Materials Chemistry Frontiers
·
2022
·Vol. 6
·期 21
·3205-3212
·
IF 8.683
Jiangting Zhao,Zhuo Xiong,Junyi Wang,Yaqin Qiu,Yongchun Zhao,Pengfei Liu,Junying Zhang
In this study, a 1D/2D ZnO nanofiber/graphdiyne oxide heterojunction was designed for photocatalytic CO2 reduction, and the difference between graphdiyne and graphdiyne oxide was investigated as co-catalysts. The ZGDO heterostructure has strong reactant adsorption capacity due to the enlarged specific surface area and abundant hydrophilic oxygen-containing functional groups. DFT calculations, EPR, and in situ XPS further verified the S-scheme charge transfer mechanism in ZGDO. In contrast, the abilities of GD to adsorb CO2 and enhance light absorption are not as good as those of GDO, and the band structure of GD is not conducive to the formation of a favorable electric field drive at the interface with ZnO. The CO yield of ZGDO with only 3% GDO was up to 34.9 μmol h−1 g−1 in the gas–phase photocatalytic reduction of CO2, which was 4.4, 24, and 1.5 times that of ZnO, GDO, and ZnO/GD, respectively. This work opens new possibilities for the application of new non-metallic photocatalysts in the photoreduction of CO2.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
Small
·
2021
·Vol. 17
·期 12
·2006442
·
IF 13.281
Yan Lv,Xueyan Wu,He Lin,Jiaxin Li,Hongbo Zhang,Jixi Guo,Dianzeng Jia,Hongmei Zhang
Carbon-supported metal nanocatalysts have received substantial attention for heterogeneous catalysis in industry. Hunting for suitable and impactful carbon supports that have strong interactions with metal nanocatalyst is a matter of great urgency. Herein, a well-designed graphdiyne layer decorated on the carbon nanotubes sidewalls (CNT@GDY) serves as a novel carbon support. This unique hybrid structure effectively traps platinum and palladium atomic clusters (Pt/Pd-ACs) with dimensions of 0.65 nm and 1.05 nm uniformly and firmly, forming novel carbon-supported metal nanocatalysts (Pt(Pd)-ACs/CNT @ GDY) for efficient hydrogen generation and aromatic nitroreduction, respectively. The Pt-ACs/CNT@GDY can deliver an HER current density of 10 mA cm −2 with a small overpotential of 23 mV in 0.5 M H 2 SO 4 , showing a greatly enhanced mass activity, intrinsic activity than the commercial Pt/C catalyst. The Pd-ACs/CNT@GDY also exhibits excellent catalytic activity and a high turnover frequency of 38.0 min −1 for aromatic nitroreduction. The carbon support turns out to possess excellent conductivity, abundant and uniform reactive sites, low redox potential, more negative surface and large specific surface area as well as a strong interaction with ACs, as anticipated in ideal supports, which can be applied in other metal-supported catalysts.
研究领域:
材料科学
·
催化化学
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产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2021
·
IF 10.618
Xijuan Hao,Fangxin Hu,Yu Gu,Hongbin Yang,Changming Li,Chunxian Guo
Nitric oxide as a signal molecule participates in a variety of physiological and pathological processes but its real-time detection in cell assays still faces challenging because of the trace amount, short half-life and easy conversion to other substances. We report here a rational design by assembling highly π-conjugated and small capacitive gaphdiyne (GDY) with a coordination complex of hemin (HEM) into a molecularly assembled material of GDY/HEM to achieve ultrafast and real-time monitoring of nitric oxide in cell assays. GDY comprising alkynyl C atoms can hybridize with the HEM to enable strong π-π interaction and atomic dispersion of iron sites while avoiding the formation of catalytically inactive dimer for the HEM. These characteristics make the GDY/HEM an excellent sensing material towards nitric oxide, which has an ultrafast response time of 0.95 s, a low detection limit of 7 nM and long linear range up to 151.38 μΜ. The GDY/HEM realizes real-time monitoring nitric oxide released from cancer and normal cells, demonstrating its capability for cell analysis.
研究领域:
材料科学
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分析化学
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生物医学工程
·
细胞生物学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Zhiliang Jin,Tian Wang,Entian Cui,Xiuli Yang
The construction of heterojunctions is often considered an effective strategy for achieving solar driven photocatalytic decomposition of water. Graphdiyne has unique properties such as highly π conjugated structure, ideal direct bandgap, and high charge carrier mobility, making it a candidate for ideal photocatalysts. In this work, a graphdiyne based composite catalyst GDY-Cu with ohmic contact interface was prepared through organic synthesis. Subsequently, a S-scheme heterojunction was constructed between the contact interface of WO 3 nanorods with surface defects and GDY-Cu samples to promote electron transfer. The hydrogen evolution ability of GDY-Cu/WO 3 samples with different ratios was studied by adjusting the addition amount of GDY-Cu. In addition, GDY-Cu/WO 3 samples exhibits the highest photocatalytic hydrogen evolution activity, reaching 12.2 times that of pure GDY. In fact, the joint construction of Ohmic junctions and S-scheme heterojunctions provides a unique transport pathway for electron transfer. The built-in electric field between interfaces provides power for electron migration. Importantly, in-depth research on in-situ XPS and density functional theory calculations has confirmed the charge transfer pathway. Thorough charge dynamics analysis of the migration ability of photo generated charge carriers. This work not only enriches the photocatalytic system by integrating Ohmic junctions and S-scheme heterojunctions, but also provides a new design strategy for constructing graphdiyne based materials.
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DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2023
·
IF 12.6
Jinyue Shi,Shiyu Liu,Peiyuan Li,Yu Lin,Hu Luo,Yeyu Wu,Jun Yan,Ke-Jing Huang,Xuecai Tan
MicroRNA-21 (miRNA-21) is currently the only known oncogenic miRNA that is upregulated in almost all malignant tumors and exhibits a broad spectrum of tumor recognition characteristics. It holds significant value in the early diagnosis, malignant degree assessment, and prognostic evaluation of tumors. In this study, a novel dual-mode self-powered sensing platform is developed using Au nanoparticles/graphdiyne as the electrode substrate and combined with DNA nanoring for highly sensitive and specific detection of miRNA-21. The DNA nanoring structure, which is easy to prepare and contains multiple recognition sites, induces significant electrochemical/colorimetric signal responses of the signaling molecule methylene blue . Under optimal conditions, the linear ranges of the electrochemical and colorimetric detection modes of this self-powered sensor are 0.1 fM-100 pM and 0.1 fM-10 nM, respectively, with the detection limits of 35.1 aM and 61.6 aM (S/N=3). This strategy provides a new reference for the sensitive detection of microRNA and has immense potential for application in the screening and detection of clinical nucleic acid diseases.
研究领域:
生物传感器
·
纳米技术
·
癌症诊断
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电化学
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比色法
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分子生物学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2023
·
IF 7.3
Yibo Niu,Yu Wang,Linli He,Yujie Wang,Huizhen Ma,Nan Li,Danli Xie,Jianshan Ye,Ying Ma
Cathodic photoelectrochemical (PEC) bioanalysis has been attracting great interest due to its excellent anti-interference capability. As a p-type wide energy band gap semiconductor, CuI is regarded as an ideal material for the construction of photocathodes, while its poor stability and narrow light absorption range limit its application as a photoelectrode in PEC sensing. Herein, we report a simple in-situ growth strategy to synthesize CuI/Porphyrin-based graphdiyne (PDY) p-n heterojunction as a photocathode. CuI crystals were firstly deposited on the ITO glass surface via the electrochemical deposition , and CuI could catalyze the in-situ Glaser coupling reaction of 5,10,15,20-tetra(4-ethynylphenyl) porphyrin (TEPP), allowing the growth of PDY film on the CuI crystal surface and forming the p-n heterojunction photocathode. The as-prepared PDY film plays a crucial role in the significant enhancement of PEC performance because of its intense light absorption, and the formation of CuI/PDY p-n heterojunction can efficiently promote the transportation of photogenerated carriers between CuI and PDY thanks to the excellent electrical conductivity and high carrier mobility of highly π-conjugated PDY. After the growth of PDY, the photocurrent response of PDY/CuI/ITO is almost seven folds higher compared to that of CuI/ITO. Owing to the selective Cu–S bond interaction between l -cysteine (L-Cys) and Cu + , a PEC sensor for the L-Cys determination is developed with a broad linear range from 0.05 to 1.2 μM and a limit of detection (LOD) of 0.03 μM.
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产品关联
DOI
高影响因子
Advanced Sustainable Systems
·
2024
·
IF 6.5
Mingming Li,Zhenhua Zhai,Shuman Zhang,Ying Liu,Huiyi Tan,Jiang Li,Runmei Ding,Suzhen Guan,Huiqin Yao
In recent years, researchers have shown great interest in intelligent electrochemical interfaces due to their potential applications. This work addresses the challenge of integrating multiple stimuli-responsive properties while maintaining a robust electrochemical response. In this work, graphdiyne (GDY) is loaded on glassy carbon electrode (GCE) by dropping method to obtain the GDY/GCE layer. Copper hexacyanoferrate (CuHCF) is then electrodeposited onto the GDY/GCE, creating a catalytic layer for N-acetylcysteine (NAC). The stimuli-responsive hydrogel poly(N,N-diethylacrylamide) (PDEA) is applied on the catalytic layer surface via drop-coating. This configuration facilitated reversible electrochemical responses to changes in temperature, electrolyte composition, and pH levels. By analyzing peak current differences and corresponding potential changes, a type of logic gate is successfully simulated, including a 4-input/7-output logic gate and a three-state logic gate. This novel approach significantly advanced the construction of electrochemical pharmaceutical logic gates.
研究领域:
电化学
·
生物医学工程
·
材料科学
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产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2026
·
IF 4.3
Jizhe Gao,Mingxuan Wang,Yu Zhang,Xiaoxiao Xia,Tao Zhu,Rongzong Zheng
The electrochromic performance of polyaniline (PANi) is primarily restricted by its wide energy bandgap ( E g ) and dense microstructure. In this study, PANi@graphdiyne (GDY) composite films featuring molecular-level interfacial coupling and a three-dimensional porous structure were fabricated via a one-step electrochemical deposition method. Density functional theory (DFT) calculations indicate that the π-π conjugative interaction between PANi and GDY narrows the E g from 4.14 eV to 1.37 eV, significantly enhancing the electron transport capability. The GDY-induced loose porous structure elevates the ion diffusion coefficient by four orders of magnitude (reaching 1.36 × 10 -8 cm 2 ·s -1 ). Benefiting from the synergistic optimization of dual-carrier (electron/ion) transport kinetics, the composite film delivers exceptional electrochromic performance, including a high optical contrast (65.97% at 1092 nm), a high coloration efficiency (97.18 cm 2 ·C -1 ), and superior cycling stability (retaining 76% of its initial contrast after 850 cycles). Meanwhile, the film achieves a radiative temperature tuning range of 11.2°C. The introduction of GDY not only overcomes the bottlenecks of low intrinsic conductivity and sluggish ion transport kinetics in PANi but also endows the film with exceptional thermal radiation modulation capability, providing a new strategy for designing high-performance electrochromic films and thermal management devices.
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DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2022
·
IF 8.008
Hetong Qi,Yuxi Tong,Mengyue Zhang,Xuemei Wu,Ling Yue
We demonstrate the preparation of a dual-site carbon nanozyme, boron-doped and ketonic carbonyl (−C=O) group-enriched graphdiyne (B-GDY), with an enhanced peroxidase-like activity. Taking advantage of acidic oxidation treatment, GDY oxide (GDYO) with abundant surface oxygen-containing groups is obtained from pristine bulk GDY. Upon further thermal annealing of GDYO with H3BO3 under an inert atmosphere, B is introduced into GDY, while the loading of −C=O groups is increased onto B-GDY. We discover that boron-doped and ketonic carbonyl group-enriched graphdiyne as a dual-site carbon nanozyme endows it with an enhanced peroxidase-like activity, which is nearly 4.2-fold higher than that of GDY without B atoms and 6.6-fold higher than that of GDYO without B atoms and with low loading of −C=O groups. The high peroxidase-like activity of B-GDY is ascribed to the dual active sites (−C=O group and B atom) within it, which facilitates the adsorption and decomposition of H2O2 into hydroxyl radicals revealed by experimental and theoretical studies. Moreover, B-GDY is successfully employed to develop a colorimetric method for the detection of glucose with good sensitivity and selectivity. This work probes into the intrinsic peroxidase activity and structure–reactivity correlation, creating effective strategies for the preparation of GDY-based nanozymes.
研究领域:
材料科学
·
生物化学
·
纳米医学
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DOI
高影响因子
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2021
·Vol. 37
·期 6
·1296-1300
·
IF 1.307
Rong Xin,Lu Xiuli,Lu Tongbu
T he fabrication of highly active and easily recyclable Pd-based catalyst is meaningful for their practical application. Herein, a Pd-based dip-catalyst(Pd@Pyr-GDY) is fabricated on graphdiyne(Pyr-GDY) grown on copper foam, and applied in the reduction of nitroarenes. Specially, the as-formed Pd@Pyr-GDY shows good catalytic performance toward the reduction of 4-nitrophenol(4-NP) to 4-aminophenol(4-AP) by NaBH 4 with a rate constant k value of 3.84 min −1 , which is 12-fold higher than that of the commercial Pd/C. More importantly, Pd@Pyr-GDY could be easily and rapidly recovery from the reaction medium and no distinct inactivation was found after six cycles of the reaction. This work presents an easy way to design an efficient and easily recyclable Pd-based catalyst for practical use.
研究领域:
材料科学
·
催化化学
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产品关联
DOI
高影响因子
ANALYST
·
2022
·Vol. 147
·期 22
·4991-4999
·
IF 5.227
Jinyue Shi,Yu Lin,Weiling Qin,Mingxiang Li,Yuyi Zhou,Yeyu Wu,Hu Luo,Ke-Jing Huang,Xuecai Tan
Graphdiyne (GDY) is an sp and sp2 co-hydrocarbon allotrope whose particular structure endows it with many fascinating properties, including abundant chemical bonds, high conjugation, natural pores, high carrier mobility, high conductivity and stability, etc. In this work, two-dimensional graphdiyne is prepared as an electrode substrate material coupling with an exonuclease III-assisted amplification strategy to construct a superior-performance self-powered biosensor based on enzymatic biofuel cells for highly sensitive detection of the tumour marker miRNA-21. Glucose oxidase (GOD) is first immobilized on the GDY/AuNP composite to prepare a bioconjugate. GDY/AuNP modified carbon cloth is used as an enzyme biofuel cell electrode, which is then modified with bilirubin oxidase as a biocathode. The bioconjugate binds to GOD through specific binding to the bioanode. When miRNA-21 is present, specific recognition by exonuclease III in the system results in cleavage of the capture probe, and miRNA-21 is recovered and involved in the cycle. The target miRNA-21 then causes corresponding changes in the open-circuit voltage of the self-powered system. Based on this, a sensitive detection method was constructed, within the scope from 0.1 fM to 0.1 nM with a shallow detection limit of 55.2 aM (S/N = 3). The new approach triumphantly has been used to detect miRNA-21 in serum, which provides a compelling new way for early diagnosis of related cancers.
研究领域:
生物传感器
·
纳米材料
·
癌症诊断
·
生物化学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Chemosensors
·
2023
·Vol. 11
·期 2
·75
·
IF 4.2
Yijing Ai,Lisi Wang,Wanting Fu,Xiang Ye,Juan Zhou,Xiaoping Zhang,Shuhai He,Wei Sun
In this paper, graphdiyne (GDY)−modified glassy carbon electrode was prepared and further used for the sensitive and simultaneous detection of three target heavy metal ions of Zn2+, Cd2+and Hg2+by codeposition with Bi3+in the mixture solution. GDY−modified electrodes exhibit a larger electrode area and abundant active sites, which is favorable for absorbing more metal ions. Bismuth has low toxicity and can form alloys with zinc, cadmium and mercury. Therefore, three kinds of heavy metal ions can be pre-concentrated with bismuth on the GDY−modified electrode surface, and the following stripping analysis results in high sensitivity and selectivity. By using differential pulse anodic stripping voltammetry, the detection ranges of Zn2+, Cd2+and Hg2+were from 2.0 to 100.0 μM with low detection limits of 0.255 μM, 0.367 μM and 0.796 μM, respectively. In addition, the sensor showed excellent repeatability, reproducibility, and stability, which was applied to sensitive analysis of river water samples with satisfactory results.Keywords:graphdiyne;bismuth;heavy metal ions;electrochemistry;differential pulse anodic stripping voltammetry
研究领域:
环境科学
·
分析化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）