TALANTA
·
2023
·
IF 6.1
Nuo Duan,Yuting Chang,Wenhui Lv,Changxin Li,Chunxia Lu,Zhouping Wang,Shijia Wu
Herein, a SiO 2 @Ag NPs core/shell nanoparticles were synthesized to fabricate a surface-enhanced Raman spectroscopy (SERS) sensor for the simultaneous determination of histamine (HIS) and tyramine (TYR) based on specific aptamer recognition and ratiometric strategy. SiO 2 @Ag NPs with 4-thiosaminophenol (4-ATP) and Nile blue A (NBA) molecules were used as an internal standard (IS) and labeled with aptamers corresponding to HIS and TYR, respectively. Raman reporter molecules ROX and Cy5 labeled complementary DNA (cDNA) were then hybridized with aptamers to form rigid double-stranded DNA. After the HIS and TYR were captured by their aptamers, resulting in the dissociation of cDNA and separated from the SERS substrate. Therefore, the SERS signal intensity at 1503 cm −1 of ROX and 1358 cm −1 of Cy5 tagged on the terminal of cDNA decreased with the concentration of HIS and TYR increasing, while the SERS signal intensity at 1079 cm −1 of 4-APT and 592 cm −1 of NBA on the substrate remain stable. Thus, the concentrations of HIS and TYR can be determined by the I 1503 /I 1079 and I 1358 /I 592 values, respectively. This sensing strategy achieves a lower detection limit of 0.2 ng/mL for HIS and 0.05 ng/mL for TYR, respectively, demonstrating promising applications in sensitive detection of BAs in animal-derived foodstuff.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Xingchen Xie,Ni Wang,Baolong Sun,Li Zhong,Lixiang He,Sridhar Komarneni,Wencheng Hu
Transition metal dichalcogenides (TMDs) as materials for aqueous zinc-ion batteries (ZIBs) have received a lot of interest because of their large theoretical capacity and unique layered structure. However, the sluggish kinetics and inferior cyclic stability limit the usefulness of ZIBs. In the present investigation, the interlayer spacing enlarged MoSe 2 hollow nanospheres comprised of nanosheets with ultrathin shells have been successfully synthesized through a combined strategy of template assistance and anion-exchange reaction. The hierarchical ultrathin nanosheets and hollow structure effectively suppress the agglomeration of pure nanosheets and ameliorate volume fluctuations induced by ion migration during (dis)charging/charging. The interlayer expansion provides good channels for the transport of Zn 2+ ions and speeds up the insertion/extraction of Zn 2+ . In addition, in-situ carbon modification can significantly improve electronic conductivity. Therefore, the electrode prepared from MoSe 2 hollow nanospheres with enlarged interlayer spacing not only exhibits outstanding cycle stability (capacity retention of 94.5% after 1600 cycles) but also exhibits high-rate capability (266.1 mA h g −1 at 0.1 A g −1 and 203.6 mA h g −1 at 3 A g −1 ). This work could provide new insights into the design of cathode using TMDs of hollow structure for Zn 2+ storage.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2023
·
IF 4.4
Imtiaz Ahmad,Mohammed Abohashrh,Abdur Rahim,Sadia Ahmad,Tahir Muhmood,Hongli Wen
The substantial optical features of perovskite quantum dots (PQD) lead to rapid growth in the investigation of their surface and lattice doping for optoelectronic and biochemical sensor advancements. Herein, we have used the surface ligand crafting model of PQD by ammonia and its optimum response to recognise ammonia in the sensing cellulose paper. The PQD with acetyl amine and octanoic acid capped were synthesized and entrapped in zeolites imidazole framework to delay the instant quenching and envisaged response to ammonia with high sensitivity. The hybrid perovskite quantum dots and Zeolite imidazolate framework-8 (PQD@ZIF-8) materials were further immersed in cellulose paper for solid-state sensor fabrication for the detection of ammonia by naked-eye and a Xiaomi Note-5 mobile camera. The ammonia was measured with high sensitivity at ambient conditions, with a detection limit of 16 ppm and a linear detection range of 1 to 500 ppm. This research provides a new platform for designing sensor selectivity and sensitivity, which could be used to further develop fluorescent nanomaterials-based sensors for small molecule detection.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Hongwei Ding,Jingjing Yang,Rui Liu,Yan Li,Xueliang Liu,Xiangyue Wang,Lin Jin
Driven by clean solar energy, photocatalytic technology can effectively degrade organic pollutants and kills pathogenic bacteria. Researchers are always devoted to developing more economical and efficient photocatalysts. In this work, mesoporous TiO 2 nanoparticles (MTN) with controlled diameters (100–200 nm) and large specific surface areas (∼112 m 2 /g) were prepared via a simple sol–gel method. Then, 10 wt% Ag nanocrystals (∼5 nm) were in situ generated in the MTN via solvothermal process, Ti 3+ and oxygen vacancies also been introduced on their surface, thereby leading to a narrowed bandgap (∼2.9 eV) and strong absorption in the visible region. Finally, polydopamine (PDA) was decorated on the surface of Ag/bMTN to further improve their dispersity and photocatalytic activity. The degradation rate of tetracycline and the bactericide rate of E. coli could surpass 90 % and 99 %, which were mainly attributed to the generated O 2 − and the released Ag ions.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Guo Li,Changxue Dong,Genshuai Sun,Mingzhe Li,Xin Cao,Li Zhou,Tao Chen,Fan Yang
Doping is a simple method to modulate the electronic configuration of semiconductor photocatalysts. This study regulated the energy band structure of CdSe nanosheets by Ag doping, which reduced the energy bandwidth of CdSe nanosheets by increasing the carrier density, thereby improving the efficiency of the photocatalytic reduction of uranium by CdSe nanosheets. A 96% removal of U(VI) was achieved by 3% Ag-CdSe nanosheets, which was 1.9 and 1.2 times higher than that of pristine CdSe nanosheets (50%), and 1% Ag-CdSe nanosheets (81%), respectively. Additionally, at pH = 4.0 and a solid–liquid ratio of 0.25, the reduction of uranium by 3% Ag-CdSe nanosheets (765 mg/g) was 2.2 times higher than that of pristine CdSe nanosheets (345.6 mg/g). This study provides a new idea for other efficient photocatalysts designed for uranium reduction.
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2022
·
IF 6.206
Qing Chen,Liyue Zhang,Jinli Zhang,Sania Habib,Guangming Lu,Jinyue Dai,Xiaoqing Liu
It is a subject of great practical significance and challenge to endow marine coatings with both excellent bacterial killing and antifouling properties. In this work, a series of bio-based organic coatings demonstrating high antibacterial rate, strong algae-killing ability and satisfied real-sea fouling resistance were reported. The main-chain type benzoxazine (MCBZ) resins were prepared from the renewable daidzein and furfurylamine, together with polyetheramine, long aliphatic chain primary amines, and paraformaldehyde. By adjusting the amines, the overall performance of synthesized MCBZs could be manipulated. Results indicated that the low surface energy of obtained MCBZ could prevent fouling adhesion, and the synergistic effect of long alkyl chains and daidzein led to the efficient anti-fouling. Notably, besides the low curing temperature of 200 °C, excellent processing property and good substrate adhesion (5.02 MPa), poly (12-fu-MCBZ) also possessed 94.5 % antibacterial rate, 100 % algae-killing ability and excellent real-sea antifouling performance. This work provides us a new strategy to solve the marine biological pollution using renewable raw materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2022
·
IF 4.458
Chenghong Wang,Xian Zhang,Shiquan Liu
Transparent mesoporous silica microspheres were successfully synthesized via sol-gel method followed by calcination. The prepared microspheres consisted of sub-micrometer particles embedded in a gel matrix, which was the main product of the fast hydrolysis and condensation of TEOS in the octylamine-containing medium. The continuous gel network gave light transparency of these microspheres. The microspheres were statically immersed in rhodamine 6 G (R6G) dye solutions with different concentrations. The guest R6G molecules loaded in the microspheres exhibited significantly enhanced fluorescence performance compared with the correspondent dye solutions. The localization and dispersion of dye molecules in the nanopores of microspheres reduced the aggregation of dye molecules which otherwise quenched the luminescence. A comparative study on the loading of the same dye within another transparent and an opaque silica gel with larger pore sizes indicated that the transparency and the smaller pore size of the transparent microspheres explained its larger fluorescence enhancement effect.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Zige Tai,Guotai Sun,Ting Wang,Zhiyu Fang,Xiaoxiong Hou,Fan Li,Yuqian Qiu,Qian Ye,Lichao Jia,Hongqiang Wang
Owing to their intrinsic and pronounced charge carrier transport when facing the formidable challenge of inhibiting severe surface charge recombination, one-dimensional (1D) CdS nanostructures are promising for advancing high-yield hydrogen production . We herein demonstrate an efficient strategy of boosting interfacial carrier separation by heterostructuring 1D CdS with defective WS 2 . This process yields solid covalent interfaces for high flux carrier transfer that differ distinctively from those reported structures with physical contacts. As a nonnoble cocatalyst, WS 2 can accept photogenerated electrons from CdS, and the sulfur vacancies existing at its edges can effectively trap electrons as active sites for H 2 evolution. Moreover, due to its strong negative property, the H + from the aqueous solution can gather around WS 2 . WS 2 possesses a lower reaction barrier than CdS, which expedites the kinetic process for the reaction. The optimized sample exhibits a high photocatalytic H 2 evolution rate of 183.4 µmol/h (10 mg photocatalyst), which is as far as we know among the top in the records for CdS-based photocatalysts. We believe this present work will be inspiring in addressing the interfacial charge carrier transfer by constructing covalent heterointerfaces.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Xiaobo Hu,Yanqiao Xu,Jiancheng Wang,Jiaxin Ma,Lianjun Wang,Wan Jiang
All-inorganic CsPbX 3 (X=Cl, Br, I) perovskite nanocrystals (NCs) exhibit attractive optoelectronic properties for lighting and displays application but suffer from the lack of profound insights into their reaction kinetics. Herein, a modified ligand-assisted reprecipitation (LARP) method was developed to synthesize high-quality CsPbBr 3 NCs by utilizing oleic acid (OA) and n-octylamine (OTAm) as surface ligands, and the effect of Cs/Pb ratio, precursors and ligands concentration on the structure, morphology and fluorescence properties was systematically investigated. The monodisperse CsPbBr 3 NCs with cubic shape and average particle size of 13.7 nm are obtained by optimizing the reaction parameters. Appropriately increasing the Cs/Pb ratio and precursors concentration to 0.5 and 1.0 mM are favorable for forming a more complete crystal structure with lower defect states density, which can significantly enhance the PL intensity. Notably, the surface defect states of CsPbBr 3 NCs are effectively passivated by the coordinated OA and OTAm ligands, and the maximum photoluminescence quantum yield (PLQY) can reach to 85.2%. Importantly, the effective synthesis of high-quality CsPbBr 3 NCs can be amplified up to 50 times of reaction volume after finely optimizing the reaction parameters. Based on a facile anion exchange process, the CsPbX 3 NCs with variable halogen composition exhibit tunable emission of 443.3∼649.1 nm and a wide color gamut of 117% NTSC standard. This work provides profound sights on the reaction kinetics of perovskite NCs, and further promotes its practical application in optoelectronic field.
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 31
·11210-11217
·
IF 8.307
Weijun Zhu,Zhuohan Lin,Xue Zhang,Wei Wang,Yan Li
Magic-size clusters (MSCs) are molecular materials with unique properties at the border between molecules and solids, providing important insights into the nanocrystal formation process. However, the synthesis of multicomponent alloy MSCs in a single-ensemble form remains challenging due to their tiny size and difficult doping control. Herein, for the first time, we successfully synthesized alloy ZnxCd13−xSe13 MSCs (x = 1–12) with a unique sharp absorption peak at 352 nm by cation exchange between Cd2+ ions and pre-synthesized (ZnSe)13 MSCs in a diamine solution at room temperature. The experimental results show that the use of diamines is crucial to the formation of stable ZnxCd13−xSe13 MSCs, which may be attributed to two amine groups that can coordinate to the surface of MSCs simultaneously. Limited by the robust interaction between diamine ligands and MSCs, the partial cation exchange results in the formation of alloy ZnxCd13−xSe13 MSCs. In contrast, complete cation exchange occurs in a monoamine solution, giving (CdSe)34 MSCs. Besides, a lower reaction temperature and a higher concentration of diamine favor the formation of ZnxCd13−xSe13 MSCs. Our study provides an important basis for further understanding of the transformation of MSCs and a new approach to the controllable synthesis of alloyed MSCs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Yin Yang,Renling Lu,Wu Chen,Ping Mei,Lu Lai
Three amphiphilic carbon dots (CDs, C 6 -CDs, C 8 -CDs, and C 12 -CDs) were synthesized and first adopted as a corrosion inhibitor for mild steel. The inhibition behavior of amphiphilic CDs for N80 steel in hydrochloric acid solution was studied via weight loss tests, surface characterization , and electrochemical measurements. Results confirmed that they could protect N80 steel effectively; the longer the carbon chain was, the better the inhibition effect was. Specifically, the inhibition efficiency of C 12 -CDs reached 92.9 % at 150 mg/L. Moreover, due to the fluorescence characteristics of CDs, the changes in adsorption film during corrosion could be directly observed under UV light . A dense adsorption film was formed through the electrostatic interaction with CDs and the metal surface . Long carbon chains formed a hydrophobic layer on the surface of N80 to isolate the corrosive medium.
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Wei Ma,Binghua Yao,Wen Zhang,Yinglong Chen
In this manuscript, hierarchical MoS 2 nanotubes (NTs) with different aspect ratio (length/diameter) were successfully synthesized via one-step solvothermal method for piezocatalytic applications. SEM indicated that the constructed MoS 2 NTs-13 had perfect uniformity while TEM demonstrated the hollow interior. Such hierarchical tubular structures consisting of cross-linked MoS 2 single-/few-layered nanosheets featured large specific surface area (85.83 m 2 g −1 ) and high porosity. The MoS 2 NTs-13 with high aspect ratio exhibited the optimum piezocatalytic performance, achieving 93.26% degradation efficiency for sulfamethazine (SMZ, 20 mg/L) within 10 min, leading to a high first-order rate constant of 0.2486 min −1 , which was 2.48 times higher than that of MoS 2 NTs-10. Piezoelectrochemical measurements suggested that MoS 2 NTs-13 displayed stronger piezoelectric current response and lower charge transfer resistance. The radical trapping experiments and electron spin resonance analysis confirmed that hydroxyl radicals ( OH) and superoxide radicals ( O 2 – ) were the main reactive oxygen species (ROS) for SMZ degradation. Furthermore, six degradation intermediates of SMZ were identified and two possible degradation pathways were proposed. This work provides design strategies for optimizing structural stability of ultrathin two-dimensional nanomaterials, and offers a highly efficient method for typical antibiotics removal.
✓ 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）