ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2020
·Vol. 646
·期 20
·1688-1695
·
IF 1.24
Shuangsheng Cheng,YuanDong Wu,Dajiang Mei,Shaoguo Wen,Thomas Doert
Four alkali metal bismuth sulfates, NaBi(SO 4 ) 2 · H 2 O ( 1 ) and ABi(SO 4 ) 2 [A = K ( 2 ), Rb ( 3 ), Cs ( 4 )], were successfully synthesized by hydrothermal methods. The crystal structure of 1 features a three-dimensional tunnel framework constructed by BiO 9 tri-capped trigonal prisms and SO 4 tetrahedra interconnected via common corners and edges. Compound 2 exhibits a two-dimensional 2 ∞ [Bi(SO 4 ) 2 ] – double-layered structure, assembled by one-dimensional 1 ∞ [BiS(1)O 4 ] + chains which are linked via S(2)O 4 2– tetrahedra. The isostructural compounds 3 and 4 possess a two-dimensional layered structure, and the layers being composed by BiO 8 square antiprism and SO 4 tetrahedra. The alkali metal cations are located between the layers or in the tunnels of the structures, respectively. The differences in the crystal structures of the title compounds can mainly be attributed to the different sizes of the alkali metal cations and their different coordination environments. Thermogravimetric analysis evidence that compound 1 losses one equivalent of water at 120 °C whereas the anhydrous compounds 2 – 4 are stable up to about 450, 575, and 578 °C, respectively. The solid-state UV/Vis/NIR diffuse reflectance spectra indicate bandgaps of approximately 4.48, 4.43, 3.98, and 3.96 eV for compounds 1 – 4 , respectively.
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高影响因子
RSC Advances
·
2024
·Vol. 14
·期 11
·7517-7527
·
IF 3.9
Yihong Yang,Genlan Ye,Xiaozhong Qiu
Intraoperative bleeding is a pivotal factor in the initiation of early recurrence and tumor metastasis following breast cancer excision. Distinct advantages are conferred upon postoperative breast cancer treatment through the utilization of locally administered implant therapies. This study devised a novel 3D sponge implant containing cisplatin-loaded chitosan–calcium alginate MPs capable of exerting combined chemotherapy and hemostasis effects. This innovative local drug-delivery implant absorbed blood and residual tumor cells post-tumor resection. Furthermore, the cisplatin-loaded chitosan–calcium alginate MPs sustainably targeted and eliminated cancer cells, thereby diminishing the risk of local recurrence and distant metastasis. This hydrogel material can also contribute to breast reconstruction, indicating the potential application of the 3D sponge in drug delivery for breast cancer treatment.
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PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2019
·Vol. 103
·期 2
·1018-1026
·
IF 3.094
Xuefang Luo,Ziyang Hou,Tianliang Zhou,Rong-Jun Xie
Mn 4+ -activated fluoride red-emitting narrow-band phosphors have been successfully used in wide color-gamut white LEDs for liquid crystal display (LCD) backlights. However, highly concentrated and toxic HF is usually used in their synthesis, causing environment and safety issues. In this work, we proposed a HF-free green method, that is, using NH 4 F/HCl instead of HF, to synthesize a series of A 2 X F 6 :Mn 4+ ( A = K, Na, Rb, Cs; X = Si, Ge, Ti) phosphors. The microstructure, photoluminescence (PL) properties, thermal quenching, and applications of the synthesized phosphors were investigated. Using the proposed approach, the phosphors generally showed a pure phase, a particle size ranging from 5 to 45 μm, and some characteristic sharp emission lines of Mn 4+ in the red spectral range. The internal quantum efficiency was varied in a broad range of 69%-94% under the 460 nm excitation, depending on the composition of the fluoride host. Among these compositions, K 2 X F 6 :Mn 4+ ( X = Ge and Ti) phosphors even had a similar external quantum efficiency (>60%) with commercial ones. By combining K 2 GeF 6 :Mn 4+ (narrow-band red) and β -sialon:Eu 2+ (narrow-band green) with a blue LED, a white light-emitting diode (wLED) backlight with a color gamut of 87.7% National Television System Committee Standard, color temperature of 8423 K, and a luminous efficacy of 110.8 lm/W was demonstrated. These results indicate that the synthetic method proposed in this work is universal for preparing highly efficient fluoride phosphors used in wLEDs.
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FOOD CHEMISTRY
·
2021
·
IF 7.514
Junxin Zhao,Maomao Ma,Xianghui Yan,Guohua Zhang,Jiaheng Xia,Guibing Zeng,Wenran Tian,Xianliang Bao,Zheling Zeng,Ping Yu,Deming Gong
A novel lipase from Bacillus licheniformis NCU CS-5 was expressed in different Escherichia coli cells. The recombinant enzyme achieved a high activity (161.74 U/mL) with protein concentration of 0.27 mg/mL under optimal conditions at the large-scale expression of 12 h. The recombinant lipase showed optimal activity at 40 ℃ and pH 10.0, and maintained more than 80% relative activity after 96 h of incubation at pH 9.0–10.0. This typical alkaline lipase was activated under medium temperature conditions (30 and 45 ℃ for 96 h). The lipase exhibited a degree of adaptability in various organic solvents and metal ions, and showed high specificity towards triglycerides with short and medium chain fatty acids. Among different substrates, the lipase showed the strongest binding affinity towards p NPP ( K m = 0.674 mM, V max = 950.196 μM/min). In the experiments of its application in enhancing fatty acids flavor release for low-fat cheeses, the lipase was found to hydrolyze cheeses and mainly increase the contents of butyric acid, hexanoic acid, caprylic acid and decanoic acid. The results from NMR and GC provided the possibility of enhancing fatty acids flavor released from low-fat cheeses by the lipolysis method.
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PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 31
·e52720
·
IF 3.057
Xiaolong Wang,Weiguang Gong,Xin Meng,Chenyang Li,Jin Gao
Biobased flame retardant (FR) has attracted great interest owing to its green and degradable properties similar to polylactic acid (PLA). In this work, with ammonium polyphosphate (APP) as the core, chitosan (CS) and halloysite (HNT) as the shell, a biobased FR (APP@CS@HNT) with a core-shell structure was prepared through the self-assembly method. The flame retardancy of PLA composites has been improved with the addition of the FR (APP@CS@HNT). With the loading of 17 wt% APP@CS@HNT, the PLA composite shows a high limiting oxygen index value (29.4%) and achieves vertical burning (UL-94) test V0 rating. Compared with pure PLA, the cone calorimetry test indicates that the peak heat release rate (PHRR) and total heat release decrease from 299.88 to 152.29 kW/m 2 and from 102.0 to 71.2 MJ/m 2 , respectively. The addition of APP@CS@HNT can also improve the smoke suppression performance of PLA composites. Such enhanced flame retardancy is mainly attributed to APP@CS@HNT prompting the PLA matrix to produce more continuous and denser carbon layers at a lower temperature to form physical barriers.
研究领域:
材料科学
·
高分子科学
·
消防安全工程
·
纳米技术
·
环境科学
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高影响因子
ACS Sensors
·
2025
·
IF 9.1
Kai Wang,Jia-Wei Li,Rui Guo,Rong Hu,Zhao-Cheng Liu,Hao-Xiang Jiang
Detecting glutathione S-transferases (GSTs) in cardiovascular diseases is crucial for understanding oxidative stress and its role in disease progression, but it remains challenging due to GST’s dynamic expression and interactions with other cellular components. In this study, the CS-GST optical probe was developed to monitor GST activity. The probe demonstrated unique optical properties, with fluorescence intensity increasing and photoacoustic signals decreasing upon interacting with GST. It showed excellent sensitivity and selectivity, with strong correlations between fluorescence and GST concentration. In cellular and in vivo experiments, CS-GST effectively tracked GST activity in foam cell models and mice, showing potential as a biomarker for cardiovascular diseases. Overall, CS-GST is a highly sensitive, selective, and stable tool with promising applications in cardiovascular disease research, offering a noninvasive method for real-time monitoring of GST activity.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Nuanfei Zhu,Kuijing Yuan,Dinghui Xiong,Fengxiang Ai,Kun Zeng,Biying Zhao,Zhen Zhang,Hongjun Zhao
Dietary intake is an important exposure pathway of environmental bisphenols including bisphenol S (BPS, a typical emerging organic pollutant). However, available data on the occurrence and risk assessment of BPS in food samples are limited due to the lack of high-throughput analytical methods. Herein, based on H 2 O 2 inducing fluorescence turn-off signals, a sensitive and high-throughput fluorescence enzyme-linked immunosorbent assay (FELISA) was developed for BPS investigation in beverages. In this system, the fluorescence of copper nanoclusters in ZIF-8 (CuNCs-CS@ZIF-8) could be quenched with the presence of H 2 O 2 owing to the strong oxidation, being served as signal amplification in FELISA. Meanwhile, the aggregation-induced emission (AIE) fluorescence enhancement of CuNCs-CS through the conformational locking of ZIF-8 provided an effective strategy to overcome the intrinsic limitations of FELISA including high background, serious fluorescence quenching in the detection of real samples. Thus, the integration of AIE building blocks into porous ZIF-8 showed obvious advantages in enhancing the analytical performance of FELISA. Under optimized conditions, satisfactory results with good accuracy were achieved in this proposed FELISA, which was applied for the systematic investigation of BPS in foods and further health risk assessments. The results after 100 beverages analysis displayed an average detection frequency of 55%, and the detected concentration of BPS ranged from below the limit of quantification (LOQ) to 12.08 ng/mL with a mean value of 1.717 ng/mL. Besides, the estimated daily intake (EDI) of BPS was calculated to be 0.05449–4.483 ng/kg-bw/day, in which milk–tea drinks contributed to the majority of BPS daily intake (mean EDI = 4.483 ng/kg-bw/day). And the hazard quotient (HQ) according to EDI values indicated that BPS exposure in beverages might not make a considerable impact on human health.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Sihang Ji,Lijia Zhao,Chen Chen,Jialong Zhao,Jin Wang,Jinju Zheng,Xi Yuan
The development of quasi-two-dimensional (quasi-2D) perovskite films with high photoluminescence quantum yield (PL QY) and robust environmental stability remains a critical challenge for advanced optoelectronic applications. Herein, we report an A/B-site synergistic doping strategy by incorporating multivalent Cs + (A-site) and Cd 2+ (B-site) ions into quasi-2D BA 2 MA n-1 Pb n Br 3n+1 films, significantly enhancing their optical quality and structural stability. Notably, the bimetallic ion-doped films achieve a high PL QY of up to 90 % at 490 nm, along with excellent homogeneous phase stability (the phase separation of quasi-2D films emitting at 435 nm and 490 nm is suppressed even after 1 h and 10 h). Moreover, co-doping with multivalent Cs + and Cd 2+ ions induces a significant reduction in both grain size (10–15 nm) and surface roughness (∼1 nm), while endowing the quasi-2D films with a high exciton binding energy (>300 meV). The variable temperature PL spectra reveal the band-edge radiative dynamics, which originate from the thermal competition between exciton and trap-mediated recombination. The heat-induced electron-phonon interaction enhances the proportion of trap-mediated recombination, leading to an increase in the average PL lifetime. The A/B-site synergistic engineering provides a novel approach for improving the PL performance and photostability of quasi-2D perovskite films, paving the way toward high-performance light-emitting diodes, lasers, and other ptoelectronic devices based on the luminescent layer.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jiahao Wu,Huiping Zeng,Fanhao Meng,Yating Zhao,Dong Li,Jie Zhang
The widespread occurrence of antibiotic residues in aquatic environments has become a major water pollution concern, posing ecological risks and accelerating antimicrobial resistance. Metal–phenolic networks (MPNs), eco-friendly functional materials formed via coordination between natural polyphenols and metal ions, exhibit broad application potential in environmental remediation. In this study, a novel composite adsorbent (FTN@CS/PVA) was fabricated by uniformly immobilizing MPN structures within a three-dimensional porous chitosan/polyvinyl alcohol (CS/PVA) gel beads through the in situ coordination of Fe 3+ and tannic acid (TA). The resulting material exhibited excellent adsorption performance toward tetracycline hydrochloride (TCH), achieving a maximum adsorption capacity of 95.5 mg/g at 298 K and pH 3. The adsorption process followed the pseudo-second-order kinetic model (R 2 = 0.9963) and the Redlich–Peterson isotherm model (R 2 = 0.9736). The primary adsorption mechanisms involved synergistic physicochemical interactions, including hydrogen bonding, Fe O coordination, and electron transfer. Notably, FTN@CS/PVA also exhibited high adsorption efficiency toward various dyes and maintained excellent competitive and selective adsorption performance even in a TC–MB binary system. Furthermore, FTN@CS/PVA retained high TCH removal efficiency in real water matrices (lake water, domestic wastewater, and secondary effluent from a wastewater treatment plant) and in complex systems containing various coexisting anions or humic acid (HA), demonstrating superior interference resistance and environmental adaptability. In addition, FTN@CS/PVA demonstrated structural stability and excellent regenerability, maintaining over 80 % of its adsorption capacity after three adsorption–desorption cycles in the presence of humic acid (HA). This study provides a novel design strategy and theoretical foundation for developing highly stable and selective MPN-based composite adsorbents for the efficient removal of antibiotic contaminants.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2026
·
IF 2.4
Ziyu Zhuang,Manman Zhang,Dandan Gao,Wolfgang Voigt,Dongdong Li,Haitao Feng
Previously, the formation of a stable adduct 2H3BO3·3CsCl (BC) was observed in CsCl(aq) but not in RbCl(aq). The phase equilibria of the H3BO3 + RbCl + CsCl + H2O system were studied to assess the potential for selective separation of Cs from Rb. Solubility isotherms were determined experimentally. Appropriate liquid composition ranges were preselected using modeling with ISLEC’s equilibrium software. Schreinemakers’ wet solid method, XRD, Raman and IR spectra, Roozeboom’s plots, and SEM-EDS were applied to identify the four phase regions H3BO3, 2H3BO3·3(Cs,Rb)Cl (Bss), (Rb,Cs)Cl, and (Cs,Rb)Cl. Notably, in the presence of RbCl, the BC phase incorporates Rb+, forming a substitutional solid solution, Bss, which inhibits selective separation of CsCl. Roozeboom’s plot analysis revealed that RbCl exhibits higher solubility in the Bss phase compared to the (Cs,Rb)Cl solid solution. The separation factor βCs/Rb between the solid Bss phase and the corresponding solution was 2.0, significantly lower than that of (Cs,Rb)Cl (βCs/Rb = 9.5) in the ternary system without H3BO3. This indicates a stronger coordination between CsCl and H3BO3 relative to that of RbCl in the ternary system without H3BO3. The above understanding provides new strategies designing novel B–OH compounds to enhance Cs/Rb separation efficiency in aqueous systems.
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DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 33
·11555-11561
·
IF 4.39
Jinhui Wang,Xinyuan Zhang,Fei Liang,Zhanggui Hu,Yicheng Wu
Birefringent crystals with strong anisotropy are important components in modern optical devices. The newly discovered planar π-conjugated cyanurate group (HxC3N3O3)x−3 (x = 0–3) has been demonstrated as an effective functional motif for improving birefringence in the ultraviolet region. Here, single co-crystals of alkali halide cyanurates, RbBr·(H3C3N3O3) (I), RbI·(H3C3N3O3) (II), and CsBr·(H3C3N3O3) (III) were synthesized by the ethanol solution method, and NaBr·(H3C3N3O3) (IV) was obtained via the solvent-drop grinding method. These four co-crystals feature a planar (H3C3N3O3) arrangement and exhibit wide band gaps (> 4.90 eV), tunable birefringence (Δnexp ∼ 0.124–0.256), and high thermal stability (156 °C–349 °C). In addition, first principles calculations were also carried out to evaluate the relationship between molecule density, spatial arrangement and optical birefringence, and suggested a great tailoring effect of the alkali metal and halogen species on regulating the optical anisotropy of co-crystal cyanurates.
研究领域:
材料科学
·
晶体工程
·
光学材料
·
无机化学
·
功能材料
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Jingxuan Zhao,Hongxu Liu,Yuchao Qi,Ruijia Wang,Ziwei Lv,Yang Yu,Shulin Sun
With the rapid development of industry, the problem of water pollution has become increasingly serious. Though there are many separation materials available to solve this problem, how to separate multiple wastewater at the same time remains a challenge. Hydrogel coating is suitable for use in the field of oil–water separation, and chitosan (CS) is effective in removing anionic dyes. Therefore, the preparation of separation membranes with hydrogel coating containing CS and dopamine (DA) can effectively separate oil–water emulsion and anionic dye wastewater. In this paper, DA@CNTs/CS hydrogel coating was prepared by sequentially coating Cu 2+ , DA@CNTs, Cu 2+ and CS on the surface of polyvinylidene fluoride (PVDF) membrane by deposition of self-assembly, which enhanced the hydrophilicity of the membrane and made it highly underwater oleophobic and antifouling. The alkali treated PVDF membrane contained a large amount of –OH, Cu 2+ , which formed coordination bonds with –OH, CS, and DA and the hydrogel coating could be stably loaded on the membrane. In addition, the introduction of rigid CNTs effectively improved the performance of the modified membrane under extreme conditions such as high pH and high salt concentration. PVDF-DA@CNTs/CS membrane had an ideal pure water flux (PWF) of 1470 (L·m −2 ·h −1 ) and the separation efficiency of 99.7 % for anionic dye and 99.4 % for oil–water emulsion. The contaminant on the membrane surface can be quickly removed by washing with DI water. The overall performance of the membrane is also maintained at a very high level of long-term filtration of wastewater. In summary, this study provides a new approach to complex wastewater treatment technology.
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