MOLECULES
·
2023
·Vol. 28
·期 5
·2024
·
IF 4.6
Jiawei Wang,Yanli Chen,Yunfeng Zhao,Chongyan Yao,Yibo Liu,Xizheng Liu
Lithium-air batteries (LABs) have attracted extensive attention due to their ultra-high energy density. At present, most LABs are operated in pure oxygen (O2) since carbon dioxide (CO2) under ambient air will participate in the battery reaction and generate an irreversible by-product of lithium carbonate (Li2CO3), which will seriously affect the performance of the battery. Here, to solve this problem, we propose to prepare a CO2capture membrane (CCM) by loading activated carbon encapsulated with lithium hydroxide (LiOH@AC) onto activated carbon fiber felt (ACFF). The effect of the LiOH@AC loading amount on ACFF has been carefully investigated, and CCM has an ultra-high CO2adsorption performance (137 cm3g−1) and excellent O2transmission performance by loading 80 wt% LiOH@AC onto ACFF. The optimized CCM is further applied as a paster on the outside of the LAB. As a result, the specific capacity performance of LAB displays a sharp increase from 27,948 to 36,252 mAh g−1, and the cycle time is extended from 220 h to 310 h operating in a 4% CO2concentration environment. The concept of carbon capture paster opens a simple and direct way for LABs operating in the atmosphere.Keywords:lithium-air battery;CO2capture;long-cycle;carbon capture paster
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
OPTICAL ENGINEERING
·
2022
·
IF 1.352
Min Zhang,Zhihai Liu,Yiwei Ma,Yu Zhang,Yaxun Zhang,Xinghua Yang,Jianzhong Zhang,Tao Geng,Libo Yuan
We propose a gelatin-coated long period fiber grating humidity sensor which has temperature compensation for low-error humidity detection. The output spectrum shows three resonance dips. The dip caused by gelatin-coated grating has humidity sensitivity of 0.09 nm/%RH and temperature sensitivity of 0.15 nm/°C. Another two dips caused by PDMS-coated grating have almost no response to humidity, which can be used for temperature compensation under low temperature and high temperature range, respectively. We come up with a coefficient matrix and experimentally obtain the humidity and temperature sensitivity of both resonance dips, thus temperature and humidity can be demodulated.
研究领域:
光学传感
·
材料科学
✓ 已验证
DOI
高影响因子
OPTICS EXPRESS
·
2025
·Vol. 33
·期 1
·1359-1370
·
IF 3.3
Huiyuan Zhang,Mingyu Li,Mingyu Li,Qiu-Shun Li,Qiu-Shun Li,Xiujing Yan,Yubo Xia,Yuxia Song,Tuo Chen,Wen-Fei Dong,Jian-Jun He
In this paper, poly(diallyldimethylammonium chloride)(PDDA)/poly(sodium styrene sulfonate)(PSS) nanomembranes were deposited on the surface of long-period fiber gratings (LPFG) using the electrostatic layer-by-layer (LBL) assembly method, and the effect of NaCl on the modulation of LPFG double peaks by PDDA/PSS nanomembranes was investigated. The principle behind the emergence of double peaks was first explored using coupled mode theory, revealing that changes in the mode effective refractive index(RI) occur as the number of nanomembrane layers increases. The experimental results showed that under the conditions of PDDA with NaCl/PSS without NaCl and PDDA without NaCl/PSS with NaCl, double peaks do not appear in the spectra of LPFG as the number of thin film layers increases. In contrast, highly sensitive double peaks appear in the spectra of LPFG when both PDDA and PSS contain NaCl. Additionally, the range of these double peaks was explored. It was shown that the sensitivity of LPFG to the nanomembrane reached a maximum at 79-81 bilayers, with a sensitivity of 37.8 nm/bilayer, and the appearance of double peaks was consistent with the theoretical simulation. The findings of this study will be applied to the modification of LPFG surface biofunctional membranes and the highly sensitive detection of biochemical substances.
研究领域:
光学传感
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材料科学
·
生物医学工程
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产品关联
DOI
PubMed
高影响因子
OPTICAL FIBER TECHNOLOGY
·
2021
·
IF 2.53
Shuang Zhou,Yuyang Yan,Meiduan Fan,Chengcheng Xu,Yunlong Wang,Di Shen,Yunqi Liu,Longfei Ma,Xiaolan Sun,Alan R. Kost
A glucose sensor based on a helical long-period grating (HLPG) coupling to a high-order cladding mode is demonstrated, which is composed of an optical fiber with the fiber surface modified by poly (4-vinylphenylboronic acid). The sensor has a linear response to glucose (0.18 ~ 3 mg/mL) with a sensitivity of 1.115 nm·(mg/mL) −1 at pH 7.4 and 3.259 nm·(mg/mL) −1 at pH 9, respectively.
研究领域:
生物医学工程
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光学传感
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2021
·Vol. 146
·期 11
·3617-3622
·
IF 4.616
Wenjie Li,Yinping Miao,Chengwei Fei,Hongmin Zhang,Bin Li,Kailiang Zhang
An enhanced photothermal signal detection method based on graphene oxide (GO) integrated long period fiber grating (LPFG) for on-site sodium copper chlorophyllin (SCC) quantification is proposed. SCC, as a porphyrin compound, can be photonically excited to induce a stronger photothermal effect. GO offers superior molecular adsorption and thermal conductivity properties; depositing it on the LPFG surface significantly improves the sensitivity and detection efficiency of the SCC photothermal signal, when irradiated with a 405 nm laser. The experimental results showed improved performance compared with those from uncoated LPFG, with a sensitivity of 0.0587 dB (mg L−1)−1 and a limit of detection (LOD) of 0.17 mg kg−1, which is also an order of magnitude lower than that of traditional high-performance liquid chromatography. The proposed method has potential applications in the fields of real-time food safety monitoring, environmental pollutant detection, and disease diagnosis.
研究领域:
光学传感
·
材料科学
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食品安全
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环境监测
·
生物医学诊断
✓ 已验证
DOI
PubMed
高影响因子
OPTICAL FIBER TECHNOLOGY
·
2024
·
IF 2.6
Lei Liang,Hao Yan,Aochi Jia,Haiyan Zhang,Menghao Li,Kaiyu Chai,Jiawei Xi,Shichang Li,Dingyi Feng
Accurate detection of carbon dioxide (CO 2 ) is of great significance to environmental protection. In this study, a simple, highly sensitive, and linearity CO 2 sensors is successfully proposed. Furthermore, for the first time, the sensor was demonstrated by electrospinning a layer of polyether sulfone (PES) nanofiber film wrapped onto a micro-tapered long period fiber grating (MT-LPFG). Given that CO 2 molecules effortlessly permeate the mesh pores of the electrospun PES films, modulations in both the refractive index (RI) and volume of PES films can be induced, consequently leading to alterations in the resonant wavelength of the grating. The experimental results demonstrate the exceptional performance of the MT-LPFG sensor utilizing PES films, showcasing a significant response within a range of (1.99 %-10 %). This sensor exhibits a sensitivity of 0.068 nm/%, linearity of 0.994, and an impressively low CO 2 detection limit of 1.2 %. Moreover, the sensor exhibits exceptional recovery properties and demonstrates clear differentiation between nitrogen (N 2 ) and CO 2 . This cost-effective sensor holds significant economic value and holds promise for widespread application in industrial processes and commercialization.
研究领域:
环境科学
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材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
OPTICS AND LASER TECHNOLOGY
·
2024
·
IF 4.6
Ku Liang,Tian Tian,Yiwei Ma,Jinhui Cui,Weimin Sun,Tao Geng
A high-sensitivity assembled long-period grating fiber (A-LPFG) ultraviolet sensor based on double-layer material film (equivalent refractive index theory) is proposed and validated. This sensor is composed of A-LPFG coated with zinc oxide (ZnO) and propylene glycol film. Among them, the propylene glycol wrapped around the outer layer enhances the response of the sensor to the external environment base on the theory of equivalent refractive index (ERI). Moreover, due to the generation of photogenerated carriers, ultraviolet (UV) sensitivity of A-LPFG coated with ZnO film is significantly improved. The experimental results show that the designed ultraviolet long period fiber grating (UV-LPFG) has a sensitivity of −1.212 nm/(mW/cm 2 ) for UV sensing, with response times of 0.24 s (rise time) and 0.48 s (decay time). In addition, this sensor also has advantages such as high sensitivity, low cost, and good practicality, demonstrating excellent performance characteristics.
研究领域:
光学传感器
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材料科学
·
光纤技术
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2018
·
IF 5.667
Xiang Qin,Wenlin Feng,Xiaozhan Yang,Jianwei Wei,Guojia Huang
A molybdenum sulfide/citric acid composite membrane-coated long period fiber grating (LPFG) sensor was demonstrated and applied to detect the trace hydrogen sulfide gas. The sensor was fabricated by growing molybdenum sulfide/citric acid composite film on the surface of optical fiber grating by using the sol-gel and dip-coating techniques. The sensor measures the hydrogen sulfide concentration by monitoring the molecular adsorption-induced resonant wavelength shift of LPFG in near infrared (∼1555 nm) region. Experimental results show that with the increasing concentration of hydrogen sulfide, the transmission spectrum appears blue shift with time response of 89 s. In addition, a high sensitivity of 10.52 pm/ppm and a good linear relationship are achieved within a measurement range from 0 to 70 ppm. Furthermore, there is an excellent selectivity for H 2 S, which has also been confirmed by the surface adsorption energy results of molybdenum sulfide with five common gases in the air (H 2 S, N 2 , CO 2 , O 2 and Ar) based on the density functional theory calculations. The proposed sensor has an excellent detection limit of hydrogen sulfide which is as low as 0.5 ppm. This sensor has the advantages of simple structure, easy manufacture, high sensitivity and low cost, and can be used in hydrogen sulfide gas sensing places such as factories, sewers, and so on.
研究领域:
传感技术
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材料科学
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环境监测
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yan Huang,Wenfu Lin,Ziruo Zhang,Zhenru Li,Tiansheng Huang,Jie Li,Li-Peng Sun,Bai-Ou Guan
Volatile organic compound (VOC) sensors have recently been developed with sensitive coating layers to improve their performance. However, there are inevitable trade-offs in the performance of the VOC sensors with sensitive layers. It remains challenge to achieve higher sensitivity, faster response time, working at room temperature and better selectivity at the same time for real-world applications. In this work, we demonstrated a novel photothermal-assisted gas sensor using a microfiber long period grating (LPG) modified with zeolitic imidazolate framework-90 (ZIF-90)/graphene oxide (GO) for enhanced VOC acetone sensing. The GO-isolated ZIF-90 exhibited ultralow conductivity and high porosity, which significantly promoted light-to-heat energy conversion by trapping thermal and minimizing heat loss. Besides, the natural porosity and ultrahigh surface area of the ZIF-90 showed superior molecular adsorption making it a good choice for the acetone-sensitive layer. Based on the porous ZIF-90/GO nanohybrid and photothermal effects, the proposed sensor showed improved performance compared without adding laser towards acetone, with the sensitivity of 26.1 pm/ppm and low limit of detection of 760 ppb. Moreover, the proposed photothermal technology enhanced the response time down to 410 ms without sacrificing sensitivity. Thus, our proposed sensor constitutes a promising platform for effective acetone sensing systems that can be used for environmental monitoring and industry.
研究领域:
材料科学
·
传感器技术
·
环境监测
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2022
·
IF 6.556
Qiu-Shun Li,Yan Yang,Yong-Dong Du,Lei Cai,Yao-Hong Ma,Jun-Hui Yang,Mingyu Li,Qing-Jun Meng,Qing-Ai Liu,Wen-Fei Dong
Long period fiber gratings (LPFGs) have special advantages in the detection of salt concentrations due to small volume, corrosion resistance and immunity to electromagnetic interference. However, it is very difficult to distinguish low-concentration salt solutions with usual LPFGs owing to the poor sensitivity. In this paper, the detection capability of the LPFG to low-concentration salt solutions was significantly improved by assembling salt-containing poly (diallyldimethylammonium chloride) (PDDA) and salt-containing poly (sodium- p -styrenesulfonate) (PSS). Experimental results showed that, the responsive wavelength range of the LPFG was remarkably broadened in low-concentration salt solutions after assembling nanofilms . The suitable detection range of the PDDA/PSS films coated LPFG for salt concentrations was 0–3%. In such a range, the average refractive index sensitivity and the average salinity sensitivity of the LPFG was as high as 29545.9 nm/RIU and 52.2 nm/% respectively. Compared with the LPFG without nanofilms, the discrimination ability of the PDDA/PSS films coated LPFG to 0–3% salt solutions increased by 568 times. The analysis demonstrated that PDDA and salt in the assembly solutions played a pivotal role in the above effects. The proposed sensor has extensive application prospects in the monitoring of salt concentration in many fields such as seawater , food processing, fermentation process , etc.
研究领域:
光学传感
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IEEE SENSORS JOURNAL
·
2025
·
IF 4.5
Hao Liu,Lingling Li,Hao Ke,Hua Tu,Yuheng Zuo,Yi Zhou,Jiangnan Zhang,Zhao Li,Ai Zhou
A long-period fiber grating (LPFG) sensor functionalized with titanium dioxide-chitosan/poly(acrylic acid) (TiO2-CS/PAA) composite film was proposed for detecting lead ion (Pb2+) concentration. The sensor was fabricated by sequentially coating TiO2-CS/PAA composite functionalized film on the LPFG surface via the Layer-by-Layer self-assembly (LbL) method. The CS/PAA layer acts as a general sensing film, with the abundant amino (-NH2) and hydroxyl (-OH) groups on chitosan providing sufficient chelation sites for Pb2+. Incorporation of PAA significantly improves both adsorption efficiency and mechanical stability. The sensitivity of the sensor is further enhanced by inserting a TiO2 layer with a high refractive index (RI), which can reduce the RI difference between the fiber and the external environment. Experimental results demonstrated that the resonance wavelength of LPFG exhibited a blue shift with the increase of Pb2+ concentration, achieving a maximum sensitivity of 36.5 nm/μM, a limit of detection (LOD) of 9.3 nM (0.00193 mg/L), and a rapid response time of approximately 10 minutes, along with high selectivity toward Pb2+. The proposed sensor features simple fabrication, excellent selectivity, and robust stability, indicating significant potential for Pb2+ monitoring applications.
研究领域:
生物传感
·
环境监测
·
分析化学
·
纳米材料
·
光学检测
✓ 已验证
产品关联
DOI
高影响因子
LAB ON A CHIP
·
2018
·Vol. 18
·期 11
·1621-1632
·
IF 5.995
Nianbing Zhong,Ming Chen,Zhengkun Wang,Xin Xin,Bingxin Li
We demonstrate that a lab-on-a-chip device (hereafter termed a photochemical phenol sensor) that integrates a photocatalytic long-period fiber grating (PLPFG), fiber Bragg grating (FBG), polymer membrane, ultraviolet (UV) visible light, and microchannels can be exploited to selectively detect phenol in aqueous solutions. The novel PLPFG consisted of a thinned long-period fiber grating (LPFG) and a UV-visible-light-driven Er3+:YAlO3/SiO2/TiO2 (EYST) coating. The polymer membrane with high phenol permselectivity was synthesized using PEBA2533 doped with β-cyclodextrin and was wrapped around the EYST surface, thus forming a microchannel between the membrane and PLPFG to enable the injection and outflow of standard analytes. Subsequently, a Z-shaped microchannel in a PMMA plate was fabricated and employed as a storage chamber for phenol analytes. To realize the EYST photocatalyst, UV-visible-light was irradiated using a tapered UV optical array. Thereafter, to eliminate the effect of temperature on the device, a FBG sensor as a temperature-compensating element was presented. To demonstrate the sensitivity and selectivity of the proposed device, we investigated the effects of the EYST coating's thickness, phenol-based analytes and temperature on the sensitivity and accuracy of the device for measuring phenol concentrations. The results of our present study suggest that the photochemical sensor is effective over a wide range of concentrations (7.5 μg L−1 to 100 mg L−1), pH values (2.0 to 14.0), and temperatures (10 to 48 °C) for selective detection of phenol in aqueous solutions. Thus, the proposed lab-on-a-chip device may be useful for accurate determination of phenol concentrations in real samples.
研究领域:
环境科学
·
光学工程
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）