RSC Advances
·
2017
·Vol. 7
·期 80
·50634-50642
·
IF 3.108
Lijun Luo,Libo Li,Xixi Xu,Dong Liu,Jinyang Li,Kun Wang,Tianyan You
Sensitive and quantitative analysis of pentachlorophenol (PCP) is especially important in the field of ecology and agriculture. Herein, a highly sensitive and stable Ru(bpy)32+-based anodic electrochemiluminescence (ECL) system utilizing nitrogen-doped graphene quantum dots (NGQDs) as a novel co-reactant was firstly constructed to detect PCP. In this system, Ru(bpy)32+ was used as luminophor, while NGQDs were applied as co-reactant in place of the toxic and volatile tripropylamine. The novel co-reactant not only promoted the luminous efficiency of Ru(bpy)32+, but also improved the stability of the ECL system. In addition, the enhancement mechanism of NGQDs on Ru(bpy)32+ and quenching mechanism of PCP on Ru(bpy)32+/NGQDs were investigated in detail. Under the optimum conditions, the as-fabricated sensor for ultrasensitive PCP determination expressed a wider linear range of 1 × 10−15 to 1 × 10−5 g mL−1 and a lower detection limit of 2 × 10−17 g mL−1 with good stability and repeatability. Furthermore, based on the distinctive advantages of the novel ECL sensor, it was successfully used to detect PCP in tap water and river water, and satisfactory recoveries were obtained.
研究领域:
环境科学
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分析化学
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Xin Zhang,Li Tian,Zhuo Sun,Qian Wu,Xiangyu Shan,Yingjie Zhao,Ruizhan Chen,Juan Lu
A molecular-imprinted electrochemiluminescence sensor for procymidone (PCM) detection was reported based on Ru(bpy) 3 2+ @ZIF-7. A novel self-accelerated Ru(bpy) 3 2+ @ZIF-7 was prepared by one-step synthesis method, which exhibited high electrochemiluminescence (ECL) emission as a coreactant in the presence of tri- n -propylamine (TPrA). Concretely, ZIF-7 was not only the carrier of Ru(bpy) 3 2+ , but also the co-reaction promoter of Ru(bpy) 3 2+ /TPrA ECL system. The introduction of molecular imprint polymer (MIP) with PCM gave new characteristics of specific recognition of analyte PCM. The change value of ECL intensity (ΔI) was proportional to the logarithm of PCM concentration, with a wide linear range and a low detection limit of 1.0 × 10 −10 to 1.0 × 10 −6 mol L −1 and 2.0 × 10 −11 mol L −1 , respectively. The presented MIP-ECL sensor had high sensitivity, selectivity and stability, and had great potential in the field of food safety detection.
研究领域:
分析化学
·
食品安全检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
TALANTA
·
2024
·
IF 5.6
Shuning Yang,Li Tian,Weiwei Fu,Huiling Li,Chao Li,Yujia Song,Ruidan Li,Yanjia Guo,Lun Zhao
The novel TiO 2 and Ni-MOF materials were synthesized and utilized for the detection of permethrin (PET). A highly sensitive solid-state electrochemiluminescence (ECL) sensor was developed based on Ni-MOF@Ru(bpy) 3 2+ and Au NPs@TiO 2 . In this sensing platform, Ru(bpy) 3 2+ -Tripropyl Amine (TPrA) was used as a luminescent signal, Ni-MOF acted as a carrier to carry more luminescent reagents Ru(bpy) 3 2+ . Au NPs acted as promoters facilitated electron transport and TiO 2 could further enhance the luminescence intensity of the system by synergistical interaction with Au NPs. The possible mechanisms of signal amplification were investigated. The ECL intensity decreased significantly with increasing PET concentration, enabling the determination of PET amount through the observation of the change in ECL signal intensity (ΔI). Under optimal experimental conditions, the linear range of PET concentration from 1.0 × 10 −11 mol L −1 to 1.0 × 10 −6 mol L −1 , with a detection limit of 3.3 × 10 −12 mol L −1 (3S/N). This method was successfully applied to determine PET in various vegetable samples.
研究领域:
分析化学
·
环境科学
·
食品科学
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产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Heming Sun,Xiaonian Tang,Shuo Li,Ye Yao,Li Liu
The construction of the materials with one-dimensional (1D) hollow structure using Metal-organic frameworks (MOFs) as the templates has attracted much attention for applied in various fields. Herein, MOF-derived 1D Ru/Mo co-doped Co 3 O 4 hollow microtubes have been obtained via a simple solvothermal method . The as-synthesized samples are characterized by using XRD, FESEM , TEM , XPS, PL and BET. The sensing measurement reveals that when doping amount of Mo and Ru is 1% and 0.3%, the Co 3 O 4 sample exhibits the best sensing performance. Specially, 0.3% Ru/Mo-Co 3 O 4 sample exhibits high responses of 126–100 ppm TEA at a low operating temperature of 160 °C, which are about 18.5 times than that of pure Co 3 O 4 . Furthermore, it shows rapid response/ recovery speed (5 s/7 s), good selectivity and repeatability as well as excellent long-term stability. The good TEA sensing performance is attributed to the construction of 1D hollow architecture and synergistic effect of Ru/Mo co-doping. Thus, it is expected to be a promising sensing material for high-performance detection of TEA gas. In addition, this work provides an useful inspiration for preparation of MOF-derived materials with 1D hollow architecture for achieving excellent performance in various fields.
研究领域:
材料科学
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化学传感器
·
纳米材料
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Ru Jia,Xiaoxue Zhang,Li Gan,Muhammad Tahir,Zhen-Feng Huang,Lun Pan,Ruijie Gao,Chengxiang Shi,Xiangwen Zhang,Guidong Yang,Ji-Jun Zou
The nitrate reduction reaction (NO3RR) represents a promising route for water treatment and NH3 generation. This process involves the deoxygenation of NO3− to form nitrite (NO2−), followed by its subsequent hydrogenation. However, discrepancies in the rates of these two steps result in a decrease in faradaic efficiency (FE) and NH3 yield rate. Herein, we demonstrated a tandem catalyst of (Cu7/Ag3)7-Ru3/C achieving a high NH3 yield rate of 3.45 mmol h−1 cm−2 (2.30 mol gcat−1 h−1) and a FE of 93.48% at −0.9 V vs. the reversible hydrogen electrode. The Cu/Ag heterostructure greatly enhanced the conversion of NO3− to NO2− over a wide potential window due to the synergistic effect, while Ru, selectively adsorbing NO2−, provided active hydrogen derived from water hydrolysis to facilitate NH3 synthesis. Furthermore, (Cu7/Ag3)7-Ru3/C exhibited stable performance in a membrane electrode assembly over 60 hours, achieving an average NH3 yield rate of 6.90 mmol h−1. The ammonium chloride solid product was successfully obtained using an air stripping methodology. In situ characterization revealed that the surface microenvironment of Ru influenced the adsorption configuration of *NO and on-top adsorbed NO was more favorable for ammonia synthesis compared to bridge-adsorbed NO. The overall reaction pathway involved stepwise deoxygenation to form *N and subsequent gradual hydrogenation.
研究领域:
电催化
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环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Li Tian,Xuerong Wang,Kexin Wu,Yue Hu,Yue Wang,Juan Lu
A ultrasensitive electrochemiluminescence (ECL) biosensor was designed for the detection of dopamine using ZnSe quantum dots and Ru(bpy) 3 2+ as the signal probes, and graphite oxide and multi-walled carbon nanotube as the supporting matrix. The biosensor exhibits efficient and stable anodic ECL signal (at 1.10 V vs. Ag/AgCl) in phosphate buffer solution (pH 9.0) containing Tripropyl amine. The ECL emission decreases with adding dopamine, which can be attributed to the quenching effect from interaction between ZnSe and dopamine. The possible reaction mechanism of the ECL system is studied, and a method for the determination of dopamine is proposed. Under the optimal experimental conditions, the ECL emission decreases linearly with the logarithm of dopamine concentration in a wide linear range from1 × 10 −9 to 1 × 10 -5 mol L −1 with a detection limit of 6 × 10 -10 mol L -1 (S/N = 3). The biosensor is also successfully applied to detect dopamine in human blood serum samples.
研究领域:
生物传感
·
分析化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
POLYHEDRON
·
2025
·
IF 2.6
Keliang Wan,Lifeng Tan
Double-stranded RNA determines and regulates many biological processes in cells, plays a vital role in cell information transmission and gene regulation, and is a key target for the treatment of certain diseases. Here, we synthesized and characterized two novel ruthenium(II) complexes [Ru(phen) 2 ( o -CNPIP)] 2+ (Ru 1 ) and [Ru(phen) 2 ( o -CH 3 PIP)] 2+ (Ru 2 , phen = 1,10-phenanthroline, o -CNPIP = (2-(4-cyanodipyrido)-imidazo-[4,5- f ][1,10]-phenanthroline, o -CH 3 PIP = 2-(4-methyl)-imidazo-[4,5- f ][1,10]-phenanthroline). The interaction of the two Ru (II) complexes with double-stranded RNA poly(rA)•poly(rU) under dilute solution and molecular crowding conditions was studied by various spectroscopic methods and viscosity measurements. The results of UV–vis absorption spectroscopy and steady-state emission spectroscopy studies show that Ru 1 showed stronger binding and stabilizing ability to poly(rA)•poly(rU) and the binding affinity of Ru 1 and Ru 2 to poly(rA)•poly(rU) was weakened under molecular crowding conditions. Subsequently, the results of circular dichroism spectroscopy studies, thermal denaturation measurements and viscosity measurements also confirmed the results of our UV–vis absorption spectroscopy and steady-state emission spectroscopy studies. The results also showed that the two Ru(II) complexes bind, stabilize and perturb the structure of poly(rA)•poly(rU) by intercalation under dilute solution and molecular crowding conditions. In addition, it was found that the strength of these abilities was closely related to the binding affinity of the Ru(II) complexes to poly(rA)•poly(rU) by comparing the results of these studies. Furthermore, the thermodynamic parameters for the binding of Ru(II) complexes to poly(rA)•poly(rU) under the two conditions indicate that the binding process is spontaneous, is an enthalpy-driven process, and that hydrogen bonding serves as the dominant force. The purpose of this work is to explore the substituent effect of Ru(II) complexes and the effect of solution environment on the ability of Ru(II) complexes to bind and stabilize poly(rA)•poly(rU). Some insights resulting from this work are expected to facilitate the design of highly selective double-stranded RNA binders based on Ru(II) complexes. Interestingly, the phosphorescence intensity of Ru 2 after binding to poly(rA)•poly(rU) is significantly higher than that of Ru 1 under both solution conditions, with even stronger phosphorescence emission observed under molecular crowding conditions. This indicates that Ru 2 possesses the potential to serve as a nucleic acid luminescent probe for nucleic acid imaging in biological cells. To enhance its luminescent properties and specific binding capacity, further structural modification of Ru 2 is essential, which will be one of the key focuses of our future research efforts.
研究领域:
无机化学
·
生物无机化学
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核酸化学
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分子光谱学
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生物物理化学
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Zhuo Li,Yaqian He,Chunhui Li,Yuchu He,Xuwu Zhang,Song Ni,Desong Wang,Dawei Gao
The high interstitial fluid pressure at the tumor tissue is a key factor that hinders the deep penetration of nanomedicines into the tumor and affects the therapeutic effect. Herein, we designed a CaO2-based Ru nanozyme to efficiently consume the tumor interstitial fluid and enhance deep tumor penetration as well as treatment. CaO2/Ru-PDA-HA (CRPH) reached tumors via hyaluronic acid (HA)-mediated tumor targeting. Under 808 nm laser irradiation, CRPH pyrolyzed and released CaO2 and Ru, and then CaO2 would consume H2O to produce O2 and H2O2 for reducing the tumor interstitial fluid volume to promote the tumor penetration of medicines. Meanwhile, Ru nanoparticles with good peroxidase activity can decompose H2O2 to generate cytotoxic •OH. Therefore, photothermal and ROS synergistic therapy damaged deep tumor stem cells. The results showed that the relative tumor interstitial pressure was reduced to 56.34%, and the tumor inhibition rate was 99.67%. The design provides a synergetic hydrodynamic therapy strategy for enhancing the deep penetration of nanomedicines and boosting the antitumor effect.
研究领域:
肿瘤学
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纳米医学
·
生物材料
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产品关联
DOI
高影响因子
NANOTECHNOLOGY
·
2022
·Vol. 33
·期 21
·215502
·
IF 3.953
Fang-hui Wu,Guo-qiang Wen,Xiang-rui Luo,Xu-dong Xu,Zi Liu,Wen-bin Sun,Yan-shang Kang,Zhengquan Yan
To improve the sensitivity for electro-chemiluminescent (ECL) detection of chloramphenicol (CAP), a common broad-spectrum antibiotic, boron nitride quantum dots (BNQDs) were prepared with excellent photoelectric property and low toxicity. After its structure and electrochemical property were investigated in detail, it was noted that the ECL signal of Ru(Phen)32+ could be strengthened by the proposed BNQDs, which was further activated by ten's times in the presence of CAP. Under the optimized conditions, there was an excellent linear relationship between ΔECL and lgcCAP in a wide linear range from 1.0 × 10−10 to 1.0 × 10−6 mol l−1 CAP. The detection limit was super-low to be 3.3 × 10−11 mol l−1 (S/N = 3). When applied for CAP detection in real pharmaceutical and food samples, the recoveries were between 97.8% and 105.7% with R.S.D. less than 3.3%. A possible CAP-activated ECL mechanism of BNQDs-Ru(phen)32+ was also proposed. This work will offer a great potential for efficient monitoring of CAP pollution and clinical diagnosing of CAP-related diseases in future.
研究领域:
分析化学
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环境科学
·
药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jiafeng Xi,Xiaojuan Liu,Liang Zhang,Zuwang Zhang,Junchen Zhuo,Ting Du,Yajie Zhang,Jinyou Duan,Hongliang Dong,Jianlong Wang
Within the illustrious and renowned MXene family, Niobium carbide (Nb 2 C) has astounded researchers by exhibiting an extraordinary level of photothermal conversion efficiency and photothermal stability, all while maintaining the possibility of biodegradability. However, the absence of band gaps hindered Nb 2 C as an attractive photoresponsive material for sterilization purposes. To overcome this obstacle, we engineered a Schottky heterojunction in Nb 2 C by introducing Ru and Bi 2 S 3 based on the work function theory to generate an internal electric field (IEF) in Ru@Bi 2 S 3 /Nb 2 C, thus enhancing the photocatalytic sterilization performance by improving the charge transfer efficiency. The strategic doping of Ru also improved the carrier separation as an electron trap, apart from enhancing the light absorption efficiency by exploiting the Localized Surface Plasmon Resonance (LSPR). The results of Ultraviolet Photoelectron Spectroscopy (UPS) and X-ray photoelectron spectroscopy (XPS) divulge the stark difference in work function, which facilitates the directional transfer of carrier and subsequently augments the formation of Schottky heterojunction. This unique structure which is beneficial to the generation of reactive oxygen species (ROS). As a result, the in vitro sterilizing efficiency of the Ru@Bi 2 S 3 /Nb 2 C exceeds 99.87%, and in vivo experiments demonstrated wound healing effects in mouse wound models. These results have confirmed the significant implications of Schottky heterojunction for the use of Nb 2 C in the biomedical sector.
研究领域:
材料科学
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生物医学工程
·
光催化技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Hongkun Li,Qianqian Cai,Yangyang Guan,Zhikang Li,Guifen Jie,Hong Zhou
A multimode sensing and imaging platform based on surface modification strategy of Ru(bpy) 3 2+ doped SiO 2 nanoparticles (RuSiO 2 NPs) was constructed for versatile detection of glutathione (GSH). RuSiO 2 NPs as the luminophore models had outstanding fluorescence (FL) and electrochemiluminescence (ECL) signals. Furthermore, its FL signal could be captured by electrophoresis analyzer, and the ECL signal could be imaged with mobile phone to achieve visualization. So, a unique and convenient multi-mode sensing and imaging platform could be developed based on RuSiO 2 NPs. SiO 2 NPs could realize enrichment of Ru(bpy) 3 2+ based on the nanoconfined effect to achieve signal amplification, and its surface was rich with abundant hydroxyl functional groups, which offered a channel for surface modification. Sulfhydryl modification on the RuSiO 2 NPs was realized by using silane coupling agent, and KMnO 4 was used to in situ generate MnO 2 shell on the surface of RuSiO 2 NPs for quenching its ECL, FL, and colorimetric (CL) signals based on resonance energy transfer (RET). Target GSH could reduce MnO 2 shell to realize recovery of all signals, thus achieving the label-free multimode detection of GSH. Therefore, this work developed a multimode sensing and imaging platform without signal labels or layer-by-layer assembly of electrodes, which had the advantages of simple steps, low cost, and high detection accuracy, showing important application potential in the field of bioanalysis.
研究领域:
生物分析
·
化学传感
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Huanmei Ma,Jianhua Tian,Shuming Bai,Xiaodong Liu,Zhongqiang Shan
In this paper, Pt-Ru/Ni-P/FTO has been designed and fabricated as the counter electrode for dye-sensitized solar cells. The Pt-Ru catalytic layer and Ni-P alloy sublayer are prepared by traditional electrodeposition method and a simple electroless plating method, respectively, and the preparation conditions have been optimized. The scanning electron microscopy (SEM) images show that the Pt-Ru particles are evenly distributed on FTO and Ni-P/FTO substrate. By X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), it is confirmed that the Ni-P amorphous alloy has been formed, and no other compounds involved Ni and P have been formed. The electrochemical measurement results reveal that the Pt-Ru electrode has higher catalytic activity and stability towards tri-iodine reduction reaction than Pt electrode in the organic medium. The Ni-P sublayer deposited on FTO glasses increases the conductivity and light-reflection ability of the counter electrode, and this contributes to lowering the inner resistance of the cell and improving the light utilization efficiency. Through the photovoltaic test, it is confirmed that the energy conversion efficiency of a single DSSC with the optimized Pt-Ru/Ni-P/FTO counter electrode is increased by 29% compared with that of the cell based on the Pt/FTO counter electrode under the same conditions.
研究领域:
材料科学
·
能源科学
✓ 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）