BIOSENSORS & BIOELECTRONICS
·
2014
·
IF 6.451
Siqi Zhang,Amin Bao,Ting Sun,Erkang Wang,Jiahai Wang
By virtue of a biomimetic nanopore and single-walled carbon nanotubes, a new sensor for adenosine triphosphate (ATP) detection is designed. As compared to the routine approach, the present scenario does not entail the surface modification of nanopore with analyte-specific probes. The underlying mechanism relies on a symmetric nanopore sequentially modified with polyethyleneimine (PEI) and Zr 4+ that can quantitate the concentration of ATP-bound aptamer, while other free aptamers are removed by single-walled carbon nanotubes (SWNTs). The detection limit of the nanopore sensor is 27.46 nM, and the linear range is from 50 nM to 400 nM. The biosensor with an excellent selectivity against guanosine triphosphate (GTP), uridine triphosphate (UTP), and cytosine triphosphate (CTP) can be applied in the real samples such as Hela cell .
研究领域:
纳米技术
·
生物传感
·
分析化学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Hui Lv,Ying Wang,Juan Wu,Zheming Liu,Lin Liu,Bencai Lin,Guanggui Cheng,Ningyi Yuan,Jianning Ding
Wearable strain sensors fabricated with ionic conductive hydrogels have broad application prospects in various engineering fields. However, current flexible hydrogel strain sensors still encounter numerous challenges in practical applications, mainly manifested as poor mechanical properties and significant performance degradation at low temperatures. Herein, a multifunctional ionic conductive hydrogel (Glu (Glucan)/P(AM (acrylamide)-co-AA (acrylic acid))-Zr4+/LiCl) was successfully fabricated, which demonstrated outstanding comprehensive performance. Its elongation at break could reach 2213%, the electrical conductivity was 3.086 S/m, and it maintained good flexibility without freezing even at −20 °C. The strain sensor assembled from Glu/P(AM-co-AA)-Zr4+/LiCl hydrogel featured high sensitivity (gauge factor = 7.37), a wide sensing detection range (0% to 500%), and a fast response time (140, 137 ms). Based on these characteristics, the [G1.5/P–Zr0.04]/Li3 hydrogel strain sensor could precisely monitor and distinguish various human physiological activities, including large-scale joint movements (such as elbow flexion and extension and knee joint bending) as well as subtle changes in the throat during speaking. Therefore, the multifunctional performance of the Glu/P(AM-co-AA)-Zr4+/LiCl hydrogel is expected to play a demonstrative role in flexible electronic products.
研究领域:
材料科学
·
高分子科学
·
传感器技术
·
柔性电子学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xiaomeng Ma,Jialun Du,Xueli Ji,Lintao Liu,Haitao Wu,Hideo Kimura,YiZhong Lu,Zhenxing Yue
In this work, Nd 2 (Zr 1- x Sn x ) 3 (MoO 4 ) 9 (0.02 ≤ x ≤ 0.1) (NZSM) ceramics were successfully obtained through conventional solid-state route. Phase analysis, microstructure, and properties were investigated scientifically by XRD , SEM, and network analyzer, respectively. XRD results revealed that all samples with different substitution amounts of Sn 4+ formed the pure phase with R-3c space group. The permittivity was related to the polarizability and the bond of Zr2-O5, the bond of Nd-O2 possessed a positive influence on Q×f . The reduced octahedral distortion and increased bond energy made the temperature coefficient more stable. Infrared reflection spectrum results showed that the permittivity was mainly caused by the absorption of phonon oscillation. The optimum properties ( ε r = 10.34, Q×f = 74,795 GHz, τ f = −13.55 ppm/°C) were obtained when x = 0.02 sintered at 750 °C.
研究领域:
材料科学
·
陶瓷
·
微波介电材料
·
固态化学
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2021
·
IF 3.08
Kun Zhu,Haitao Lv,Yanmin Wang,Zhidong Pan
Sm 3+ doped calcium stannate (CaSnO 3 :Sm 3+ ) and (Sm 3+ , Zr 4+ )-co-doped calcium stannate (CaSnO 3 :Sm 3+ , Zr 4+ ) photoluminescent phosphors were synthesized via co-precipitation and subsequent sintering in oxidizing atmosphere at 1400 °C for 60 min with SnCl 4 ·5H 2 O, CaCl 2 ·2H 2 O, ZrO(NO 3 ) 2 · x H 2 O and Sm 2 O 3 as main raw materials. The synthesized samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, photoluminescent spectroscopy, luminescent decay curves, afterglow spectroscopy and thermo-luminescent glow curves. The results show that CaSnO 3 pure phase is synthesized in co-precipitation reaction at an optimum molar ratio of CaCl 2 ·2H 2 O:SnCl 4 ·5H 2 O of 1.4:1.0 and subsequent sintering at 1400 °C for 60 min. Calcium stannate as a host matrix can be doped with Sm 3+ ions or co-doped with Sm 3+ /Zr 4+ ions for the formation of white photoluminescent phosphors. CaSnO 3 :0.03Sm 3+ phosphor has an optimum photoluminescent intensity. Also, the fluorescent emission intensity of CaSnO 3 :0.03Sm 3+ ，0.04Zr 4+ phosphor under excitation of 365 nm wavelength can be enhanced due to Zr 4+ ions doping at an optimum doping amount y of 0.04. The CIE 1931 chromaticity coordinates change from (0.3600, 0.3535) for CaSnO 3 :0.03Sm 3+ phosphor to (0.3622, 0.3574) for CaSnO 3 :0.03Sm 3+ , 0.04Zr 4+ phosphor as the average crystalline size decreases from 71.5 to 68.3 nm and the unit cell volume increases from 0.2686 to 0.2775 nm 3 . In addition, the electron transition mechanism for the photoluminescent and long afterglow properties was also discussed.
研究领域:
材料科学
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光学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
SYNTHETIC METALS
·
2021
·
IF 3.266
Adeel Ahmed,Muhammad Usman,Song Wang,Bing Yu,Youqing Shen,Hailin Cong
The increasing worldwide pollution of water resources with dyes has emphasized the need to develop highly versatile and effective approaches for their remediation. In this study, zirconium substituted manganese cobalt ferrite (Mn 0.2 Co 0.8 Zr x Fe 2−x O 4 ) nanoparticles , and their composites with reduced graphene oxide (Mn 0.2 Co 0.8 Zr x Fe 2−x O 4 /rGO) were synthesized and used as effective photocatalyst materials for the degradation of dyes. X-ray diffraction analysis was executed to probe the cubic spinel structures of nanoparticles in the size range of 18–24 nm. Scanning Electron Microscopy revealed the formation of spherical shaped nanoparticles and their dispersion on the exfoliated surface of rGO. The saturation magnetization and remanence of samples decreased from 57.23 to 24.16 emu/g and 27.68–13.98 emu/g respectively while the coercivity of samples increased from 1067.76 Oe to 1616.97 Oe due to the incorporation of non-magnetic Zr 4+ into the lattice. The BET surface area of nanoparticles and nanocomposites lies in the range of 47.52–78.33 m 2 /g, while the average pore size was found to be 2.48–21.43 nm. The degradation performance of as-prepared nanoparticles and nanocomposites was evaluated against Alizarin Yellow R (AYR) dye under visible light irradiation. Mn 0.2 Co 0.8 Zr x Fe 2−x O 4 /rGO nanocomposites showed higher degradation performance and 92.49% dye degradation was achieved in 70 min, while in the case of Mn 0.2 Co 0.8 Zr x Fe 2−x O 4 nanoparticles 52.45% dye was degraded in 120 min. The effects of different operational parameters on the degradation performance of nanocomposites were investigated thoroughly. The higher photodegradation of nanocomposites was attributed to the large surface area and less magnetization, making them potential candidates for their applications in water purification.
研究领域:
材料科学
·
环境科学
·
纳米技术
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2019
·Vol. 10
·期 1
·1-12
·
IF 11.878
Cao Na,Chen Zheng,Zang Ketao,Xu Jie,Zhong Jun,Luo Jun,Xu Xin,Zheng Gengfeng
The electrochemical N 2 fixation to produce ammonia is attractive but significantly challenging with low yield and poor selectivity. Herein, we first used density function theory calculations to reveal adjacent bi-Ti 3+ pairs formed on anatase TiO 2 as the most active electrocatalytic centers for efficient N 2 lying-down chemisorption and activation. Then, by doping of anatase TiO 2 with Zr 4+ that has similar d -electron configuration and oxide structure but relatively larger ionic size, the adjacent bi-Ti 3+ sites were induced and enriched via a strained effect, which in turn enhanced the formation of oxygen vacancies. The Zr 4+ -doped anatase TiO 2 exhibited excellent electrocatalytic N 2 fixation performances, with an ammonia production rate (8.90 µg·h −1 ·cm −2 ) and a Faradaic efficiency of 17.3% at −0.45 V versus reversible hydrogen electrode under ambient aqueous conditions. Moreover, our work suggests a viewpoint to understand and apply the same-valance dopants in heterogeneous catalysis, which is generally useful but still poorly understood.
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
Small
·
2023
·Vol. 19
·期 42
·2302764
·
IF 13.3
Mengyi Wu,Jiurong Li,Yongzhong Wu,Xiao Gong,Min Wu
Here, a rational strategy to achieve multifunctional N, S codoped carbon dots (N, S-CDs) is reported, aiming to improve the photoluminescence quantum yields (PLQYs) of the CDs. The synthesized N, S-CDs have excellent stability and emission properties independent of excitation wavelength. Through the introduction of S element doping, the fluorescence emission of CDs is red-shifted from 430 to 545 nm, and the corresponding PLQYs can be greatly enhanced from 11.2% to 65.1%. It is found that the doping of S elements causes an increase in the size of CDs and an elevated graphite N content, which may be the key factors to cause the redshift of fluorescence emission. Furthermore, the introduction of S element also serves to suppress the nonradiative transitions, which may be responsible for the elevated PLQYs. Besides, the synthesized N, S-CDs have certain solvent effect and can be applied to detect water content in organic solvents, and have strong sensitivity to alkaline environment. More importantly, the N, S-CDs can be used to achieve an “on–off–on” dual detection mode between Zr 4+ and NO 2 − . In addition, N, S-CDs combinedwith polyvinylpyrrolidone (PVP) can also be utilized as fluorescent inks for anti-counterfeiting applications.
研究领域:
材料科学
·
化学
·
分析化学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 5
·2941-2952
·
IF 4.186
Kang Du,Tailai Wen,Mengdie Zhou,Zheyu Liu,Changzhi Yin,Wei Zhu,Cai Zhou,Bohan Zhang,Shengxiang Wang,Wen Lei
The traditional solid-state reaction method was used to prepare Ca 2 Sn 2− x M x Al 2 O 9 (M = Ti, Zr, and Hf) ceramics. Then, the impact of an M 4+ substitution of Sn 4+ on the phase transition, crystal structural parameter, and microwave dielectric properties of Ca 2 Sn 2− x M x Al 2 O 9 (0 ≤ x ≤ 0.4) ceramics were investigated. Ti 4+ could not replace the Sn 4+ of Ca 2 Sn 2 Al 2 O 9 due to its small ionic radius, and the Al-based second phases of Ca 2 Sn 2− x Ti x Al 2 O 9 ceramics were confirmed by the X-ray diffractometer and EDS map scanning results. With the Zr 4+ and Hf 4+ substitutions of Sn 4+ , the SnO 2 and CaSnO 3 second phases of Ca 2 Sn 2 Al 2 O 9 ceramic were inhibited, and the Ca 2 Sn 2− x M x Al 2 O 9 (M = Zr and Hf) (0.05 ≤ x ≤ 0.2) single-phase ceramics with orthorhombic structure ( Pbcn space group) were obtained. New MO 2 (M = Zr and Hf) and CaAl 2 O 4 second phases appeared in the Ca 2 Sn 2− x M x Al 2 O 9 (M = Zr and Hf) (0.3 ≤ x ≤ 0.4) ceramics, and their contents increased gradually with the increase in x . The Ca 2 Sn 2− x M x Al 2 O 9 (M = Zr and Hf) (0.05 ≤ x ≤ 0.2) ceramics exhibited high Q × f because of their pure phase compositions, and the Q × f of Ca 2 Sn 2 Al 2 O 9 ceramic was improved to 77 800 GHz (12.6 GHz) in the Ca 2 Sn 1.9 Zr 0.1 Al 2 O 9 ceramic. The Q × f values of Ca 2 Sn 2− x M x Al 2 O 9 single-phase ceramics were mainly controlled by r c (Sn/M–O) and r c (Al–O). The τ f values of single-phase Ca 2 Sn 2− x M x Al 2 O 9 ceramics were related to octahedral distortions. The Zr 4+ and Hf 4+ substitution of Sn 4+ optimized the phase compositions and microwave dielectric properties of the Ca 2 Sn 2− x M x Al 2 O 9 ceramics, and the Ca 2 Sn 1.9 Zr 0.1 Al 2 O 9 ceramic sintered at optimal temperature exhibited excellent microwave dielectric properties ( ε r = 8.67, Q × f = 77 800 GHz at 12.6 GHz and τ f = −69.8 ppm/°C).
研究领域:
材料科学
·
电子工程
✓ 已验证
DOI
高影响因子
ENERGY & FUELS
·
2025
·
IF 5.3
Cuiping Tang,Xinqi Liu,Yong Chen,Xiaoya Zang,Jinan Guan,Deqing Liang
During the production and transportation of natural gas, hydrate formation and accumulation in pipelines can lead to blockages, resulting in gas leakage, economic losses, and safety hazards. Recently, the development of superhydrophobic antigas hydrate coatings for pipelines has been identified as an effective strategy to mitigate pipeline plugging. Although superhydrophobic surfaces can effectively reduce the adhesion strength of hydrates to the wall, they tend to promote surface gas enrichment and water molecule ordering, thereby accelerating hydrate nucleation and growth. Furthermore, the microstructure of superhydrophobic surfaces is relatively fragile and susceptible to damage, which limits their long-term stability and reliability. This study proposes a hydrophilic gel coating, Zr4+/DMSO-Gel, which can delay the nucleation induction period of methane hydrates on solid surfaces and reduce their growth rate. Microscopic observations revealed that the coating induced partial decomposition of methane hydrate, resulting in the formation of a large water layer, which can reduce wall adhesion. Furthermore, Raman spectroscopy was employed to analyze the structure of surface water molecules, revealing the mechanism by which the coating inhibits hydrate formation. The results showed that strong hydrogen bonding interactions between the coating surface and water molecules resulted in the predominance of bound water (BW) on the surface, while the proportion of tetra-coordinated hydrogen-bonded water (4-HBW) was reduced, thereby inhibiting the formation of hydrate cage structures. These findings not only provide a novel approach for the development of hydrate-resistant coatings but also offer new insights into antiplugging strategies for natural gas pipelines.
研究领域:
材料科学
·
化学工程
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2016
·
IF 4.035
Junyong Dai,Miaode Wang,Hailong Liu
It is urgent to selectively enrich trace phosphorylated proteins or peptides from complex biological sample for mass spectrometry (MS)-based phosphoproteomics. In this study, a novel immobilized metal affinity chromatography (IMAC) material with DOTA(1,4,7,10-tetraazacyclododecane N, N′, N′′, N′′′-tetra-acetic acid) coated on the surface of TiO 2 nanomaterials and functionalized with the metal ion Zr 4+ (TiO 2 @DOTA-Zr) has been synthesized successfully to improve the enrichment specificity and sensitivity for phosphopeptides. TiO 2 nanomaterials were chosen as a support matrix, which will offer a high specific surface area to enhance the amounts of immobilized Zr 4+ ions and will provide an additional selectivity for the special enrichment of phosphopeptides. Also, the introduction of DOTA will endow a stronger binding interaction between the Zr 4+ ion and DOTA to reduce the loss of the metal ion Zr 4+ during sample loading and washing steps. The novel TiO 2 @DOTA-Zr nanohybrids exhibited higher sensitivity and selectivity for phosphopeptides from the standard protein digests, the tryptic digests of nonfat milk and human serum, showing a great selective enrichment capability toward the complicated biological samples.
研究领域:
生物化学
·
蛋白质组学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2021
·Vol. 104
·期 9
·4854-4866
·
IF 3.784
Chunyu Guo,Enhui Wang,Xinmei Hou,Junyi Kang,Tao Yang,Tongxiang Liang,Guoping Bei
Aiming to improve the density of calcium hexaaluminate (CA 6 ), Zr 4+ doped CA 6 with the structural formula of CaAl 11.73 ◊ 0.25 Zr 0.02 O 18.41 ◊ 0 . 59 (CaAl 11.73 Zr 0.02 O 18.41 ) was successfully synthesized at 1600℃ for 4 h in air. The effect of Zr 4+ doping on the crystal structure of CA 6 was investigated using first principle calculation, structure refinement in combination with experimental characterization. The results suggest that Zr 4+ prefers to substitute the Al 3+ at Al3 site, which can increase the lattice parameter of c -axis and the amount of Al vacancies. The average thickness of Zr 4+ doped CA 6 is increased by approximate 36% in comparison with the pure one. In addition, molecular dynamics (MD) simulation indicates that Zr 4+ doping can reduce the wettability of CA 6 to slag to some extent. The reaction test method was carried out and it shows that CA 6 with Zr 4+ doping possesses better slag penetration resistance. Based on this, the reaction mechanism is also discussed.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Tianyu Fan,Qiangyong Li,Qin Zhang,Zhuojun He,Yuru Zhao,Ziyao Qin,Junhong Wu,Guanghua Huang,Xiuli Chen,Yong-Zhen Zhao,Hai-Bo Liu,Jing Wang
A mesoporous silica composite featuring a pyrene fluorophore, designated as PyCl-SBA-15, was successfully synthesized for the simultaneous fluorescence-based detection and adsorptive removal of zirconium ions (Zr 4+ ). The composite exhibited characteristic fluorescence emission from pyrene excimers at 473 nm. Upon coordination with Zr 4+ through donation of electron lone pairs from nitrogen and oxygen atoms, the photo-induced electron transfer process was inhibited and the interpyrene ring distance was shortened, resulting in fluorescence enhancement at 473 nm. PyCl-SBA-15 achieved a low detection limit of 1.8 × 10 −7 M and exhibited excellent anti-interference properties. Furthermore, the material exhibited remarkable adsorption performance for Zr 4+ , with a fitted maximum adsorption value of 447 mg/g. To address practical application challenges, a cellulose acetate (CA)-based PyCl-SBA-15 membrane was developed, which eliminated the need for centrifugal separation of powdered materials, thereby greatly simplifying operational procedures, reducing time requirements, and enhancing the material's practical utility. The integration of sensitive detection, high-capacity adsorption, and facile membrane-based operation in PyCl-SBA-15 renders it a promising candidate for efficient Zr 4+ monitoring and removal across diverse applications.
研究领域:
环境科学
·
分析化学
·
材料科学
·
传感器与检测
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）