Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124205
·
IF 7.5
Kaige Chen,Jie Li,Yongxiang Wang,Yong Dai,Yongming Luo,Xiaohua Cao,Xiaoping Xing
Photothermal conversion of CO 2 to methane offers a promising pathway for simultaneous carbon recycling and renewable energy storage. To date, Ni-based catalysts dominate CO 2 methanation. However, their low-temperature activity under photothermal conditions still requires improvement. MTiO 2 derived from Ti 3 C 2 MXene retains its two-dimensional (2D) layered structure and excellent photothermal conversion properties. Herein, we synthesized Ru-Ni@MTiO 2 catalysts through hydrothermal treatment of Ni-impregnated MTiO 2 with controlled Ru loading ( x = 1, 3 and 5 wt%). The optimal 3Ru-Ni@MTiO 2 catalyst achieved a CH 4 production rate of 86.25 mmol·g −1 ·h −1 at 300 °C, which is 1.3-fold higher than that of the Ru-free Ni@MTiO 2 counterpart. The superior catalytic performance stems from the synergistic electronic effect between Ni and Ru and their dual-site cooperation. Electron transfer from both Ru and MTiO 2 to Ni sites elevates the electron density of metallic Ni, which weakens the H-H bond and accelerates the dissociative adsorption of H 2 . Furthermore, Ru loading not only broadens the light absorption range and promotes photogenerated charge separation, but also increases the density of moderate basic sites, thus boosting CO 2 adsorption and activation. This work provides new insights into the design of bimetallic photothermal catalysts for CO 2 methanation.
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL LETTERS
·
2026
·
IF 1.8
Sumin Xu,Jiajia Zhang,Jianying Qu
Se@Ti3C2/CNs nanocomposites were successfully prepared through combining Ti3C2 MXene with ZIF-8-derived nitrogen-doped carbon materials (CNs) and employing a selenization strategy. The morphology and structural information of the material were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Electrochemical investigation showed that this material exhibited outstanding electrocatalytic performance to acetaminophen (AP) and p-aminophenol (4-AP) and could detect them simultaneously in wider linear ranges of 0.10–400.00 μM and 0.10–330.00 μM respectively with detection limits of 45.7 and 46.0 nM, respectively. Analysis of water samples and artificial urine shows that the sensor based on this material provides satisfactory results for AP and 4-AP with satisfactory selectivity (current change is less than 5% of the initial value) and stability (current retains above 95% of its initial response after 10 days of storage), which offers potential applications in drug analysis and environmental monitoring.
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Jiawei Deng,Sai Teng,Dan Li,Jiren Yuan,Feigao Xu
In this study, novel magnetic Fe 3 S 4 /Ti 3 C 2 MXene composites were successfully synthesized via a hydrothermal method and employed as a highly efficient photo-Fenton catalyst for the degradation of tetracycline hydrochloride (TCH). The optimized composite (Fe 1 M 0.5 ), with a Fe 3 S 4 : Ti 3 C 2 MXene mass ratio of 1:0.5, exhibited exceptional catalytic performance under visible light, achieving a TCH removal efficiency of 93.9 % within 90 min (pH = 4.2, 10 mM H 2 O 2 , 0.3 g L −1 catalyst). The introduction of Ti 3 C 2 MXene significantly mitigated Fe 3 S 4 agglomeration, enhanced charge carrier separation, and broadened the operational pH range (2.2–7.2). Mechanistic studies revealed that the TCH degradation process was dominated by the synergistic effects of •OH, •O 2 − , h + , and e − dominated, which were facilitated by the Fe 3+ /Fe 2+ and Ti 4+ /Ti 3+ redox cycles as well as the formation of Schottky heterojunction. The composite demonstrated robust stability (>80 % TCH degradation efficiency after five cycles) and versatility in degrading diverse pollutants (e.g., RhB, MB). Magnetic characterization confirmed its easy recovery (10 emu g −1 saturation magnetization), and interference tests indicated a high tolerance to common inorganic anions (e.g., Cl − , SO 4 2− , NO 3 − ). This work highlights the potential of Fe 3 S 4 /Ti 3 C 2 MXene composites as sustainable, multifunctional catalysts for environmental remediation, offering insights into the design of MXene-based hybrid systems for advanced oxidation processes.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Qian Zhong,Jin Liu,Gaoke Zhang
Visible-light photocatalytic activation of peroxymonosulfate (PMS) is a promising strategy for treating refractory organic pollutants. In this study, a novel nitrogen-doped TiO 2 /Ti 3 C 2 MXene composite (N-TiO 2 /Ti 3 C 2 ) was synthesized via an impregnation-calcination method using cetyltrimethylammonium bromide (CTAB) as the nitrogen source. N-doping effectively narrowed the bandgap of TiO 2 , while the highly conductive Ti 3 C 2 MXene served as an electron-transfer platform, thereby synergistically enhancing light absorption and charge carrier separation. The N-TiO 2 /Ti 3 C 2 exhibited a Brunauer-Emmett-Teller surface area of 35.86 m 2 /g, approximately 1.94 times higher than that of the undoped TiO 2 /Ti 3 C 2 , due to CTAB intercalation-induced structural regulation. Under LED visible light, the N-TiO 2 /Ti 3 C 2 /PMS system achieved 98.5% of rhodamine B degradation within 100 min and 81.3% of tetracycline degradation within 40 min, with good stability over a wide pH range (3.1-10.0). Mechanistic studies identified that sulfate radicals (SO 4 • − ), singlet oxygen ( 1 O 2 ), and holes (h⁺) were the dominant reactive species. LC-MS analysis elucidated the degradation pathways of rhodamine B and tetracycline. This study presents an efficient MXene-based photocatalyst for PMS activation, offering a promising strategy for wastewater treatment.
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Xiaoyue Chen,Songge Zhang,Xiu Qian,Zhangqian Liang,Yanjun Xue,Xiaoli Zhang,Jian Tian,Ye Han,Minhua Shao
Herein, we assemble semi-metallic 1T′ phase MoS 2 on the surface Ti 3 C 2 MXene (1T′-MoS 2 /Ti 3 C 2 composite) by one-step hydrothermal method for nitrogen fixation. 1T′-MoS 2 /Ti 3 C 2 composites present a high ammonia yield rate of 31.96 µg h −1 mg −1 cat. at − 0.95 V vs. RHE and a Faradaic efficiency (FE) of 30.75% at − 0.7 V, which is much better than pure 1T′-MoS 2 and pure Ti 3 C 2 MXenes alone. Furthermore, the 1T′-MoS 2 /Ti 3 C 2 composites exhibit good selectivity and stability with no significant decrease in ammonia yield rate and FE. Density functional theory (DFT) calculations reveal that 1T′-MoS 2 /Ti 3 C 2 composite makes the activation and further reduction of *N 2 more thermodynamically favorable than pure 1T′-MoS 2 . 1 5 N isotopic labeling experiment confirms that nitrogen in produced ammonia originates from N 2 in the electrolyte.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
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.
✓ 已验证
产品关联
DOI
高影响因子
BIOELECTROCHEMISTRY
·
2021
·
IF 5.373
Mengmeng Zhang,Lisha Mei,Li Zhang,Xiao Wang,Xiaochen Liao,Xiuwen Qiao,Chenglin Hong
Electrochemical immunoassays are commonly used to detect biomarkers and Ti 3 C 2 MXene anchored CuAu-LDH two-dimensional hydroxide heterojunctions for dual-mode electrochemical immunosensors were fabricated in this work. Layered double hydroxides have a large surface area, high chemical stability, tunable metal composition and interchangeable anions, however, the insulating nature of LDH further limits its catalytic performance. For this reason, Ti 3 C 2 Mxenes were introduced to improve this problem. 2D layers of Ti 3 C 2 Mxenes with large specific surface area and excellent conductivity have been well proven and widely used. And the surface of Ti 3 C 2 Mxenes (due to the presence of abundant surface functional groups), will facilitate the anchoring of metal ions and the nucleation of LDH. In addition, its excellent electrical conductivity will facilitate the electron transfer between Cu 2+ and Cu + . The immunosensor not only showed a heavy square wave voltammetry (SWV) signal. It also exhibited high electrocatalytic activity for H 2 O 2 redox reactions and improves the sensitivity of the Ampere Current (i-t) detection. The CEA immunosensor developed in this study showed a wide linear response (0.0001–80 ng/mL) and the lowest detection limits (SWV: 33.6 fg/mL and i-t: 45.4 fg/mL S/N = 3). The results confirmed the excellent analytical capability of the immunosensor.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2021
·
IF 17.881
Pengfei Yan,Liang Ji,Xiaopeng Liu,Qinghua Guan,Junling Guo,Yonglong Shen,Haijun Zhang,Weifeng Wei,Xinwei Cui,Qun Xu
2D heterostructures offer a great opportunity in seeking high-performing energy storage materials ; however, performance ceiling exists, limited by their van-der-Waals (vdW) interactions. Here, we explore a novel 2D, amorphous MoO 3−x (aMoO 3−x ) on Ti 3 C 2 -MXene, non-vdW heterostructure via a facile synthesis route. Density functional theory computations suggest that the non-vdW heterostructure can strongly stabilize aMoO 3−x while maintaining electrical conductivity at a high level. Facile 2D Li-ion diffusion can then be achieved in the restacked 2D non-vdW heterostructures due to the weakened interactions between two defective MoO 3−x layers, leading to a capacitor-like interlayer diffusion reaching a large capacity of 426 C g −1 on the surface of the amorphous layer and a diffusion-controlled intralayer diffusion of 546 C g −1 within the amorphous layer. These characteristics optimize Li-ion storage kinetics while achieving full capacities of amorphous materials with high stability. This work might offer a feasible platform of 2D non-vdW heterostructures for boosting and understanding Li-ion storage performance.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Haoran Song,Yuwei Wang,Zheng Ling,Daoyuan Zu,Zhuo Li,Yongming Shen,Changping Li
In-situ construction of heterojunction photocatalyst on two-dimensional (2D) Ti 3 C 2 MXene substrate has been proved to be a feasible method to enhance the photocatalytic degradation of organic pollutants. However, the limited interlayer spacing of 2D Ti 3 C 2 hinders the in-situ growth of TiO 2 photocatalyst. Herein, the intercalation strategy was developed in deep eutectic solvents (DESs) method to achieve interlayer expansion of Ti 3 C 2 and improve Ti 3 C 2 -derived photocatalyst performance. Because of the intercalation of choline cations, the DESs method synthesized Ti 3 C 2 (Ti 3 C 2 -DES) had the larger c -lattice parameter than that of traditional HF method synthesized Ti 3 C 2 (Ti 3 C 2 -HF). The interlayer space of Ti 3 C 2 -DES could be intercalated with more water molecule for oxidization of the Ti atoms, which remarkably promoted the in-situ growth of TiO 2 crystals. The formed heterojunction between (001) and (101) facets enhanced carriers separation. The Ti 3 C 2 substrate with excellent conductivity further promoted carriers transfer. As a result, Ti 3 C 2 /TiO 2 photocatalyst exhibited superior perfluorooctanoic acid (PFOA) removal performance (almost 100% removal efficiency and 49% defluorination efficiency within 16 h) compared with the traditional Ti 3 C 2 -HF/TiO 2 (22% removal efficiency and 12% defluorination efficiency within 16 h). This study provides a feasible strategy for enhancing photocatalytic degradation of PFOA by Ti 3 C 2 MXene-derived heterojunction photocatalyst.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Wen Xiao,Huan Yu,Chenghao Xu,Zhongyi Pu,Xiangyu Cheng,Fang Yu,Chao Liu,Qinfang Zhang,Zhigang Zou
Developing high-efficiency photocatalysts for tetracycline hydrochloride (TCH) degradation is of great significance to ecosystems and human beings. In this work, a two-step process of exfoliation and re-stacking was performed to prepare re-stacked HTiNbO 5 nanosheets (R-HTNS) and then coupled with Ti 3 C 2 MXene to construct Ti 3 C 2 MXene/R-HTNS (MX/RTS) with a 2D/2D Schottky heterojunction. These 2D/2D heterostructures between Ti 3 C 2 MXene and R-HTNS can produce an internal electric field and provide maximum interface area for efficient charge transfer across the intimate interface. The photocatalytic performance of samples was evaluated by TCH degradation under simulated sunlight. The MX/RTS composites, with an optimal sample of 3-MX/RTS, show enhanced photocatalytic activity for TCH degradation compared with R-HTNS. The characterization results reveal that the introduction of Ti 3 C 2 MXene can significantly increase specific surface area for providing more reactive sites and broaden the light absorption region. Besides, the incident light energy is absorbed by the Ti 3 C 2 MXene component in MX/RTS composites to generate photothermal energy (heat), which facilitates the charge carrier separation and surface reaction kinetics. Thus, the enhanced TCH photodegradation activity for MX/RTS composites is due to the introduction of Ti 3 C 2 MXene, which possesses the synergistic effect of the increased specific surface area, improved light-harvesting capacity, 2D/2D Schottky heterojunction, and photothermal energy effect. Additionally, the TCH photodegradation behavior is deliberated with a detailed discussion on various coexisting ions. During TCH photodegradation, the active radical species are determined for 3-MX/RTS. According to the characterization results, the possible TCH photodegradation pathway and mechanism over 3-MX/RTS are explored. This work may offer a novel insight for constructing MXene-based heterostructured photocatalysts with high efficiency.
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2023
·
IF 8.8
Hao Cheng,Liwen Zhang,Jun Feng,Tingfan Tang,Danfeng Qin
A novel, sensitive Ti 3 C 2 MXene/Co 3 O 4 /carbon nanofibers (Ti 3 C 2 MXene/Co 3 O 4 /CNFs) composite was synthesized via a HF exfoliating Ti 3 AlC 2 strategy, followed by doping Co 3 O 4 and Ti 3 C 2 MXene into the CNFs via a combination electrospinning and thermal annealing process. Ti 3 C 2 MXene/Co 3 O 4 /CNFs composite exhibits higher catalytic effect, conductivity, chemical stability, and electrochemical performance than Co 3 O 4 and Ti 3 C 2 MXene in electrochemical impedance, differential pulse stripping voltammetry, chronocoulometry, and cyclic voltammetry tests. This Ti 3 C 2 MXene/Co 3 O 4 /CNFs hybrid modified electrode provides fast analysis of 4-aminophenol (4-AP) with ultrahigh sensitivity, enhanced reproducibility and strong anti-interference capability. Furthermore, the level of 4-AP was quantified by this electrode with a wide linear range from 0.5 to 150 μM (R 2 > 0.99) and a low detection limit about 0.018 μM was achieved. Finally, the fabricated electrode was used for fast and sensitive analysis of 4-AP spiked in tap water and blood serum samples. This work presents the new Ti 3 C 2 MXene/Co 3 O 4 /CNFs electrode provides a platform for 4-AP monitoring and has the advantages of high selectivity , accuracy, simplicity, and rapid analysis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
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.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）