APPLIED THERMAL ENGINEERING
·
2025
·
IF 6.9
Hao Wang,Liu Yang,Xiaoke Li
Solar energy, recognized for its abundant and clean attributes, is a burgeoning renewable resource. Nanofluid photothermal conversion technology with volume absorption properties has been rapidly developed in recent years. This research optimized the performance of Ti 3 C 2 (MXene) nanofluid in solar photothermal conversion by integrating SiO 2 nanoparticles to form a composite nanofluid. The stability, thermal conductivity, and photothermal properties of the Ti 3 C 2 /SiO 2 nanofluids were comprehensively evaluated. The nanofluids demonstrated high stability, as evidenced by Zeta potentials all above 40 mV. Furthermore, the thermal conductivity of the nanofluids escalated with an increase in SiO 2 content. Specifically, the thermal conductivities of the composite nanofluids experienced an approximate 9 % enhancement when the temperature was elevated by 25 °C. The composite nanofluid had better light absorption because of SiO 2 nanoparticles’ forward scattering ability. The most efficient mixture (Ti 3 C 2 : 40 ppm and SiO 2 : 1000 ppm) reached a 67.35 % photothermal conversion efficiency, which is 5 % higher than the Ti 3 C 2 nanofluid alone at the same concentration. Rather than solely enhancing light absorption, this study provides a new pathway to improve the photothermal conversion efficiency of nanofluids by strengthening scattering. This contributes to enriching the theoretical and practical understanding of nanofluids in the field of photothermal conversion, offering scientific evidence and technical support.
研究领域:
材料科学
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太阳能技术
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Jing Liu,Ninglong Zhang,Jiansen Li,Mingyang Li,Guangxian Wang,Wenli Wang,Yuxia Fan,Shui Jiang,Gaole Chen,Yin Zhang,Xia Sun,Yuan Liu
The bioelectronic tongues based on taste receptors have been emerging with human-like taste perception. However, the practical applications of the receptor-based biosensors were restricted by their narrow and low dynamic ranges. Here, a novel immobilization strategy based on [email protected] /Ti 3 C 2 MXene was developed to immobilize the umami ligand binding domain (T1R1-VFT), to fabricate an umami biosensor for umami substances detection. Through the synergic effect of [email protected] and Ti 3 C 2 MXene, the capacity to load T1R1-VFT was effectively increased, and the response signal was also amplified by approximately 3 times. The proposed biosensor showed an ultrawide dynamic range of 10 −11 –10 −3 M, and a high upper limit of detection, which was closer to the human taste threshold and suitable for detecting foods rich in umami substances. Additionally, the biosensor was successfully applied to detect real samples and analyze the synergistic effects of binary umami substances.
研究领域:
生物化学
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生物传感器
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分析化学
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食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Fei Wang,Yao Zhu,Long Qian,Yuhao Yin,Ziyu Yuan,Yuting Dai,Tao Zhang,Dongya Yang,Fengxian Qiu
Precisely detecting organophosphorus pesticides (OPs) is paramount in upholding human safety and environmental preservation, especially in food safety. Herein, an electrochemical acetylcholinesterase (AChE) sensing platform entrapped in chitosan (Chit) on the glassy carbon electrodes (GCEs) decorated with Pt/MoS 2 /Ti 3 C 2 MXene (Pt/MoS 2 /TM) was constructed for the detection of chlorpyrifos . It is worth noting that Pt/MoS 2 /TM possesses good biocompatibility, remarkable electrical conductivity , environmental stability and large specific surface area . Besides, the heterostructure formed by the composite of TM and MoS 2 improves the conductivity and maintains the original structure, which is conducive to improving the electrochemical property . The coordination effect between the individual components enables the even distribution of functional components and enhances the electrochemical performance of the biosensor (AChE-Chit/Pt/MoS 2 /TM). Under optimal efficiency and sensitivity, the AChE-Chit/Pt/MoS 2 /TM/GCE sensing platform exerts comparable analytical performance and a wide concentration range of chlorpyrifos from 10 −12 to 10 −6 M as well as a low limit of detection (4.71 × 10 −13 M). Furthermore, the biosensor is utilized to detect OPs concerning three kinds of fruits and vegetables with good feasibility and recoveries (94.81% to 104.0%). This work would provide a new scheme to develop high-sensitivity sensors based on the two-dimensional nanosheet/laminar hybrid structure for practical applications in environmental monitoring and agricultural product detection.
研究领域:
环境科学
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食品科学
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生物传感技术
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产品关联
DOI
PubMed
高影响因子
ChemSusChem
·
2021
·Vol. 15
·期 3
·e202102352
·
IF 8.928
Gang Chen,Mingmei Ding,Kai Zhang,Zhen Shen,Yueting Wang,Jun Ma,Ao Wang,Yiping Li,Hang Xu
Graphical This is the way : Single-atomic Ru anchored on Ti 3 C 2 O substrate exhibits superior activity and selectivity toward electrocatalytic nitrogen reduction reaction (NRR) with an ammonia yield rate of 27.56 μg h −1 mg −1 and a faradaic efficiency of 23.3 %. Density functional theory calculations combined with physical characterization reveal that single Ru sites binding to four oxygen atoms are the main reaction centers that achieve a novel distal/alternating hybrid path, significantly promoting the NRR dynamics. Downsizing the catalyst to atom scale offers an effective way to maximize the atom utilization efficiency for electrocatalytic nitrogen reduction reaction (NRR). Herein, single-atomic ruthenium (Ru) anchored on a chemically activated Ti 3 C 2 with O-terminated groups (Ti 3 C 2 O) was designed to catalyze the NRR process. The catalyst achieved a superior activity and selectivity with ammonia yield rate of 27.56 μg h −1 mg −1 and faradaic efficiency of 23.3 % at a low potential of −0.20 V versus the reversible hydrogen electrode. According to the atomic resolution images from aberration-corrected scanning transmission electron microscopy, Ru sites on Ti 3 C 2 O achieved good dispersion on atomic scale. X-ray photoelectron spectroscopy analysis further demonstrated that the O-termination groups were successfully activated. Density functional theory calculations combined with experiments revealed that single Ru sites binding to four oxygen were the main reaction centers that permitted the hydrogenation of *NNH 2 to *NHNH 2 in a novel distal/alternating hybrid path while reducing the energy barrier of the potential-limiting step to 0.78 eV from 0.96 eV in the distal path alone or 1.18 eV in the alternating path alone, thereby significantly promoting the NRR dynamics.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Beibei Zhu,Jun Shi,Chongchong Liu,Jingguo Li,Shaokui Cao
As a novel two-dimensional material, Ti 3 C 2 MXenes has attracted lots of attention in biomedical filed for its large surface area and excellent near-infrared (NIR) responsiveness. In this paper, an in-situ growth and self-assembly approach was employed to combine gold nanorods (GNRs) with Ti 3 C 2 nanosheets to prepare intelligent sandwich-like Ti 3 C 2 @GNRs/PDA/Ti 3 C 2 nanohybrids . Compared with Ti 3 C 2 nanosheets, in-situ growth Ti 3 C 2 @GNRs possessed excellent photothermal conversion efficiency (45.89%), caused by the distinguished photothermal synergy between GNRs and Ti 3 C 2 nanosheets. Moreover, the high specific surface area of Ti 3 C 2 MXene and outstanding adhesion performance of PDA endowed Ti 3 C 2 @GNRs/PDA/Ti 3 C 2 nanohybrids with superior drug loading ability for doxorubicin hydrochloride (DOX) (95.88%). Besides, Ti 3 C 2 @GNRs/PDA/Ti 3 C 2 nanohybrids displayed distinct pH/NIR responsive drug release properties upon NIR irradiation owing to the strong π-π stacking interaction between Ti 3 C 2 @GNRs/PDA/Ti 3 C 2 and DOX, along with the excellent NIR-responsiveness of Ti 3 C 2 @GNRs/PDA/Ti 3 C 2 . This paper offers a practicable method to prepare Ti 3 C 2 MXene-based nanoplatform with synergistically enhanced NIR drug release behavior, brilliant biocompatibility and high drug loading efficiency, which is expected to be applied in remote cancer therapy.
研究领域:
生物医学工程
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纳米技术
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药学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
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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.
研究领域:
材料科学
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分析化学
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电化学
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环境科学
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生物传感器
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Po Jin,Enze Zhou,Liangliang Cheng,Wanlu Zheng,Yong Zhao,Shuang Zhai,Ya-nan Zhang
Riboflavin is a common marker of microbial corrosion and can act as an electron shuttle in the solvated state to enhance electron transfer efficiency. In this paper, an in-situ label-free fiber-optic biosensor modified by Ti 3 C 2 -MXene@Square Gold nanoparticles (SGNps) composites and riboflavin kinase is developed, which behaved with high sensitivity for measuring riboflavin. The sensing interface of the sensor is constructed by stepwise assembly of SGNps and riboflavin kinase using Ti 3 C 2 -MXene nanosheets as the supporting substrate. Riboflavin kinase catalyzed the phosphorylation of riboflavin to form flavin mononucleotides in the presence of adenine nucleoside triphosphate and Mg 2+ . Experimental results showed that the sensitivity of riboflavin measurement is 5.61 nm µ m −1 and the limit of detection (LOD) is 115 nmol L −1 (n m ) in the concentration range of 0–2.656 µ m . In situ label-free monitoring of riboflavin in Shewanella , the sensitivity of the sensor in bacterial fragmentation fluid is 53.90 nm/OD within the optical density (OD) of 0–0.175, and the LOD is OD = 0.017. The above results verified the feasibility of the sensor for in situ monitoring of riboflavin in microbial corrosive environments, with ultra-low detection limit and good selectivity, which undoubtedly provided great research value for the application of optical fiber sensors in microbial corrosion monitoring.
研究领域:
生物传感技术
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微生物学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2024
·
IF 9.7
Haitao Xu,Ye Chen,Qing Wen,Cunguo Lin,Haiping Gao,Zhenghui Qiu,Liuqingying Yang,Xu Pan
Microbial fuel cells have been proposed as one of the sustainable and potential technologies for treating contaminants and synchronously producing green energy. However, the poor performance of the anode is a major obstacle in the practical application of MFCs. To address this challenge, the rational design of anode materials with enhanced biocatalytic and biocompatible properties has been considered as an effective approach to improve extracellular electron transfer (EET) processes and general MFC performance . Herein, in light of the interaction between the transition metal and exoelectrogens, nickel-cobalt sulfide/Ti 3 C 2 Mxene (NiCo 2 S 4 /Mxene) is prepared by electrostatic assembly, which combined positively charged sea-urchin-like NiCo 2 S 4 with negatively charged Mxene. This not only prevents the stacking of NiCo 2 S 4 and Mxene but also accelerates the EET process by harnessing their biocompatibility and biocatalyst. As expected, the MFC with NiCo 2 S 4 /Mxene harvested higher electricity energy (9.66 ± 0.28 W/m 3 ), significantly exceeded those of plain carbon felt (CF, 1.68 ± 0.13 W/m 3 ), Mxene (4.32 ± 0.20 W/m 3 ) and NiCo 2 S 4 (5.41 ± 0.22 W/m 3 ). Moreover, the microbial community analysis further revealed that the sulfide composite attracts a higher percentage of sulfur-cycling exoelectrogens (Desulfuromonas (24.25%) and Marinobacterium (15.75%)), motivating associated metabolic pathways with more efficient electricity generation processes. Such commendable performances are mainly attributed to the synergistic effect between NiCo 2 S 4 and Mxene, which confers the bioanode with good biocompatibility and biocatalyst for biofilm adhesion and colonization, as well as providing abundant transition metals and sulfide active sites for the EET process. Our finding provides a facile routine for developing sulfide with appropriate modification as anode material for favorable performance of MFC, providing insights for sustainable and cleaner energy production in the future.
研究领域:
环境科学
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生物技术
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2020
·
IF 3.807
Xiao Yang,Minghui Feng,Jianfei Xia,Feifei Zhang,Zonghua Wang
A novel electrochemical biosensor based on AuNPs/Ti 3 C 2 MXene three-dimensional nanocomposite for sensitive miRNA-155 detection by exonuclease III (Exo III)-aided cascade target recycling is reported. Ti 3 C 2 MXene is synthesized and used as a support to immobilize Au nanoparticles (AuNPs) due to its special layered structure and metallic properties. The three-dimensional (3D) structure of the AuNPs/Ti 3 C 2 MXene nanocomposite for the biosensor platform leverages the integrated advantages of a large specific surface area, excellent electrical conductivity and electrocatalytic properties . AuNPs are used to immobilize capture DNA (C-DNA) by Au S chemical bonds. The C-DNA was modified with methylene blue (MB) at the 3′ end, resulting in an initial DPV electrochemical signal ( I d ). In the presence of target, miRNA-155 and C-DNA formed a double-stranded structure by complementary base pairing. Subsequently, Exo III digested the 3′ end of the C-DNA in the double-stranded structure and caused the electrochemical signal to “turn off” (the final signal denoted as I h ). By Exo III-aided cascade cleavage of the target, one miRNA-155 chain causes the release of several C-DNAs under certain conditions, which significantly amplifies the peak current difference on the fabricated biosensor (Δ I = I d ﹣ I h ). The electrochemical sensor achieved a detection limit of 0.35 fM (S/N = 3) with a linear range from 1.0 fM to 10 nM. This sensor also shows desirable stability, reproducibility and specificity.
研究领域:
分析化学
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生物化学
·
纳米技术
·
分子生物学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2023
·
IF 6.2
Hongyuan Cui,Lin Yang,Xueqi Fu,Guodong Li,Shu Xing,Xiao-Feng Wang
The simultaneous detection of multiple diabetes markers is important for the diagnosis and typing of diabetes because of the complex causes of diabetes. Two-dimensional titanium carbide (MXene), an emerging material, has great potential for biomedical sensing, in addition to its electrical applications. In this study, a fluorescence resonance energy transfer (FRET) aptasensor with high sensitivity and specificity was constructed using monolayer Ti 3 C 2 MXene for the simultaneous detection of insulin and visceral adipose tissue-derived serotonin (vaspin). Fluorescein-labeled insulin binding aptamers (IBAs) and Cy7-labeled vaspin-binding aptamers (VBAs) were attached to Ti 3 C 2 , and their fluorescence was effectively quenched by FRET between the fluorescein and Ti 3 C 2 . Insulin and vaspin were preferentially bound to IBA and VBA for a higher affinity. This process led to the subsequent shedding of fluorescein from Ti 3 C 2 , resulting in fluorescence recovery. The high fluorescence quenching efficiency and broad wavelength absorption of Ti 3 C 2 MXene enabled the quenching of two different, wide spectrum fluorescence at two different wavelengths, thus enabling the simultaneous detection of both insulin and vaspin. The aptasensor was highly sensitive, with a low detection limit of 36 pM for insulin and 45 pM for vaspin. Importantly, this Ti 3 C 2 -based aptasensor can precisely detect insulin and vaspin in human serum and diagnose a specific type of diabetes and identify its cause to facilitate subsequent treatment. The above results indicate that the Ti 3 C 2 -based aptasensor has promising applications in the clinical diagnosis and typing of diabetes mellitus.
研究领域:
生物医学工程
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分析化学
·
糖尿病研究
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Jialin Pan,Meiling Zhang,Gege Fu,Li Zhang,Huimei Yu,Xu Yan,Fangmeng Liu,Peng Sun,Xiaoteng Jia,Xiaomin Liu,Geyu Lu
Although the advent of two-dimensional (2D) MXenes has substantially increased the family of 2D materials and diverse applications, the rational design of MXene-based composites and their specialized applications in theranostic biomedicine remain a challenge. In this work, we developed, for the first time, Ti3C2 MXene nanosheets for near-infrared (NIR)-IIb (1530 nm) and magnetic resonance (MR) imaging-guided photothermal therapy. Surface engineering and functionalization of 2D Ti3C2 MXene nanosheets with NaErF4:0.5%Tm@NaLuF4 (NaErF4) nanoparticles result in NaErF4@Ti3C2 composites that emit in the NIR-IIb region at 1530 nm under 808 nm excitation, conferring NIR-IIb imaging guidance and monitoring capabilities during tumor hyperthermia. Due to the inherent magnetic properties of the Er3+ ions, the NaErF4@Ti3C2 composite can also be used for efficient T2-weighted MR imaging. In particular, based on the high photothermal conversion capability (43.62% at 808 nm irradiation) and photothermal stability, the designed composites were further explored for efficient tumor ablation with an inhibition ratio of 92.9%, which was systematically demonstrated both in vitro and in vivo. No significant nanocomposite toxicity was observed at the injected dose. This work not only expands the performance of MXene-based multifunctional nanostructures but also highlights the promise of their versatile applications in cancer therapy.
研究领域:
材料科学
·
生物医学工程
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纳米医学
·
癌症治疗
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2022
·
IF 6.959
Lan Ding,Senwei Zeng,Weiye Zhang,Chao Guo,Xinyi Chen,Bo Peng,Zhongpeng Lv,Hongjun Zhou,Quan Xu
Solar-driven photocatalytic hydrogen production is considered an effective strategy to mitigate the current energy and environmental challenges. Herein, a function heterostructure photocatalyst of 1D CdS nanorod rationally supported nitrogen-doped Ti3C2 MXene quantum dots (N-MQDs) is successfully constructed via the self-assembly strategy. Impressively, N-MQDs/CdS exhibits superior photocatalytic hydrogen production performance with an efficiency rate of 17094 μmol g–1 h–1, which is 14.79 times higher than pure CdS. The strong oxidizing performance of N-MQDs/CdS also presents an efficient activity for the photodegradation of phenol. The significant enhancement in performance is mainly due to the synergistic effect of the tight interfacial contact and matched energy levels between the highly conductive Ti3C2 MXene quantum dots and 1D CdS nanorod, which greatly accelerates the separation and transfer of photogenerated carriers. Regulating the energy band structure of photocatalysts via multifunctional MXene materials could hopefully motivate further interest in the reasonable design of MXene-semiconductor photocatalytic materials in energy and environmental applications.
研究领域:
材料科学
·
化学
·
环境科学
·
能源科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）