Nanoscale
·
2021
·Vol. 13
·期 6
·3817-3826
·
IF 7.79
Suzhen Kong,Dong Cai,Guifa Li,Xiangju Xu,Suya Zhou,Xinwei Ding,Yongqin Zhang,Shuo Yang,Xuemei Zhou,Huagui Nie,Shaoming Huang,Ping Peng,Zhi Yang
To overcome the shuttle effect in lithium–sulfur (Li–S) batteries, an sp/sp2 hybridized all-carbon interlayer by coating graphene (Gra) and hydrogen-substituted graphdiyne (HsGDY) with a specific surface area as high as 2184 m2 g−1 on a cathode is designed and prepared. The two-dimensional network and rich pore structure of HsGDY can enable the fast physical adsorption of lithium polysulfides (LiPSs). In situ Raman spectroscopy and ex situ X-ray photoelectron spectroscopy (XPS) combined with density functional theory (DFT) computations confirm that the acetylenic bonds in HsGDY can trap the Li+ of LiPSs owing to the strong adsorption of Li+ by acetylenic active sites. The strong physical adsorption and chemical anchoring of LiPSs by the HsGDY materials promote the conversion reaction of LiPSs to further mitigate the shuttling problem. As a result, Li–S batteries integrated with the all-carbon interlayers exhibit excellent cycling stability during long-term cycling with an attenuation rate of 0.089% per cycle at 1 C over 500 cycles.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
Nature Communications
·
2020
·Vol. 11
·期 1
·1-12
·
IF 12.121
Wang Rui,Shi Miusi,Xu Feiyan,Qiu Yun,Zhang Peng,Shen Kailun,Zhao Qin,Yu Jiaguo,Zhang Yufeng
Titanium implants have been widely used in bone tissue engineering for decades. However, orthopedic implant-associated infections increase the risk of implant failure and even lead to amputation in severe cases. Although TiO 2 has photocatalytic activity to produce reactive oxygen species (ROS), the recombination of generated electrons and holes limits its antibacterial ability. Here, we describe a graphdiyne (GDY) composite TiO 2 nanofiber that combats implant infections through enhanced photocatalysis and prolonged antibacterial ability. In addition, GDY-modified TiO 2 nanofibers exert superior biocompatibility and osteoinductive abilities for cell adhesion and differentiation, thus contributing to the bone tissue regeneration process in drug-resistant bacteria-induced implant infection.
研究领域:
材料科学
·
生物医学工程
·
组织工程
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Ying Li,Huan Huang,Rongli Cui,Dongmei Wang,Zi Yin,Dan Wang,Lirong Zheng,Jing Zhang,Yidong Zhao,Hui Yuan,Jinquan Dong,Xihong Guo,Baoyun Sun
In this work, graphdiyne, a new kind of carbon allotrope composed of sp and sp 2 hybridized carbon atoms, firstly worked as an effective electrochemical sensor for the determination of low concentration of Cd 2+ and Pb 2+ in water using electrochemical pre-enrichment and anodic-stripping voltammetry methods. The limit of detection was 0.46 nM for Cd 2+ and 1.72 nM for Pb 2+ with a linear range extended from 0.01 μM to 1 μM. This graphdiyne modified electrode also presented excellent selectivity, stability, applicability and reproducibility, providing a simple and promising platform to develop novel electrochemical sensor for detecting Pb 2+ and Cd 2+ with higher performance. Through X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared (FTIR) and X-ray absorption near edge structure (XANES) characterization, it was verified that the acetylenic links in graphdiyne served as adsorbent sites by providing electrons to bind with heavy metal ions, which enhanced the electrochemical sensing performance.
研究领域:
分析化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
BIOMATERIALS
·
2020
·
IF 10.317
Jiani Xie,Chengyan Wang,Ning Wang,Shuang Zhu,Linqiang Mei,Xiao Zhang,Yuan Yong,Lele Li,Chunying Chen,Changshui Huang,Zhanjun Gu,Yuliang Li,Yuliang Zhao
X-ray irradiation-induced toxicity to gastrointestinal tract become a significant clinical problem when using radiotherapy for treating abdominal tumors neighbored to gastrointestinal tissue, which not only often prevents these tumors from receiving a definitive therapeutic dose but also causes a series of gastrointestinal diseases, such as anorexia, abdominal pain, diarrhea and hematochezia. And thus it seriously reduces the therapeutic outcome and life quality of patients. Therefore, the development of gastrointestinal radioprotectors is essential. However, the commercial gastrointestinal radioprotectors in clinical are still rare. In view of this, we prepared bovine serum albumin (BSA) modified graphdiyne (GDY) nanoparticles (GDY-BSA NPs) and for the first time studied its gastrointestinal radioprotection ability. The unique advantages of GDY nanomaterial , including high free radical scavenging ability, good chemical stability in gastric acid condition, relatively longer residence time in gastrointestinal tract and good biosafety under oral administration, provide the favorable prerequisites for it to be used as the gastrointestinal radioprotector. In vitro experimental results indicated that the GDY-BSA NPs powerfully reduced DNA damage and improved viability of the irradiated gastrointestinal cells. In vivo results showed that the GDY-BSA NPs significantly decrease radiation-induced diarrhea, weight loss, and gastrointestinal tissue pathological damage of mice. Furthermore, we also deeply studied the gastrointestinal radioprotective mechanism of GDY-BSA NPs, which indicated that the GDY-BSA NPs effectively inhibited reactive oxygen species (ROS)-induced apoptosis signal pathway, and thus reduced gastrointestinal cell apoptosis. Our work for the first time employed BSA-GDY NPs to mitigating radiation-induced gastrointestinal tract damage, which not only promotes the exploration of new gastrointestinal tract radioprotectors, but also is the good guidance for the treatment of gastrointestinal diseases by nano-drug.
研究领域:
纳米技术
·
放射生物学
·
药学
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医学研究
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产品关联
DOI
PubMed
高影响因子
Chemosensors
·
2022
·Vol. 10
·期 11
·485
·
IF 4.229
Yu Zhang,Zhi Xia,Guofeng Gui,Ping Zhang,Qianzhu Li,Lifen Meng
This work constructed an ultrasensitive electrochemical bisphenol AF (BPAF) sensor using ultra-stable graphdiyne-templated platinum nanoparticles (PtNPs@GDY) as a sensing platform. PtNPs@GDY nanocomposite was synthesized by a chemical reduction method, and the preparation process was simple and rapid. GDY, with its natural porous structure, was used as substrate to stabilize PtNPs. Due to the high adsorption ability of GDY, it can prevent PtNPs from aggregation and inactivation. Transmission electron microscopy (TEM), high-resolution TEM (HRTEM) and Energy-dispersive X-ray spectroscopy (EDS) were used to characterize the microstructure and morphologies of the materials. Cyclic voltammetry (CV), Electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV) were employed to investigate the electrochemical properties of the material and the performance of the sensor. At an optimized condition, the sensor exhibited excellent catalytic activities towards BPAF. The linear ranges were from 0.4 to 15.4 μM and 35.4 to 775.4 μM. The limit of detection was 0.09 μM. In addition, the electrochemical sensor showed good reproducibility, stability and anti-interference.Keywords:graphdiyne;platinum nanoparticles;electrochemical determination;bisphenol AF
研究领域:
材料科学
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环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Shengyuan Yao,Yan Lv,Qing Wang,Jinhui Yang,Hongmei Li,Ningning Gao,Furu Zhong,Jihong Fu,Jun Tang,Tao Wang,Dianzeng Jia
As a new kind of 2D carbon allotrope, graphdiyne (GDY) has the characteristics of uniform pores and large specific surface area due to its unique electronic space arrangement structure. Therefore, we fabricated a novel gold nanoparticles (Au NPs)/GDY/carbon cloth (CC) SERS substrate by a simple electrodeposition process using GDY nanowall wrapping the CC as support. The effects of electrodeposition conditions on the microstructure and SERS activity of Au NPs/GDY/CC substrate were studied. Under the condition of optimizing deposition time and deposition voltage, the prepared Au NPs/GDY/CC substrate can detect 10 -13 M with rhodamine 6G (R6G) as a probe molecule. The maximum enhancement factor (EF) is 2.2 × 10 12 , and the concentration of R6G is logarithmically correlated with the intensity of the SERS band with a linear correlation coefficient (R 2 ) of 0.97036. These indicate that the Au NPs/GDY/CC substrate has good sensitivity. The prepared Au NPs/GDY/CC SERS substrate was applied to the detection of organic dyes of malachite green (MG) and methyl violet (MV) in water, and the detection limits of both can reach 10 -9 M. This highly sensitive and high-performance SERS substrate has broad application prospects in the detection of organic dyes.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Shiguan Xu,Lijun Yan,Hui Cheng,Hui Xie,Lina Zeng,Lin Li,Shuhai He,Wei Sun
In this paper an electrochemical sensor was fabricated by dropping a graphdiyne (GDY) and hemin suspension solution on the surface of carbon ionic liquid electrode (CILE) followed by casting the Nafion film (Nafion/hemin-GDY/CILE). The morphology of GDY was observed by scanning electron microscopy with the biomolecular structure of hemin-GDY and hemin characterized by UV-Vis absorption spectrophotometry, which proved that hemin maintained the original structure after mixing with GDY. Direct electrochemistry of hemin on the GDY modified electrode was realized with a pair of well-defined redox peaks and electrochemical performances were checked in detail with the electrochemical parameters calculated. Nafion/hemin-GDY/CILE showed excellent electrocatalytic ability towards the reduction of bromate with the detection range from 5.00 to 50.0 mmol L -1 and the detection limit of 3.3 mmol L -1 (3 σ ). In addition, the modified electrode possessed good reproducibility and stability, which was applied to the analysis of seawater samples.
研究领域:
分析化学
·
电化学传感器
✓ 已验证
DOI
高影响因子
ELECTROANALYSIS
·
2020
·Vol. 33
·期 3
·652-662
·
IF 2.544
Hao Wang,Jing Xiao,Chunxiang Li,Xiaofang Li,Keqin Deng
Graphdiyne (GDY) was a novel flat material with sp and sp 2 hybridized carbon atoms. It exhibited good biocompatibility. The application of GDY in PEC immunosensor was very limited. Thus, a novel photoelectrochemical sensor for the sensitive detection of prostate specific antigen (PSA) was proposed by using GDY oxide (GDYO) conjugated with horseradish peroxidase (HRP) and secondary antibody for photocurrent signal inhibition. GDYO was prepared by oxidation of honeycomb-like nanotubes composed of numerous GDY nanosheets. It showed high loading capacity for HRP and the catalytic activity of HRP could be remained. With reduced graphene oxide-CdS (rGO-CdS) as photoelectrochemical sensing platform, a sandwich-type photoelectrochemical (PEC) immunosensor was thus fabricated. The immunosensor presented a wide linear concentration range of 10 fg mL −1 –20.0 ng mL −1 with a detection limit (LOD) of 3.5 fg mL −1 . Moreover, the PEC immunosensor displayed ideal reproducibility, stability, and selectivity, which was a promising platform for the detection of other important tumor targets.
研究领域:
生物医学工程
·
分析化学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Jiaming Liu,Xiaomei Shen,Didar Baimanov,Liming Wang,Yating Xiao,Huibiao Liu,Yuliang Li,Xingfa Gao,Yuliang Zhao,Chunying Chen
Graphdiyne (GDY) is a novel two-dimensional (2D) carbon allotrope with sp-hybridized carbon atoms and hexagonal rings. Because of its unique structure and electronic property, GDY was reported as a promising candidate applied in energy storage, catalysis, biosensing and so on. However, using GDY as a platform to immobilize metal ion or enzyme was still not reported. Here, we presented a GDY-based composite with dual-enzyme activity by immobilizing ferrous ion and glucose oxidase onto GDY sheet. GDY showed great adsorption capacity and maintained the high catalytic activity of ferrous ion. The ferrous ion preferred to adsorb in between the neighboring two C–C triple bonds of GDY with lower adsorption energy (−5.64 eV) if compared to graphene (−1.69 eV). Meanwhile, GDY exhibited the ability of adsorbing glucose oxidase while did not obviously influence the structure and catalytic activity of the enzyme. The as-prepared composite was successfully used in one-step blood glucose detection. This work provides a new insight on ion and enzyme immobilization by 2D material.
研究领域:
材料科学
·
生物化学
·
医学诊断
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2026
·
IF 5.3
Fan Shi,Tao Liu,Wei Zhao,Brij Mohan,Qing Liu,Xiaojiao Li,Lijun Yan,Wei Sun
Scopoletin, a bioactive compound with important physiological and pharmacological effects, lacks a simple and rapid method for real-world detection. In this paper, graphdiyne quantum dots (GDYQDs) were prepared via a one-step ultrasonication method and subsequently combined with N-doped graphene (NGR). The GDYQDs/NGR composite was drop-coated onto a screen-printed electrode (SPE) to fabricate GDYQDs/NGR-modified SPEs, integrated with a portable electrochemical workstation and Bluetooth-enabled smartphone for real-time, wireless detection of scopoletin. Beyond experimental performance, density functional theory (DFT) calculations and partial density of states (PDOS) analyses were conducted for three model substrates (I: GDYQDs, II: NGR, III: GDYQDs/NGR) and three adsorption configurations (1: O–H adsorption, 2: carbonyl O toward substrate, 3: parallel π-adsorption). Adsorption energies indicate the π-adsorption configuration as the most stable across all substrates. PDOS analysis shows a pronounced downshift of the molecular p-state upon adsorption, most notably on the GDYQDs/NGR substrate, indicating stronger electronic coupling and stabilization of adsorption complexes. Collectively, these results demonstrate a cooperative GDYQDs–NGR effect that enhances scopoletin adsorption via π–π interactions and electronic coupling, providing molecular-level guidance for designing high-performance GDYQDs/NGR-based on-site electrochemical sensors.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Tian Wang,Zhiliang Jin
The design and construction of photocatalysts are the crucial step for solar-driven hydrogen evolution. Herein, a new type of graphdiyne (C n H 2n-2 )-based photocatalyst, which was prepared by one pot method, was used to promote hydrogen evolution reaction by constructing GDY/VS 2 ohmic junction with S sites anchoring on the surface. Actually, the unique two-dimensional conjugated carbon network of GDY can maintain the structural stability. The uneven surface facilitates the flow of electrons, which makes GDY a good electron donor. In addition, the expanded interlayer spacing of VS 2 exposes more hydrogen evolution active sites. The increase in surface electronegativity of composite catalysts enhances their redox ability and charge transfer kinetics. The band edge of the graphdiyne-metal sulfide Ohmic contact interface is bent, allowing electrons to flow into the co catalyst without resistance. These synergistic effects lead to the robust hydrogen production of GDY/VS 2 , which was increased by nearly 10.3 times compared with that of pure GDY. Finally, charge migration at the interface of graphdiyne-metal sulfide heterojunction was proposed and further verified combining in situ XPS and theory calculation. This research marks a significant stride for enhance the efficiency of photocatalytic hydrogen evolution by designing and constructing composite heterojunction materials.
研究领域:
材料科学
·
能源科学
·
化学
✓ 已验证
DOI
高影响因子
Solar RRL
·
2024
·
IF 6
Meijuan Ding,Mei Li,Jingzhi Wang,Zhiliang Jin
Herein, the application of graphdiyne (GDY) in photocatalytic splitting of water and hydrogen evolution is explored. In this article, GDY is prepared by ball milling using calcium carbide as raw material, and it is compounded with phosphating Mo–metal-organic frameworks (MOFs), to explore the photocatalytic hydrogen evolution performance and hydrogen evolution mechanism of composite catalysts. In the results, it is shown that the P–Mo–MOFs (PMF)/G-25 composite photocatalyst has the best hydrogen evolution activity, and the hydrogen evolution rate is highest at pH = 9, reaching 1668.5 μmol g −1 h −1 . Through the four-cycle hydrogen evolution cycle stability test, the PMF/G-25 composites still has good hydrogen evolution stability. It is shown that the combination of phosphating Mo–MOFs and GDY can enhance the hydrogen evolution activity and has excellent hydrogen evolution performance. In the Mott–Schottky test, it is found that PMF and GDY are n-type semiconductors. The conduction and valence values are −0.56 and 1.10 eV for GDY, and −0.68 and 0.97 eV for PMF, respectively. The mechanism of photocatalytic hydrogen evolution is analyzed, and it is speculated that S-Scheme heterojunction is formed between PMF and GDY to further promote photocatalytic hydrogen evolution.
研究领域:
材料科学
·
催化化学
✓ 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）