Zhou,Pengzhi Guo,Chenglong Wang,Yangjun Xia
In recent years, polymerized small molecule acceptors (PSMAs) have emerged as a promising strategy that combines the strong absorption of small molecules with the film-forming ability and stability of polymers, thereby greatly boosting the performance of all-polymer solar cells (all-PSCs). We designed a non-fused acceptor, DTBT-IC, and its polymeric counterpart, PDTBT-Br-T, by selecting DTBT as the core, bithiophene as the π-bridge, and IC as the terminal group. PDTBT-Br-T was synthesized via Stille coupling and used with PM6 as the donor to fabricate organic solar cells. The PDTBT-Br-T-based device delivered superior performance, with a VOC of 1.050 V, JSC of 9.32 mA cm−2, FF of 45.33%, and a PCE of 4.44%, outperforming the DTBT-IC-based counterpart. Morphological and structural analyses revealed that PDTBT-Br-T exhibits more ordered backbone stacking and defined phase separation, enhancing exciton dissociation and charge transport, and suppressing energy loss. The study highlights that polymerization of DTBT-IC enhances intermolecular packing and microstructure, offering critical design insights for efficient all-PSCs.
✓ 已验证
DOI
高影响因子
JOURNAL OF ORGANIC CHEMISTRY
·
2024
·
IF 3.3
Yangyi Zhang,Guisheng Deng
In the Au(PPh3)Cl/AgOTf/TsOH/MeCN/N2/25 °C system, diastereoselective synthesis of cis-3a,8a-dihydrofuro[2,3-b]benzofuran derivatives with a substituent at the 8a-position has been achieved by using 1-(2-hydroxyphenyl)-3-arylprop-2-yn-1-ols and β-oxoketones (amides, acid) as starting materials. The studies revealed that the acidity of methylene in substrates plays a key role in the differential reactions. A stronger acidity of the methylene is favorable in the desired conversion. The unique role of TsOH as an additive acid in the synthesis strategy has been rationalized. 2-Oxo-phosphonate, 2-oxo-sulfonate, and 3-oxobutanoate are suitable for the conversion.
✓ 已验证
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2022
·
IF 9.221
Jing Ding,Mengming Sun,Jinming Liu,Xueqiang Liu,Wenlong Hou,Lu Liu,Haiquan Zhang
The photophysical properties of the hydrogen bond complexes consisting of low-barrier hydrogen bond (LBHB) depend on their environmental condition. However, the stimuli responsive materials based on LBHB are still a challenging problem. Here, we report a novel material system which has high color response to CO 2 based on the position changes of the proton between the two heavy atoms in the low barrier hydrogen bond. Perylene diimide radical anion/branched polyethyleneimine hydrogen bonding complex (TFPDI-b-PEI) linked by low-barrier hydrogen bond ([O 1 -----H 1 ---N 1 ] −1 ) is obtained and it shows the maximum absorption of 789 nm. Meanwhile, the maximum absorption of TFPDI-b-PEI appears at 561 nm with purple when CO 2 is adsorbed in the branched polyethyleneimine . In essence, the geometry of LBHB in TFPDI-b-PEI can switch between two types of hydrogen bond ([O 1 ----H 1 ----N 1 ] −1 and [O 1 -----H 1 ---N 1 ] −1 ) via adjusting the interaction between the surrounding molecule and amine groups in LBHB by interaction of CO 2 with TFPDI-b-PEI. Further the TFPDI-b-PEI shows excellent color switching and colorimetric sensing performance for CO 2 aqueous solution and its gas based on this hydrogen bond dynamic characteristic.
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DOI
高影响因子
Foods
·
2025
·Vol. 14
·期 8
·1292
·
IF 5.1
Chunxiao Li,Xiaolei Zhao,Xiaofei Yin,Shuting Zhang,Jinxing He
2-amino-1-methyl-6-phenyl-imidazo [4,5-b] pyridine (PhIP) is a harmful compound that is formed during the high-temperature processing of meat products, and the risk of cancer may be increased with the prolonged intake of foods containing high levels of PhIP. This study aimed to develop an innovative detection method specifically for PhIP in meat products. Utilizing hydrogel-molecular-imprinting electrochemical sensing technology, the preparation conditions of molecularly imprinted hydrogels (MIHs) were optimized. Consequently, a highly selective and rapid detection method for PhIP was successfully established, integrated with an electrochemical workstation. The results indicate that the prepared MIHs exhibit an excellent specific recognition performance for PhIP. The sensor exhibited a linear response within the concentration range of 1.0–200.0 ng/mL, with a detection limit of 0.07 ng/mL (S/N = 3) under optimized conditions. In addition, the accuracy and reliability of the method were verified by spiked recovery experiments, and the recoveries ranged from 75.9% to 108.8%, which demonstrated its high accuracy and potential for practical application.
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DOI
PubMed
高影响因子
FITOTERAPIA
·
2018
·
IF 2.642
Hong-Bo Xu,Tong-Hua Yang,Pei Xie,Zhi-Shu Tang,Xiao Song,Huai-Li Xu,Yan-Hong Li,Dong-Bo Zhang,Yan-Ru Liu,Yan-Ni Liang,Yu Zhang,Shi-Jun Liu,Si-Min Wei,Chen Sun,Hong-Bo Liu,Chong Deng,Wei Wang
Gracilistones A ( 1 ) and B ( 2 ), two new eudesmane-type sesquiterpenoids with an unusual tetrahydrofuran-fused 6/6/5 tricyclic ring system, were obtained from Acanthopanax gracilistylus under the guidance of LC-MS investigation. Their structures and absolute configurations were assigned by extensive spectroscopic analyses and quantum calculation methods. Compounds 1 and 2 showed potent inhibitory activity against LPS-induced nitric oxide production in RAW 264.7 macrophages, compared with the positive control L-NMMA. In addition, compounds 1 and 2 were also evaluated for their antioxidant (DPPH • and ABTS •+ ) and xanthine oxidase (XO) inhibitory activities, and they exhibited weak inhibitory effects at 100 μM.
✓ 已验证
DOI
PubMed
高影响因子
Human Cell
·
2025
·Vol. 39
·期 1
·19
·
IF 3.1
Zhu Linwen,Li Ni,Shi Huoshun,Song Jie,Fang Zhongjie,Shen Qinbo,Zhu Xiuying,Dan Yanggang,Shao Guofeng,Sun Lebo
Circular RNAs (circRNAs) are involved in cardiovascular disease development and progression. We identified has_circ_0000437 from three pairs of clinical samples using a circRNA microarray and predicted the has_circ_0000437 sponge let-7f-5p using bioinformatics. We expanded the sample to confirm the expression, correlation, and diagnostic value of has_circ_0000437, let-7f-5p and RAS-like proto-oncogene B (RALB) in rheumatic valvular heart disease (RVHD). The effects of has_circ_0000437 and let-7f-5p on biological function were observed in hVICs cells. To explore the molecular pathogenesis of has_circ_0000437 in the RVHD process, the target binding protein RAS-like proto-oncogene B (RALB) of has_circ_0000437 was obtained using label-free mass spectrometry and parallel reaction monitoring. The influence of the has_circ_0000437/let-7f-5p/RALB axis on the expression of mitogen-activated protein kinase (MAPK)-related proteins in the inflammatory signaling pathway predicted by Kyoto Encyclopedia of Genes and Genomes (KEGG) during RVHD was measured using Western blotting. We found that let-7f-5p was at low expression and negatively correlated with has_circ_0000437, which had a diagnostic value with an area under the curve of 0.998 after the combined diagnosis. Has_circ_0000437 and let-7f-5p had binding sites, and let-7f-5p alleviated the effect of has_circ_0000437 on the proliferation, migration, and cycle progression of hVICs. The inhibitory effect of has_circ_0000437 on hVICs apoptosis was diminished. Mechanism studies showed that has_circ_0000437 promotes the MAPK pathway through has_circ_0000437/let-7f-5p/RALB axis. These findings suggest that the has_circ_0000437/let-7f-5p/RALB axis promotes the MAPK pathway, proliferation, migration, and cycle progression in RVHD, inhibiting the apoptosis process, thereby promoting RVHD development. This pathway may suggest a target for RVHD diagnosis and treatment.
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PubMed
高影响因子
危险品化学品经营许可证（带存储）