CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Mu Ding,Lang Chen,Yuwei Xu,Bo Chen,Jie Ding,Rulei Wu,Chao Huang,Yi He,Yongdong Jin,Chuanqin Xia
99 Tc is a β-emitting radionuclide with high fission yield, long half-time and it is urgent to remove Tc from liquid radioactive waste due to its potential toxicity for human. Herein, we presented a viologen-based cationic organic polymer (VBCOP) as a novel adsorbent with cationic sites and functional groups for efficient capture of Re/Tc(VII, IV) from aqueous medium. The results showed that this material could rapidly remove TcO 4 − /ReO 4 − from aqueous solution within 5 min and the maximum sorption capacity for Re(VII) could reach up to 444 mg g −1 , and the distribution coefficient ( K d ) towards Re(VII) and Tc(VII) reached 4.0 × 10 5 and 7.2 × 10 5 mL g −1 , respectively. And more, the adsorption mechanism was also studied by X-ray photoelectron spectroscopy (XPS), Energy dispersive spectrometer (EDS) mapping and Ion chromatography (IC), the results suggested an ion-exchange process in which the Cl − in this material was replaced by ReO 4 − . Additionally, we investigated its adsorption mechanism towards low-valent Re which was prepared by reducing ReO 4 − with NaBH 4 , and the flexible tetraaza macrocycle introduced in the material chelated with Re(IV) was confirmed by X-ray photoelectron spectroscopy (XPS) and Extended X-ray absorption fine structure (EXAFS) analysis. In general, the research exhibits a new sorbent material that can remove both TcO 4 − /ReO 4 − and the low-valent Tc/Re, and provide a new strategy to treat radioactive waste containing Tc with different valences.
研究领域:
放射化学
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环境科学
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DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Wenming Ai,Yingcui Bu,Houshi Huang,Junjun Wang,Mengjuan Ren,Yu Deng,Yicai Zhu,Sen Wang,Zhi-Peng Yu,Hongping Zhou
Mitochondrial membrane potential (MMP) and sulfur dioxide (SO2) significantly affect the mitochondrial state. In this work, TC-2 and TC-8 were constructed through side-chain engineering, in which TC-2 bearing the poorer hydrophobicity could localize on mitochondria better. Interestingly, short-wave emission was captured due to the sensitive response of TC-2 to SO2 (LOD = 13.8 nM). Meanwhile, the probe could bind with DNA, presenting enhanced long-wave emission. Encouragingly, TC-2 could migrate from mitochondria to the nucleus when MMP was decreased, accompanied by the increase of fluorescence lifetime (9-fold). Hence, TC-2 could be used for dual-channel monitoring of mitochondrial SO2 and MMP, which showed a completely different pathway from the commercial MMP detectors JC-1/JC-10. The cellular experiments showed that MMP was gradually decreased due to reactive oxygen species-triggered oxidative stress, and the SO2 level was up-regulated simultaneously. Overall, this work proposed a new method to investigate and diagnose the mitochondrial-related diseases.
研究领域:
生物技术
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细胞生物学
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分析化学
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DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Ning Qi,Yuexin Yi,Yacen Tang,Xingyan Liu,Yating Yuan,Ziping He,Xintong Shi,Yuyu Fang,Youzhou He,Siping Wei
Photocatalytic removal of tetracycline (TC) from wastewater is an advantageous method with green and efficient potentials, while the low light utilization and severe charge carrier recombination of conventional photocatalysts limit their practical application. The TiO 2 /Ti 3 C 2 derived from in-situ partly oxidation of Ti 3 C 2 MXene precursors on which Bi 2 MoO 6 (BMO) was tightly loaded was synthesized via a facile hydrothermal synthesis route. The introducing TiO 2 /Ti 3 C 2 accelerated the transfer of electrons, improving the efficiency of electron-hole separation, thus strengthened the photocatalytic performance. Under optimum conditions, the BMO/TiO 2 /Ti 3 C 2 composite significantly removed 87.54 % TC from wastewater within 150 min, which was higher than the original counterparts and remained almost unchanged after four cycles. The active species trapping experiments and ESR analysis displayed that •O 2 - played a dominant role in TC degradation. The possible degradation pathways were also deduced through liquid chromatography-mass spectrometry (LC-MS) analysis experiments, demonstrating that the terminal products of degradation were mainly CO 2 and H 2 O, confirming the potential of BMO/TiO 2 /Ti 3 C 2 photocatalyst for the environmentally friendly treatment of antibiotic pollutants in wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2022
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IF 8.91
Tong Zhu,Jinping Jiang,Jisheng Wang,Zhening Zhang,Jiao Zhang,Jing Chang
A magnetic FeCo 2 O 4 /Co 3 O 4 nanocomposite was successfully synthesized by a facile hydrothermal method as an efficient activator for persulfate (PS) activation to degrade tetracycline (TC) in an aqueous solution. TC removal and mineralization efficiencies reached up to 91.63% and 43.57% in 120 min in the FCC-3/PS system, respectively. The mixed-valence of Fe/Co in the nanocomposite catalyst was beneficial for electrons transfer between Co and Fe elements and enhanced the redox circulation of Fe and Co in between divalent and trivalent. Surficial analysis and phosphate adsorption test confirmed the existence of –OH groups on the surfaces of FeCo 2 O 4 /Co 3 O 4 nanocomposite. Fe/Co redox and surficial hydroxyl in the catalyst played significant roles in the TC potentiation degradation, which was contributed by the plenty of adsorbed –OH groups and excellent dispersity of FeCo 2 O 4 in the FeCo 2 O 4 /Co 3 O 4 composite. The sulfate radicals were major species followed by the hydroxyl radicals , and the surficial adsorbed hydroxyl made great contributions to radical generation. The cycling test and intermediate toxicity analysis indicated that the nanocomposite was considered stable and practicable in water treatment . This work demonstrated that the FeCo 2 O 4 /Co 3 O 4 nanocomposite was an effective and environ-friendly catalyst towards PS activation for removing organic pollutants from water.
研究领域:
环境科学
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催化化学
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产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
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2022
·Vol. 52
·期 4
·955-961
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IF 4.569
Zhuoer Cai,Xinyi Zhang,Shiyue Xiao,Shuwang Ge,Xianmin Liu,Yinan Zhang,Long Chen,Xiu-Ni Hua,Baiwang Sun
Phase change materials (PCMs) have drawn increasing attention for their promising applications in thermal switches, data communication, and energy storage. Because of the complexity of the interactions between molecules, it is still a challenge to design PCMs with a desired high phase transition temperature (Tc). In this study, a one-dimensional hybrid perovskite of (TEACCl)PbBr3 (1, TEACCl = Et3NCH2Cl) was successfully designed and synthesized with a Tc = 390 K. Disordering of TEACCl+ on the heating process is the origin of the structural phase transition of 1 from the P21/c to P63/mmc structure. It is noted that the phase transition is associated with an excellent switchable dielectric property, which indicates that 1 has the potential to be applied to sensor equipment. After calculation, 1 is an infrequent indirect bandgap semiconductor with an energy gap of 3.57 eV. Moreover, 1 exhibits strong red fluorescence under irradiation of UV light. This work will provide guidance for designing high Tc switching materials.
研究领域:
材料科学
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化学
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物理学
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电气工程
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DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
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2023
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IF 8.3
Wenhui Chen,Tianxin Kang,Fenqi Du,Peipei Han,Meiling Gao,Peng Hu,Feng Teng,Haibo Fan
One-dimensional shaped ZnGa 2 O 4 , ZnO and ZnGa 2 O 4 /ZnO nanofibers were successfully prepared by electrostatic spinning technique and the photocatalytic degradation performance of tetracycline hydrochloride (TC-HCl) were studied. It was found that the S-scheme heterojunction formed in the ZnGa 2 O 4 /ZnO could greatly reduce the recombination of the photogenerated carriers and therefore improve the photocatalytic performance. By optimizing the ratio of the ZnGa 2 O 4 and ZnO, the largest degradation rate could reach 0.0573 min −1 , which was 20 times of the self-degradation rate of TC-HCl. It was verified that the h + played the key role in the reactive groups for the high performance decomposition of TC-HCl by capture experiments. This work provides a new method for the highly efficient photocatalytic degradation of TC-HCl.
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
PubMed
高影响因子
Analytical Methods
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2024
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IF 2.7
Min Zhou,Jie Hao,Yanzhi Wu,Xiaolin Lu,Jianbo Song,Luhui Ren,Junwei Han
Chiral metal–organic frameworks (CMOFs) with chiral selectivity are one of the high-quality stationary phases for capillary electrochromatography (CEC). However, there is a problem of unsatisfactory enantioseparation performance of capillary columns due to insufficient loading. In this work, a lamellar CMOF (Cu-TC) was grown in situ on the surface of the monolith in a capillary monolithic column to obtain a Cu-TC@monolithic column. The CEC system constructed based on the Cu-TC@monolithic column shows a satisfactory chiral separation performance. Compared with the Cu-TC-based coated column (Cu-TC@coated column), the enantioseparation performance of the CEC system based on the Cu-TC@monolithic column was greatly improved, and the resolutions (Rs) of the model analytes were increased by 80–500%. In addition, the effects of experimental conditions such as the number of cycles of Cu-TC in situ growth, buffer concentration, buffer pH, organic solvent addition and applied voltage on the performance of CEC were also investigated. Finally, the chiral selection mechanism of the stationary phase was explored by selective adsorption experiments. The present work provides a new idea for the development of capillary stationary phases, which has great potential considering the diversity of CMOFs.
研究领域:
分析化学
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材料科学
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分离科学
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DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2026
·Vol. 101
·期 6
·1263-1272
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IF 2.7
Zahid Iqbal,Jia-Yao Gao,Meng-Meng Wang,Wen-Fang Cai,Yun-Hai Wang
BACKGROUND The environmental persistence and resistance-promoting potential of tetracycline demands an efficient catalytic system capable of its complete oxidation. Herein, a bamboo derived Fe-N co-doped activated biochar (designated as Fe-N/C-A-2P) was engineered by two-step synthesis strategy to activate H 2 O 2 in a heterogeneous Fenton system for efficient tetracycline (TC) degradation. RESULTS The catalyst under optimized conditions (catalyst dosage = 0.5 g L −1 , pH = 3, H 2 O 2 concentration = 300 mg L −1 , temperature = 25 °C, and TC = 70 mg L −1 ) achieved about 90% TC removal within 60 min. It exhibited significantly enhanced reaction kinetics and sustained performance over multiple cycles with minimal iron leaching, indicating strong Fe retention and preserved stability. Radical quenching analysis confirmed a dual oxidative route, involving both radical (·OH and O 2 · − ) and non-radical ( 1 O 2 ) mechanism for TC degradation. The catalyst displayed strong resistance to common inorganic anions and humic substances, highlighting its applicability beyond idealized conditions. CONCLUSION These findings demonstrate that Fe-N/C-A-2P catalyst serves as an efficient heterogeneous Fenton catalyst for removal of TC, providing a feasible approach for mitigating antibiotic contamination in aqueous media. © 2026 Society of Chemical Industry (SCI).
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高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-7
·
IF 17.694
Xu Haojie,Guo Wuqian,Ma Yu,Liu Yi,Hu Xinxin,Hua Lina,Han Shiguo,Liu Xitao,Luo Junhua,Sun Zhihua
Metal-free antiferroelectric materials are holding a promise for energy storage application, owing to their unique merits of wearability, environmental friendliness, and structure tunability. Despite receiving great interests, metal-free antiferroelectrics are quite limited and it is a challenge to acquire new soft antiferroelectric candidates. Here, we have successfully exploited binary CMBr x I 1- x and CMBr x Cl 1- x solid solution as single crystals (0 ≤ x ≤ 1, where CM is cyclohexylmethylammonium). A molecule-level modification can effectively enhance Curie temperature. Emphatically, the binary CM-chloride salt shows the highest antiferroelectric-to-paraelectric Curie temperature of ~453 K among the known molecular antiferroelectrics. Its characteristic double electrical hysteresis loops provide a large electric polarization up to ~11.4 μC/cm 2 , which endows notable energy storage behaviors. To our best knowledge, this work provides an effective solid-solution methodology to the targeted design of new metal-free antiferroelectric candidates toward biocompatible energy storage devices.
研究领域:
材料科学
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能量存储
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电化学
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DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Yingying Jian,Nan Zhang,Yunzhe Bi,Xiyang Liu,Jinhai Fan,Weiwei Wu,Taoping Liu
Utilizing electronic noses (e-noses) with pattern recognition algorithms offers a promising noninvasive method for the early detection of urinary bladder cancer (UBC). However, limited clinical samples often hinder existing artificial intelligence (AI)-assisted diagnosis. This paper proposes TC-Sniffer, a novel bibranch framework for few-shot UBC diagnosis, leveraging easily obtainable UBC-related volatile organic components (VOCs) as auxiliary classification categories. These VOCs are biomarkers of UBC, helping the model learn more UBC-specific features, reducing overfitting in small sample scenarios, and reflecting the imbalanced distribution of clinical samples. TC-Sniffer employs intensity-based augmentation to address small sample size issues and focal loss to alleviate model bias due to the class imbalance caused by auxiliary VOCs. The architecture combines transformers and temporal convolutional neural networks to capture long- and short-range dependencies, achieving comprehensive representation learning. Additionally, feature-level constraints further enhance the learning of distinctive features for each class. Experimental results using e-nose data collected from a custom-designed sensor array show that TC-Sniffer significantly surpasses existing approaches, achieving a mean accuracy of 92.95% with only five UBC training samples. Moreover, the fine-grained classification results show that the model can distinguish between nonmuscle-invasive bladder cancer (NMIBC) and muscle-invasive bladder cancer (MIBC), both of which are subtypes of UBC. The superior performance of TC-Sniffer highlights its potential for timely and accurate cancer diagnosis in challenging clinical settings.
研究领域:
医学
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人工智能
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生物标志物研究
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DOI
PubMed
高影响因子
CURRENT APPLIED PHYSICS
·
2022
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IF 2.856
Xiaoxue Lian,Yan Li,Yunling Zou,Dongmin An,Qiong Wang,Qingjun Zhou,Xueqi Li
The g-C 3 N 4 nanosheets were synthesized by a multistage program calcination with different heating rate, which was an easy, low-cost, and quick method. The morphology and structure of samples were characterized by various techniques. The performance evaluation of the samples was tested by degrading Rhodamine B, Methylene Blue, Tetracycline Hydrochloride and P-Nitrophenol in visible light . The results show that the photodegradation properties of TP-g-C 3 N 4 prepared by multistage program calcination are the best than others. In particular, the degradation rate of TP-g-C 3 N 4 to Rhodamine B reached 99.6% in just 4 min. TP-g-C 3 N 4 catalyst has excellent stability and recycling performance. According to free radical capture experiments, •O 2 − may be the main active species for pollutant degradation. The possible photocatalytic degradation mechanism was also discussed. Due to the high specific surface area and a narrow band gap, the TP-g-C 3 N 4 becomes a promising photocatalyst.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
Toxics
·
2022
·Vol. 11
·期 1
·20
·
IF 4.472
Hongyou Wan,Chen Wang,Lin Gong,Xinfeng Zhu,Jingwei Yan,Jiajia Lu,Wei Zhang
The generation and accumulation of discarded coal gangue (CG) have severe environmental impacts. CG can adsorb other pollutants in the aquatic environment. However, previous studies have not assessed whether CG can adsorb the emerging contaminant tetracycline hydrochloride (TC). Here, discarded CG taken from a mine was pretreated by crushing, cleaning, and sieving and subsequently applied to the adsorption of TC. The adsorption studies were carried out by batch equilibrium adsorption experiments. Our findings indicated that the adsorption behavior could be accurately described using the quasi-first order kinetic and Langmuir adsorption isotherm models, indicating that monolayer adsorption was the main mechanism mediating the interaction between CG and TC. The adsorption process was classified as a thermodynamic endothermic and spontaneous reaction, which was controlled by chemical and physical adsorption, including electrostatic interaction and cation exchange. The pH of the solution had a great influence on the TC adsorption capacity of GC, with higher adsorption occurring in acidic environments compared to alkaline environments. This was attributed to the changes in CG Zeta potential and TC pKa at different pH conditions. Collectively, our findings demonstrated the potential applicability of discarded CG for the adsorption of TC and provided insights into the adsorption mechanisms.Keywords:natural coal gangue;spent coal-associated waste;removal;tetracycline hydrochloride;antibiotics pollutant;water environment
研究领域:
环境科学
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污染控制
·
吸附机制研究
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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）