APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Jianfang Li,Zhenxing Yang,Chaofeng Wang,Shuilin Wu,Yufeng Zheng,Zhenduo Cui,Hui Jiang,Zhaoyang Li,Shengli Zhu,Liheng Feng,Xiangmei Liu
Photocatalytic materials are one of the most promising alternatives of antibiotics for wound disinfection, and the bacteria-killing efficacy is restrained by photocatalytic performance. Herein, Ti 3 C 2 MXene-anchored 2D metal-organic frame (MOF) nanosheets were constructed to enhance the photocatalytic performance through interface engineering strategy by in-situ growth of 2D MOF on Ti 3 C 2 nanosheets. On the one hand, the close contact between them decreased the bandgap of 2D MOF, improving the yield of photogenerated electrons. On the other hand, it not only provided a rapid electron transfer channel across the interface but also induced the formation of Schottky junction at the interface. Consequently, the separation efficiency of photo-generated electron-hole pairs was significantly enhanced by rapid transfer and inhibition of electron backflow. Thus, under 660 nm plus 808 nm light, MOF/Ti 3 C 2 killed 99.73 ± 0.12% of Staphylococcus aureus . This work will provide insights for designing photo-responsive materials through in-situ interfacial engineering strategies.
研究领域:
材料科学
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生物学
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医学
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产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Wenqiang Liu,Meng Zhou,Heqing Fu
A ternary Ag@ZnO@Ti 3 C 2 MXene heterojunction (AZM) is synthesized by hybridizing ZnO and Ag nanoparticles with the MXene via a simple hydrothermal and chemical deposition method. The addition of ZnO and Ag can effectively compensate for MXene’s narrow bandgap property, promote charge carrier separation, and improve visible light absorption , thereby enhancing photocatalytic activity. The photocatalytic activity of the AZM is evaluated through the removal efficiency of methylene blue (MB) dye and levofloxacin (LVX) under visible light irradiation. The results show that the optimized ternary AZM heterojunction photocatalysts (AZM-15) possesses the maximum degradation of MB (90.54%) with a reaction rate constant of 0.0473 min −1 , while the maximum degradation of LVX (86.76%) has a reaction rate constant of 0.0408 min −1 . Moreover, the AZM composite exhibits excellent stability, which explains its MB removal rate of 83.59% and LVX removal rate of 80.03% after five cycles. The results of trapping experiments and EPR demonstrated that the main active species in the MB and LVX photodegradation process are·OH and·O 2 - . This work not only elucidates a possible mechanism of photocatalytic degradation of organic pollutants but also provides a pathway to design new bandgap photocatalysts for mitigating environmental pollution .
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2022
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IF 5.532
Pingan Song,Weiying Wang,Jingguo Li,Shaokui Cao,Jun Shi
Ti 3 C 2 MXene/gold nanorods (Ti 3 C 2 @AuNRs) nanosheets , a novel sandwich-like nanohybrids , have attracted extensive attention in the biomedical field due to its synergistically enhanced near-infrared (NIR) responsiveness and strong absorption in NIR region. In this study, hydroxyapatite (HAP) was self-assembled in situ around Ti 3 C 2 @AuNRs core and then combined with polydopamine (PDA) to prepare NIR-/pH- dual responsive Ti 3 C 2 @AuNRs/HAP/PDA nanocomposites. The obtained Ti 3 C 2 @AuNRs/HAP/PDA nanocomposites exhibited prominent photothermal conversion efficiency (38.6%) due to the synergistically enhanced NIR-responsive of Ti 3 C 2 @AuNRs. Ti 3 C 2 @AuNRs/HAP/PDA nanocomposites displayed excellent drug loading capacity (88.3%) for antitumor drug doxorubicin hydrochloride (DOX) because of the electrostatic interaction of negatively charged HAP nanorods and positively charged DOX, along with the distinct adhesiveness of PDA. In addition, the disintegration of HAP under acid medium and the strong NIR absorption of Ti 3 C 2 @AuNRs endowed the Ti 3 C 2 @AuNRs/HAP/PDA nanocomposites with pH-/NIR-dual responsive drug release behavior. In this paper, a feasible method is presented to prepare Ti 3 C 2 -based drug carriers with high drug loading capacity and remarkable multi-responsive drug release properties, which holds great promise in the field of remote controlled drug delivery and photothermal therapy.
研究领域:
生物医学工程
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纳米医学
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材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Haoran Song,Daoyuan Zu,Changping Li,Rui Zhou,Yuwei Wang,Wei Zhang,Shiting Pan,Yang Cai,Zhuo Li,Yongming Shen,Jun Ma
Ultrafast activation of peroxymonosulfate (PMS) by reduction of trace Fe 3+ at the μg L -1 level with the ecofriendly Ti 3 C 2 MXene under neutral and alkaline conditions was achieved for the first time. Complete removal of model pollutant sulfamethoxazole (SMX) was accomplished within about 5 min and 10 min at pH 7.0 and 9.0, respectively. The degradation rate of SMX in Fe 3+ /PMS/MXene process was increased by 72 times compared with that in the absence of Ti 3 C 2 MXene (pH = 7). Methanol/ tert -butanol quenching experiment and electron spin resonance (ESR) measurement demonstrated that hydroxyl radical ( • OH) and sulfate radical (SO 4 •– ) were the primary reactive species. The strong reducibility of Ti 3 C 2 MXene played the key role in triggering the Fe(III)/Fe(II) cycle and accelerating PMS activation. The reducibility of Ti 3 C 2 MXene towards Fe 3+ was measured to be 3.35:1–5.03:1 (mol:mol), far higher than that of hydroxylamine (1:1). Because the confinement effect of MXene inhibited the hydrolysis of iron ions, Fe 3+ /PMS/MXene process exhibited excellent performance even under neutral and alkaline conditions. This study improved the understanding of MXene in Fenton-like reaction and provided an ideal Fenton-like process with ultra-low metal consumption, high efficiency and broad pH range.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Keqing Zhou,Kaili Gong,Chenchao Wang,Mengqing Zhou,Jun Xiao
In this work, a bilayer nanocoating was constructed on the surface of flexible polyurethane (FPU) foam with Ti 3 C 2 MXene and polyethyleneimine-modified silica nanoparticles (mSiO 2 -NP@PEI) through layer-by-layer self-assembly technology, successfully obtaining modified flexible polyurethane composites (MFPU) with excellent flame retardancy, photothermal conversion and solar water desalination properties. The structure and morphology of MFPU foams were characterized by X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), Transmission electron microscope (TEM) and Scanning electron microscope (SEM). The MFPU with three coating cycles (MFPU3) had the best flame retardancy and smoke suppression performances, mainly in terms of decreased peak heat release rate (pHRR), peak smoke production rate (pSPR) and total smoke production (TSP) by 71.3 %, 62.1 % and 74.5 %, respectively, compared to those of neat FPU. In addition, MFPU foams exhibited extraordinary light-to-heat conversion and solar water desalination capabilities. MFPU3 could reach 120 °C in 138 s and its steam conversion efficiency η was as high as 89.6 %, which was 116.0 % higher than that of unmodified foam and had a 262.8 % increase over pure water. The flame retardant MFPU foams with excellent photothermal conversion efficiency will exhibit great application potential in solar water desalination and power generation.
研究领域:
材料科学
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能源科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
ACS Omega
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2020
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IF 2.87
Yusi Peng,Ping Cai,Lili Yang,Yingying Liu,Linfeng Zhu,Qiuqi Zhang,Jianjun Liu,Zhengren Huang,Yong Yang
Recent advances in MXenes with high carrier mobility show great application prospects in the surface-enhanced Raman scattering (SERS) field. However, challenges remain regarding the improvement of the SERS sensitivity. Herein, an effective strategy considering charge-transfer resonance for semiconductor-based substrates is presented to optimize the SERS sensitivity with the guidance of the density functional theory calculation. The theoretical calculation predicted that the excellent SERS enhancement for methylene blue (MeB) on Ti3C2 MXene can be excited by both 633 and 785 nm lasers, and the Raman enhanced effect is mainly originated from the charge-transfer resonance enhancement. In this work, the Ti3C2 MXenes exhibit an excellent SERS sensitivity with an enhancement factor of 2.9 × 106 and a low detection limit of 10–7 M for MeB molecules. Furthermore, the SERS enhancement of Ti3C2 and Au–Ti3C2 substrates exhibit higher selectivity on different molecules, which contributes to the detection of target molecules in complex solution environments. This work can provide some theoretical and experimental basis for the research on SERS activity of other MXene materials.
研究领域:
材料科学
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纳米技术
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分析化学
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光学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
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2022
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IF 6.959
Jinyue Wen,Zhicheng Sun,Yun Qiao,Yang Zhou,Yibin Liu,Qingqing Zhang,Yuanyuan Liu,Shouzheng Jiao
The liquid electrolyte causes the corresponding leakage and sealing problems in the construction of dye-sensitized solar cells (DSSCs). Currently, quasi-solid-state polymer-based electrolytes have been reported to effectively improve the leakage and volatilization of traditional liquid electrolytes in DSSCs. In this work, reduced graphene oxide (rGO) and the intercalation of MXene/rGO were utilized in the copolymer polyethylene oxide/poly(vinylidene fluoride-co-hexafluoropropylene) as a printable gel electrolyte for the preparation of quasi-solid-state DSSCs (QS-DSSCs). The effects of different contents of rGO and different ratios of MXene/rGO intercalation on the photoelectric performance of DSSCs were well studied. When the rGO content was 0.5 wt %, the power conversion efficiency (PCE) of DSSC was about 7.781%. Specifically, when the ratio of MXene/rGO was 2/1, the photovoltaic performance of DSSCs was greatly enhanced. The corresponding short current density (Jsc), open-circuit voltage (Voc), fill factor, and PCE were obtained to be 15.170 mA/cm2, 0.783 V, 0.695, and 8.255%, respectively. With the intercalation structure between MXene and rGO, the conductivity of electrolytes seemed to be improved through the possible shortening of transmission and diffusion distance of electrolyte ions. The printable electrolyte could achieve an energy conversion efficiency of 29.94% under 1000 lux illumination. A long-term stability (>95%) of QS-DSSCs was also achieved with the composite of MXene/rGO over 1000 h. Finally, this ready screen-printing technology with the electrolyte of the MXene/rGO composite in the copolymer would have great potential for the large-scale manufacture of flexible DSSCs in the future.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
LWT-FOOD SCIENCE AND TECHNOLOGY
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2024
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IF 6
Shuyue Xiong,Zijian Wu,Fang Li,Pei Zhao,Haitao Li,Huanxin Bao,Xu Yang
A self-assembled sensing interface based on Ti 3 C 2 MXene functionalized by aptamer had been successfully constructed in this work, which fully utilizes the electrical properties of Ti 3 C 2 MXene and the specific recognition ability of the aptamer. Subsequently, we studied the performance of the sensing interface using two antibiotic residues as examples. Under the optimal conditions, the sensing interface showed a linear range of 100 fM–1 μM and a limit of detection of 1 fM to detect kanamycin and tetracycline, furthermore the recovery rates were 97.15%–103.00% and 99.559%–106.36%, respectively. In addition, the sensing behaviors of aptamers specific recognition of target can be perceived by the interface, thereby exhibiting different electrical responses. Therefore, the self-assembled sensing interface not only provided a new avenue for the development of ultrasensitive technology in the food analysis field but also for investigating aptamer configurational transformations.
研究领域:
分析化学
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食品科学
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纳米技术
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生物传感器
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产品关联
DOI
高影响因子
BIOELECTROCHEMISTRY
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2022
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IF 5.76
Wenjing Lai,Jiajia Li,Mingzhe Jiang,Chaoyun Ma,Chulei Zhao,Min Wang,Pengli Li,Shijie Yan,Yu Qi,Chenglin Hong
In electrochemical immunoassays, great breakthroughs have been made in ultrasensitive detection of tumor markers by amplifying signals with coreaction accelerators. Herein, carbon nitrides with nitrogen vacancies (CNNVs) are proposed as emitter, due to the introduction of nitrogen vacancies this emitter has better ECL efficiency, the phenomena of interface electron transfer and electrode passivation are improved. At the same time, it can also promote the electrochemical reduction of coreactant, making it an attractive and potential emitter. The electrode was modified with Ag-Ti 3 C 2 MXene. It not only accelerates electron transfer and increases the effective working area of the electrode, but also acts as a coreaction accelerator to promote the electrochemical reduction of the coreactant K 2 S 2 O 8 , resulting in a strong ECL signal. The immunosensor showed a good linear relationship in the range of 10 −5 -100 ng/mL with a detection limit of 0.36 fg/mL. In addition, the excellent properties of good specificity and ultra-high stability provide an effective method for ultra-sensitive immunoassays.
研究领域:
生物分析化学
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肿瘤学
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免疫学
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纳米生物技术
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分子诊断
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转化医学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Bo Li,Peng Sun,Ruoyu Zhang,Zhenyu Wang,Zonghua Wang
The electrocatalytic hydrogen evolution reaction (HER) is widely recognized as a promising pathway for sustainable energy conversion and storage. Recently, plasmonic enhancement has attracted increasing attention as an effective strategy to improve HER performance by harvesting incident light. However, most metal nanoparticles (NPs) with excellent HER catalytic activity, such as Pt, exhibit a negligible localized surface plasmon resonance (LSPR) effect, thereby limiting their overall efficiency. In this study, we constructed a Pt NPs–Ti3C2 MXene hybrid electrocatalyst via an in situ reduction approach, in which Ti3C2 MXene simultaneously acted as the reductant, structural support, and plasmonic mediator. Under 808 nm laser irradiation, Ti3C2 MXene generated a strong LSPR effect, and the resulting hot electrons were efficiently injected into the Pt NPs/Ti3C2 MXene interface, where they actively contributed to the HER process. Consequently, the hybrid catalyst achieved an overpotential as low as 51 mV at 10 mA cm–2 and a favorable Tafel slope of 61.29 mV dec–1 while maintaining excellent stability. Finite element simulations further confirmed that the LSPR-induced local field enhancement concentrated hot electrons at the Pt NPs/Ti3C2 MXene interface, thereby lowering the activation barrier and accelerating the charge transfer. Overall, this work demonstrates a simple yet effective plasmon–catalyst coupling strategy that provides valuable insights for the design of next-generation plasmon-enhanced electrocatalysts for efficient hydrogen production.
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2021
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IF 3.764
Ke Wang,Xianhe Li,Nan Wang,Quanhao Shen,Maochang Liu,Jiancheng Zhou,Naixu Li
Solar photocatalysis has long relied on the rational design of semiconductor photocatalysts. Herein, a ternary meso-TiO2@ZnIn2S4/Ti3C2 MXene photocatalyst is prepared and demonstrated with a core–shell structure accompanied by few-layered Ti3C2 Mxene on the ZnIn2S4 shell. The success of the synthesis depends on a two-step method consisting of hydrothermal and electrostatic self-assembly procedures. The ternary heterojunction exhibits a good behavior for photocatalytic CO2 reduction. A mechanism study of the photocatalytic reaction indicates that the photogenerated charges transfer in a Z-scheme pathway. Moreover, the construction of the Schottky junction between metallic Ti3C2 and TiO2@ZnIn2S4 is extremely effective for the reduction reaction. Consequently, the photocatalytic rates toward CO and CH4 production are up to 30.5 and 34.0 μmol/g within 3 h of illumination by simulated sunlight, respectively, while the CH4 selectivity reaches 52.7%. This work provides a good strategy to achieve highly efficient photocatalytic CO2 reduction.
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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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Suzhou Xu,Can Liu,Xuping Jiang,Xinyu Wang,Shijin Zhang,Yanting Zhang,Qingguo Wang,Weiling Xiong,Jing Zhang
The performance and mechanisms of a titanium carbide (Ti 3 C 2 ) MXene modified Fe 3+ /hydrogen peroxide (H 2 O 2 ) system were compared in detail under dark and visible light conditions, with a new mechanism proposed for the reaction and reduction of MXene by Fe 3+ . Using Bisphenol A (BPA) as the target pollutant, the degradation of BPA by the Fe 3+ /H 2 O 2 system was improved after adding MXene in the dark, and the degradation rate of BPA was ≥ 95 % within 12.5 min under visible light, six times higher than that in the dark. Fe 2+ was ascertained to be the effective component responsible for H 2 O 2 activation to produce ·OH. SEM , XPS, ICP, XRD, and FTIR spectroscopy , analyses show that MXene and Fe 3+ form a complex, and then MXene reacts with Fe 3+ by breaking the Ti–C bonding to accelerate the Fe 3+ /Fe 2+ cycle. MXene uses photogenerated electrons to promote this reaction under visible light. In addition, quenching experiments and electron spin resonance spectroscopy results show that ·OH and O 2 •− are the main reactive oxygen species under visible light, while ·OH is the main active species in the dark. MXene thus effectively uses O 2 to form O 2 •− under visible light and promotes the Fe 3+ /Fe 2+ cycle. This study provides a theoretical basis for the combination of visible light catalysis and the advanced oxidation process of a Ti 3 C 2 MXene.
研究领域:
环境科学
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化学工程
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材料科学
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高级氧化过程
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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）