APPLIED SURFACE SCIENCE
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2023
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IF 6.7
Chunwen Chang,Qiang Xue,Rong Wang,Zeyu Liu,Yao Liu,Lin He,Fei Liu,Haijiao Xie
Development of an efficient monitoring technology for rapid detection of toxic Pb(Ⅱ) ion in water environments is extremely important. Here, a novel and highly sensitive sensor was prepared using one-step calcination technique, based on Bi 2 O 3 nanoparticles and carbonized metal–organic framework (MOF) nanocomposite. Scanning electron microscopy, transmission electron microscopy, contact angle and X-ray photoelectron spectroscopy characterization methods were used to analyze the morphology and structure of the prepared materials. Based on the electrical double-layer capacitance theory and Raman spectroscopy, changes to the active sites of different modified materials were investigated. Besides, differential charge densities and adsorption energies of the different modified materials in Zr-O clusters were calculated using density functional theory (DFT). A Bi 2 O 3 and carbonized UIO-66-NH 2 (Bi 2 O 3 /C-UIO-66-NH 2 ) -modified glassy carbon electrode was used to detect Pb(Ⅱ) by differential pulse anodic stripping voltammetry. Under optimal experimental parameters, the developed electrochemical sensor has a wide linear range (2–130 μg/L) and a low detection limit (0.05 μg/L). Meanwhile, the sensor has excellent stability, repeatability, and anti-interference properties and has been successfully applied to detect Pb(Ⅱ) in actual water samples. The results of this paper show that our developed sensor an efficient and rapid sensor technology for monitoring lead in water environment.
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高影响因子
Energy Technology
·
2023
·Vol. 11
·期 4
·2201438
·
IF 3.8
Qi Zhang,Sijia Wang,Ye Liu,Mengting Wang,Rentian Chen,Zongyuan Zhu,Xiangyun Qiu,Shoudong Xu,Tao Wei
Benefiting from employing solid composite electrolytes (SCEs), all-solid-state lithium-ion batteries (ASSLBs) are recognized to occupy with high energy density and safety. Herein, a polymer-based SCE membrane (SCE-66@67) with core–shell structured metal–organic frameworks (MOFs) (UiO-66-NH 2 @67) as the fillers is presented. The SCE has combined the advantages of the two kinds of MOFs and shows a satisfying ionic conductivity (2.09 × 10 −4 S cm −1 at 60 °C) and a wide electrochemical stability window of ≈5.0 V. The full cell (Li/SCE-66@67/LiFePO 4 ) also maintains a high capacity of 120.9 mAh g −1 at 3 C. This research might help to promote the development of future SCEs for ASSLBs.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Yumin Chen,Weiwei Cheng,Yuling Yang,Di Wu,Yan Zhang,Xiaozhi Tang
A versatile Surface-enhanced Raman Spectroscopy (SERS) aptasensor was fabricated for ultrasensitive and stable aflatoxin B1 (AFB1) detection using complementary DNA strands (cDNA) modified Fe 3 O 4 @UiO-66-NH 2 as capture probe and aptamer modified Au@ 4-MBA@AgNPs as signal probe . The surface of the Fe 3 O 4 beads was functionalized with UiO-66-NH 2 to improve the surface area and content of reactive amino groups for stable immobilization of cDNA and capture of more signal probes. Raman tag (4-mercaptobenzoic acid, 4-MBA) embedded Au@AgNPs nanoparticles (Au@4-MBA@AgNPs) was used as signal probes to achieve strong SERS intensity and protect the tag molecules from external interference. When no AFB1 existed, a strong SERS intensity of the signal probe was observed due to the DNA hybridization reaction between the capture and signal probe. While, the addition of AFB1 led to the dissociation of signal probes from the capture probes, leading to a decreased Raman intensity . As a result, a low limit of detection of 1.47 × 10 −7 ng/mL and wide linear range from 10 −6 to 10 2 ng/mL were obtained for determination of AFB1 based on the fabricated aptasensor. Moreover, an excellent selectivity and desirable recoveries from 94.3 % to 103.3 % in real maize samples were obtained, demonstrating the fabricated SERS aptasensor is promising in practical applications.
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APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Jiaqian Zhang,Jinjuan Xue,Zhenbo Wu,Mingxin Wang,Yiting Lv,Zhaoxia Chen,Shuaishuai Ma
In this work, we fabricated a multifunctional membrane by in-situ growth of tetrakis (4-carboxyphenyl) porphyrin-doped UiO-66-NH 2 on stainless steel mesh (SSM), denoted as TCPP/UiO@SSM, for gravity-driven oil–water/seawater mixtures separation and visible-light-driven bacterial inactivation. The as-prepared membrane exhibited high permeation flux (up to 46312 ± 1583 L m −2 h −1 ) as well as separation efficiency (above 98%) towards various oil–water/seawater mixtures separation, which resulted from the rough hierarchical structure and the inherent super-wettability. In particular, the membrane can effectively deal with viscous oil fouling to achieve a desired flux recovery ratio (FRR) after separating crude oil from water, attributing to the self-cleaning property originated from the photo-active TCPP/UiO. Furthermore, the as-fabricated TCPP/UiO@SSM has the ability to efficiently inactivate typical Gram bacteria (6 log units) in water under visible light . Both the oil–water separation and photocatalytic sterilization performances of TCPP/UiO@SSM are superior to UiO@SSM. The doping of photosensitive TCPP in UiO-66-NH 2 not only improved the hydrophilicity, but also enhanced the photocatalytic activity by creating a Z-scheme heterojunction to promote the separation of charge carriers and amplify the photothermal effect. This work provides a new platform for water disinfection and the treatment of oily wastewater containing viscous oil phase based on UiO metal–organic framework.
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高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Haopeng Jiang,Xiaohui Yu,Jinhe Li,Lele Wang,Weikang Wang,Chunxia Wu,Liyong Tang,Qinqin Liu
Herein, a NH 2 -MIL-125(Ti)@Ag@AgCl (NM@Ag@AgCl) stacked core–shell heterojunction with Z-scheme carrier transfer mechanism was developed to fulfil the goal of synchronous reactions of CO 2 reduction and H 2 O oxidation. In detail, the NM@Ag@AgCl was obtained by in-situ loading the AgCl as the shell-inorganic semiconductor on the octahedral NM as the core-organic semiconductor, followed by in-situ transforming part of the AgCl shell into the plasmonic Ag nanoparticles using a photo-reduction method. As a result, the interface effects of core–shell architecture majorized by the Ag electronic mediator can favor the transmission of photogenerated carriers and reduce electron transport resistance; while the plasmonic Ag mediated Z-scheme mode with a giant internal electronic field provided a strong driving force to recombine the carriers with weak redox ability, reserving the carrier with strong redox ability on the NH 2 -MIL-125-core and AgCl-shell for the simultaneous reactions. The CO and H 2 O 2 yields of the optimal NM@Ag@AgCl were 6.02 and 5.43 μmol⋅g −1 ⋅h −1 , which were 3.31 and 4.02 times that of the NM, respectively. This study furnishes a novel thread for the design of core–shell organic–inorganic heterojunction with high interfacial charge transfer for realizing the simultaneous reactions.
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BIOSENSORS & BIOELECTRONICS
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2022
·
IF 12.545
Xiaohai Yan,Gengan Du,Hong Chen,Qiannan Zhao,Qi Guo,Jianlong Wang,Zhouli Wang,Wei Song,Qinglin Sheng,Yane Luo,Yahong Yuan,Tianli Yue
Patulin (PAT) is an unsaturated lactone mycotoxin primarily produced by Penicillium expansum and Aspergillus clavatus . Given the potential health risks and economic losses associated with PAT, the rapid detection of PAT using fluorescent aptasensors is of significant importance in evaluating food safety. However, it easily increases the cost and complexity caused by signal labeling. We combined TCPP/BDC-NH 2 mixed ligands functionalized Zr metal–organic frameworks (Zr-MOF mix ) and terminated three-stranded DNA gates (ttsDNA gates) to fabricate a label-free fluorescent aptasensor for PAT detection. The Zr-MOF mix system was synthesized via a one-pot strategy and could be used to address the problem of pore size limitation and increase the loading amounts of dyes. TtsDNA gate was integrated into the Zr-MOF mix system to control the release of dyes, exhibiting a high signal-to-background ratio. The single-stranded aptamer region in ttsDNA gate situated away from the surface of the Zr-MOF mix , resulting in a natural release of dyes in the absence of PAT. While binding to PAT resulted in target-induced conformational changes that helped form the hairpin structure of the aptamer. This structure hindered the release of dyes from the pores of Zr-MOF mix , thus reducing the fluorescence signals intensity. The stimuli-responsive DNA-gated material provides a platform for PAT analysis under conditions of a low limit of detection (0.871 pg/mL). Furthermore, the excellent specificity and anti-interference of the fluorescent aptasensor make the system suitable for the analysis of apple juice samples. This label-free strategy is cheaper and simper compared with labeled detection, especially for the development of multi-target-detection.
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高影响因子
Journal of Water Process Engineering
·
2022
·
IF 7.34
Mengjie Fu,Chun Wang,Guangwu Sun,Changfa Xiao,Ying Ding
3D flower-like UiO-66-NH 2 @ZiF-8 (UZ) nanoparticles have porous structural properties and multifunctional functional groups exposed on the surface, which provide significant advantages in improving compatibility with polymers and exceptional molecular sieve performance. Poly( p -phenylene terephthamide) PPTA is an acid/alkali resistant porous membrane material. However, the preparation of highly permeable and selective nanofiltration (NF) membranes is still a challenging problem due to the low permeability of PPTA NF membranes. Therefore, in this study, PPTA/UiO-66-NH 2 @ZiF-8 (PUZ) membranes were prepared using spacer spray-assisted interfacial polymerization. It was investigated that the effects of different additions of 3D flower-like UZ nanoparticles on the physicochemical properties and structure of PUZ membranes. The results showed that the polyamide structures with different morphologies were formed on the PUZ membranes surface by depositing 3D flower-like UZ nanoparticles at a spraying frequency of 12 min −1 . When 1.3 g/L of 3D flower-like UZ nanoparticles were interval sprayed, the PUZ4 membranes surface showed a unique doughnut-like structure and featured tubular and doughnut-like interconnections. PUZ4 membranes exhibited 4.4 times higher permeance and maintained excellent dye rejection (methylene blue dye permeance up to 58.23 L/m 2 ∙h∙MPa and methylene blue dye rejection of 99.60 %) compared to pristine PPTA NF membranes (methylene blue dye permeance up to 13.25 L/m 2 ∙h∙MPa and methylene blue dye rejection of 92.10 %). In addition, the modified PUZ4 membranes had a great antifouling performance with a recovery ratio of 99.43 % for more than 6 cycles and a high rejection rate of 98.51 % at 0.1 MPa.
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Surfaces and Interfaces
·
2022
·
IF 6.137
Chong Wang,Wendong Xing,Yilin Wu,Yunhui Li,Yongsheng Yan,Jianwei Zhu
Sulfamethoxazole (SMX) is a widespread organic contaminant that threatens the ecological environment and human health. Therefore, it is of great significance to develop an effective method for selective separation of SMX from the aquatic environments. Herein, a novel in-situ synthesis of CNT/UiO-66-NH 2 based molecularly imprinted nanocomposite membranes (CUMIMs) is designed for selective removal of SMX. The CNT/UiO-66-NH 2 nanocomposite is prepared through in-situ growth of MOFs in the presence of CNT . The CNT around the MOFs can effectively avoid the aggregation of CNT/UiO-66-NH 2 nanocomposite and introduce unique properties into the PVDF/PVA membrane, which simultaneously benefit in both hydrophilicity and water flux. More importantly, the well dispersed CNT/UiO-66-NH 2 nanocomposite with huge specific in the membrane can facilitate the selectivity toward SMX. The selective separation performance of CUMIMs is evaluated by static adsorption and permeselectivity experiments. The results showed that the synthesized CUMIMs afford an ideal rebinding selectivity (α SMX/SMM = 2.01, α SMX/TC = 4.34, and α SMX/CIP = 4.65) and permselectivity factor (β = 2.15) toward SMX. The presented strategy on CUMIMs fabrication would potentially enrich the application of CNT/MOFs-based molecularly imprinted nanocomposite membrane in the field of contaminant separation.
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高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 2
·1017-1034
·
IF 6.123
Sun Lijian,Qian Xueren,An Xianhui
Cellulose-based bioplastics with degradability and remarkable mechanical performance have recently attracted increasing attention. As a high-performance material, cellulose-based bioplastics have a strong potential to replace synthetic plastic substrates in many applications. However, its poor shielding performance to UV light limit its application. In this work, transparent and UV-blocking MIL-68(In)-NH 2 @cellulose bioplastic (M(In)CBP) sheets are fabricated via a featured processing method, i.e., cellulose liquefaction, rapid solidification, in-situ synthesis and hot-press drying. The as-obtained functional bioplastic sheet (M(In)CBP1) exhibits high visible-light transparence (74.7% a 600 nm) and the existence of MIL-68(In)-NH 2 allows superior UV-blocking ability (below 400 nm, transmittance was under 4%). The M(In)CBP sheets show high photostability even after continuous UV irradiation (365 nm) for over 12 h. The superior UV-shielding performance is attributed to the uniform distribution and the high UV absorbance of MIL-68(In)-NH 2 in M(In)CBP sheets. High resistance to penetration by aqueous/nonaqueous liquids was proved. Moreover, the M(In)CBP sheets also show excellent mechanical properties and thermal stability. The present work designed a UV-blocking bioplastic constructed from cellulose and MIL-68(In)-NH 2 , which is potential candidates to replace synthetic plastics in many advanced applications such as a UV protection layer for electronic products, or useful as packaging materials to prevent food spoilage. Graphical abstract
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高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2023
·
IF 10.9
Huan Yao,Ruifeng Zhang,Yu Wen,Yue Liu,Gang Yu,Zhi-Hui Xie
Metal-organic framework [MOF, i.e., NH 2 -MIL-53(Al)] modified TiO 2 (NMT) composite photoanodes were successfully prepared by hydrothermal synthesis and were used for the photoelectrochemical cathodic protection (PECCP) of nickel-plated magnesium alloy (Mg/Ni). Results showed that the synthesis temperature significantly impacted the morphology and PECCP performance of the NMT photoanodes. The NMT@150 photoanode prepared at a reaction temperature of 150 °C exhibited the best PECCP performance and produced a current density of 1980 μA cm −2 under visible light irradiation, which was 19.8 times higher than that of a single TiO 2 photoanode. The composite photoanode could polarize the open circuit potential of the coupled Mg/Ni electrode to -876 mV and remain relatively stable within 35 h. XPS and EPR tests showed that a Z -scheme heterojunction was formed between the NH 2 -MIL-53(Al) and TiO 2 nanotubes, allowing the photogenerated electrons to accumulate mainly on the conduction band of NH 2 -MIL-53(Al). The heterojunction greatly promoted the separation and transfer of photogenerated electron-hole in the NMT composite photoanode, significantly enhancing the PECCP performance for Mg/Ni.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2023
·
IF 6.1
Xiaobo Zhang,Zhiru Li,Lili Yang,Bing Hu,Qiuyue Zheng,Jiang Man,Jijuan Cao
The sensitive and accurate detection of ochratoxin A (OTA) is crucial for public health due to its high toxicity. Herein, using Au nanoparticle (NP)-attached CdS/UiO-66-NH2 heterostructures as photoactive materials, a photoelectrochemical (PEC) aptasensor was presented for the ultrasensitive assay of OTA based on a competitive displacement reaction triggering the trans-cleavage ability of CRISPR/Cas12a. In this sensing strategy, methylene blue-labeled single-stranded DNA (MB-ssDNA) was immobilized on the Au NPs/CdS/UiO-66-NH2 electrode to accelerate the separation of the photogenerated carrier, thus producing a significantly increased PEC response. In the presence of OTA, it specifically bound with the aptamer (Apt) and resulted in the release of the activation chain, triggering the trans-cleavage characteristics of CRISPR/Cas12a. MB-ssDNA was cut randomly on the electrode surface to convert the PEC signal from the “on” to the “off” state, thereby achieving a quantitative and accurate detection of OTA. The CRISPR/Cas12a-derived PEC aptasensor exhibited excellent sensitivity and specificity, with a linear range from 100 to 50 ng/mL and a detection limit of 38 fg/mL. Overall, the proposed aptasensor could provide a rapid, accurate, and sensitive method for the determination of OTA in actual samples.
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高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Liangyan Shao,Zongxue Yu,Xiuhui Li,Xuyang Li,Haojie Zeng,Xiaofang Feng
A one-pot strategy for the preparation of NH 2 -MIL-88B(Fe)/CDs composite was successfully developed via a simple solvothermal synthesis method. NH 2 -MIL-88B(Fe)/CDs composites were characterized by XRD, FT-IR, SEM, TEM, XPS, UV–vis DRS, PL, transient photocurrent response and Mott-Schottky plots. The synthesized NH 2 -MIL-88B(Fe)/CDs composites exhibit stronger photocatalytic activity than the original NH 2 -MIL-88B(Fe) in both photoreduction of Cr(VI) and photodegradation of MB. This is mainly because on the one hand, there is an interaction at the interface between CDs and NH 2 -MIL-88B(Fe), and on the other hand, CDs in the composite as local electron acceptors can effectively enhance charge transfer and inhibit electron-hole recombination. The experimental results show that the pH value greatly affects the reduction efficiency of Cr(VI) over photocatalyst, and the addition of hole trapping agent is beneficial to photocatalytic reduction. Moreover, we have proposed the possible photocatalytic mechanism on composites through trapping experiments of active species. Importantly, cycling experiments have also revealed that NH 2 -MIL-88B(Fe)/CDs photocatalysts have good chemical stability and reusability, and have broad industrial application prospects.
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