Journal of Physical Chemistry C
·
2022
·
IF 4.177
Ziqi Li,Qi Kang,Luhua Lu,Wenbo Li,Yuliang Li,Wei Chen
Electrically controlling the emissivity provides a dynamic, precise, and low-energy-consuming solution for thermal radiation manipulation. The adjustable bandgap, abundant pores, physical stability, and electrochemical activity mean that graphdiyne (GDY) has great potential in electrically emissivity regulation. In this study, a GDY nanowall was successfully synthesized through a cross-coupling reaction with a controlled monomer concentration. Besides the morphology and microstructure characterizations, the intrinsic integrated emissivity in the wavelength of 2–20 μm was determined to be 0.66. Afterward, GDY composited with graphene was utilized as the electrode to fabricate an electrochemical device and emissivity modulator, with 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide serving as the electrolyte. Interestingly, the GDY-based modulator demonstrated a unique capacity to modulate emissivity under a negative voltage, unlike pure graphene and other materials that can only regulate emissivity under a positive voltage. To explore the dynamic control mechanism of GDY, an in situ Raman characterization was performed, which revealed a considerable redshift and decrease in the intensity of the characteristic alkyne peaks. We proposed that the novel emissivity tuneability of GDY is caused by the cation-induced changes in the alkyne bond. Alkyne bonds transform into alkene bonds by coordinating with 1-ethyl-3-methylimidazolium cations in the presence of an electrical field, resulting in an energy level change and a change in the optical properties of GDY. These discoveries may open the way for the application of GDY in thermal radiation control and the study of molecular-scale active materials in electro-optical modulation.
研究领域:
材料科学
·
物理化学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 56
·35408-35414
·
IF 3.361
Jianhui Zhu,Desheng Liu,Changsheng Li,Bingjie Zhang,Jianli Wang,Wenjuan Wu,Jiawen Ji,Yongqiang Ma
Organic pollutants widely exist in the environment, causing a lot of potential harm. On account of excellent physical and chemical properties, graphdiyne (GDY) has been widely used in many potential fields. However, it is crucial to develop more synthetic methods to achieve mass production of GDY and explore its universality in the removal of organic pollutants. Herein, six transition metal salts including Cu salts and Pd salts were selected as catalysts to successfully synthesize GDY with different morphologies by a coupling reaction. The method is simple, safe, easy to operate and suitable for large-scale production. Among them, CuSO4-catalyzed GDY has higher yield (>90%), lower density and fewer defects. Furthermore, it can efficiently remove organic pollutants from water such as dyes, tetracycline antibiotics and neonicotinoid pesticides, demonstrating that the adsorption material has a certain universality. In particular, the adsorption effect of GDY on dye is comparable to that of MWCNTs and stronger than that of conventional adsorbents such as graphene and activated carbon. This work provides more possibilities for the industrial production of GDY and its promising application for the removal of organic pollutants.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2023
·
IF 12.6
Shiyu Liu,Jinyue Shi,Yu Lin,Hu Luo,Yeyu Wu,Jun Yan,Xuecai Tan,Ke-Jing Huang
Thalassemia is a globally prevalent single-gene blood disorder, with nearly 7% of the world's population being carriers. Therefore, the development of specific and sensitive methods for thalassemia detection holds significant importance. Herein, a sandwich-type electrochemical/colorimetric dual-mode biosensor is developed based on gold nanoparticles (AuNPs)/graphdiyne (GDY) and DNA nanoframeworks for ultra-sensitive detection of CD142 gene associated with sickle cell anemia. Utilizing AuNPs/GDY as the substrate electrode, the fabricated sandwiched DNA nanoframework not only improves selectivity but also introduces numerous signal probes to further amplify the output signal. In the electrochemical mode, glucose oxidase catalyzes the oxidation of glucose, generating electrons that are transferred to the biocathode for a reduction reaction, resulting in an electric signal proportional to the target concentration. In the colorimetric mode, glucose oxidase catalyzes the generation of H 2 O 2 from glucose, and with the aid of horseradish peroxidase , H 2 O 2 oxidizes 3,3′,5,5′-tetramethylbenzidine to produce a colored product, enabling colorimetric detection of the target. The dual-mode biosensor demonstrates a detection range of 0.0001–100 pM in the electrochemical mode and a detection range of 0.0001–10,000 pM in the colorimetric mode. The detection limit in the electrochemical mode is determined to be 30.4 aM ( S/N=3 ), while in the colorimetric mode is of 35.6 aM ( S/N=3 ). This dual-mode detection achieves ultra-sensitive detection of CD142, demonstrating broad prospects for application.
研究领域:
生物传感技术
·
医学遗传学
·
纳米生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2023
·
IF 8.4
Hao Wang,Xinyu Xu,Xiaohan Mei,Dapeng Zeng,Boda Ying,Zehao Yu,Shibo Liu,Ruiyan Li,Yanguo Qin
Bone implants that promote osseointegration and have antimicrobial capabilities are necessary to ensure optimal long-term functionality of implants. In this study, a porous composite osteogenic scaffold was prepared using a twin-screw extruder and a fused deposition modeling three-dimensional (3D) printer. A polydopamine (PDA) coating was used to load graphdiyne oxide (GDYO) on the surface of the 3D printed polyetherimide-tricalcium phosphate (PEI-TCP) osteogenic scaffold through π–π double-bond interactions. The resulting P-T-GDYO composite scaffold was characterized, and its mechanical properties, ability to promote osteogenic differentiation, and light-responsive antibacterial activity were evaluated. When the scaffold was doped with 10 wt% β-TCP, its mechanical properties remained in the range of those of cancellous bone. In terms of osteogenic differentiation, the P-T-GDYO composite scaffold promoted adhesion and osteogenic differentiation of MC3T3-E1 cells, as well as effectively promoting endogenous bone regeneration of rabbit femoral condyle bone defects in osteogenesis experiments in vivo . In a mouse subcutaneous infection model, after near-infrared light irradiation, P-T-GDYO showed an antibacterial rate of 90.18 % against Staphylococcus aureus , while maintaining good tissue–organ compatibility. This study represents an important development in GDYO-based photothermal antibacterial materials in the field of orthopedics and expands its application in the biomedical field.
研究领域:
生物材料学
·
骨科医学
·
组织工程学
✓ 已验证
产品关联
DOI
高影响因子
Carbon Energy
·
2023
·Vol. 5
·期 11
·e343
·
IF 20.5
Xin Liu,Kun Wang,Ying Liu,Fuhua Zhao,Jianjiang He,Hao Wu,Jianfei Wu,Han-Pu Liang,Changshui Huang
The inherent shortcomings of a zinc anode in aqueous zinc-ion batteries (ZIBs) such as zinc dendrites and side reactions severely limit their practical application. Herein, to address these issues, an ion-oriented transport channel constructed by graphdiyne (GDY) nanowalls is designed and grown in situ on the surface of a zinc electrode. The vertically stacked GDY nanowalls with a unique hierarchical porous structure and mechanical properties form a nanomesh-like interface on the zinc electrode, acting as an ion-oriented channel, which can efficiently confine the segmented growth of zinc metal in microscopic regions of hundreds of nanometers. In those microscopic regions, the uniform domain current density is effortlessly maintained compared with a large surface area, thereby inhibiting zinc dendrites effectively. Besides, due to the presence of the ion-oriented channel, the modified zinc anode demonstrates long-term stable zinc plating/stripping performance for more than 600 h at 1 mAh cm −2 in an aqueous electrolyte. In addition, full-cells coupled with MnO 2 show high specific capacity and power density, as well as excellent cycling stability with a capacity retention of 82% after 5000 cycles at 1 A g −1 . This work provides a feasible and accessible surface engineering approach to modify the electrode interface for confined and dendrite-free zinc deposition in aqueous ZIBs.
研究领域:
材料科学
·
电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2024
·
IF 8.2
Yifei Xue,Fei Wu,Xudong Zhao,Wenliang Ji,Lijuan Hou,Ping Yu,Lanqun Mao
Real-time tracking of respiratory patterns provides noninvasive and quick access for evaluating pathophysiological conditions yet remains challenging due to limited temporal resolution and poor sensitivity to dig out fingerprints of respiratory waveforms. Here, we report an electrochemical sensor for accurately tracing respiratory patterns of small animal models based on the electrochemical impedance mechanism for wireless coupling of a graphdiyne oxide (GYDO)-modified sensing coil chip and a reader coil chip via near-field magnetic induction. In the electrochemical impedance measurement mode, an alternating current is applied through the reader coil chip to perturb proton transport at the GYDO interface of the sensing coil chip. As demonstrated, a high-frequency perturbing condition significantly reduces the interfacial resistance for proton transport by 5 orders of magnitude under 95% relative humidity (RH) and improves the low-humidity responses with a limit of detection down to 0.2% RH, enabling in vivo accurate profiling of respiratory patterns on epileptic rats. The electrochemical impedance coupling system holds great potential for new wireless bioelectronics.
研究领域:
生物医学工程
·
传感技术
·
动物模型研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-20
·
IF 36.3
Jiang Chao,Wang Kaihang,Zhang Luwei,Zhang Chunfang,Wang Ning
Low ionic conductivity is a major obstacle for polymer solid-state electrolytes. In response to this issue, a design concept of enhanced regional electric potential difference (EREPD) is proposed to modulate the interaction of nanofillers with other components in the composite polymer solid-state electrolytes (CPSEs). While ensuring the periodic structure of the graphdiyne (GDY) backbone, methoxy-substituted GDY (OGDY) is prepared by an asymmetric substitution strategy, which increases the electric potential differences within each repeating unit of GDY. The staggered distributed electron-rich regions and electron-deficient regions on the two-dimensional plane of OGDY increase the free Li + concentration through Lewis acid–base pair interaction. The adjacent ERRs and EDRs form uniformly distributed EREPDs, creating a continuous potential gradient that synergistically facilitates the efficient migration of Li + . Impressively, the OGDY/poly(ethylene oxide) (PEO) exhibits a high ionic conductivity (1.1 × 10 –3 S cm −1 ) and ion mobility number (0.71). In addition, the accelerated Li + migration promotes the formation of uniform and dense SEI layers and inhibits the growth of lithium dendrites. As a proof of concept, Li||Li symmetric cell and Li||LiFePO 4 full cell and pouch cell assembled with OGDY/PEO exhibit good performance, highlighting the effectiveness of our EREPD design strategy for improving CPSEs performance.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 7
·2821-2827
·
IF 8.067
Na Liang,Xueyan Wu,Yan Lv,Jixi Guo,Xiuli Zhang,Yingfu Zhu,Huibiao Liu,Dianzeng Jia
Active electrolyte enhanced supercapacitors (AEESCs) are considered as promising tools for enhancing power capacity due to their high specific capacitance and simple construction. However, there are many challenges, such as severe self-discharge (SDC) and rapid capacity decay. Herein, we develop a novel strategy to fabricate AEESCs with the suppression of rapid SDC, in which a self-assembled composite membrane of graphdiyne oxide/polyvinyl alcohol (GDYO/PVA) is used as a separator. The new AEESCs show a SDC time of 37160 s (1.0 V–0.3 V), which is 153 times higher than that of commercial separators, as well as an excellent capacitance retention of 95.1% after 8000 cycles. The outstanding electrochemical performance of the GDYO/PVA composite membrane can be attributed to the inherent nano-network structure, excellent proton conductivity, and high selectivity of GDYO. This new strategy of a self-assembled composite membrane based on GDYO will provide new opportunities for constructing AEESCs with super long self-discharge time and high performance.
研究领域:
材料科学
·
能源存储
✓ 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）