ACS Omega
·
2020
·
IF 2.87
Shujuan Guo,Yanjie Zhang,Yuansong Ye,Jinzhe Song,Mengru Li
Synthesis of a Ti-incorporated zeolite using a simple and economical method has recently become a focus of attention. The direct hydrothermal synthesis of Ti-MWW is most commonly applied; however, it is challenging to perform and exhibits low titanium utilization. An innovative strategy of synthesizing Ti-MWW is proposed in the present study by simply treating the ERB-1 precursor of an MWW-type boron silicate with a H2TiF6/HNO3 solution. This significantly shortens the Ti grafting process from 5 days to only a few hours and reduces the use of the structure-directing agent hexamethyleneimine (HMI); furthermore, no extraframework Ti is observed in the precursor, indicating good atomic economy. Typically, a piperidine (PI)-treated sample Ti-MWW2–1-PI exhibits a higher conversion (76.6%) than the original Ti-MWW (44.8%) in the epoxidation of 1-hexene. X-ray diffraction (XRD), inductively coupled plasma (ICP), and transmission electron microscopy (TEM) techniques are used to explain in detail the probable mechanism underlying the incorporation of Ti species into the MWW framework. X-ray photoelectron spectroscopy (XPS) is employed to study the coordinate state of the Ti and F species in the samples after treatment with a piperidine solution. This method can be applied to synthesize other kinds of lamellar-structured zeolites with heteroatoms.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Junli Nie,Gangqiang Zhu,Weibin Zhang,Jianzhi Gao,Peng Zhong,Xiaotao Xie,Yu Huang,Mirabbos Hojamberdiev
Flower-like n -type CeO 2-δ is hybridized with p -type β-Bi 2 O 3 nanoparticles to design a novel β-Bi 2 O 3 /CeO 2-δ p - n heterojunction photocatalyst via a thermal treatment process of Bi/Ce(CO 3 )(OH) precursor. The synthesized β-Bi 2 O 3 /CeO 2-δ exhibits a remarkable enhancement in NO removal and significant suppression of toxic intermediates nitrogen dioxide (NO 2 ) under visible light irradiation. The superior photocatalytic activity of β-Bi 2 O 3 /CeO 2-δ for NO removal is mainly derived from the synergistic effects of the oxygen vacancies (OVs) and p-n heterojunction. The OVs not only enhance the visible light utilization and boost the separation of electron-hole pairs but also improve the adsorption and activation of NO and O 2 . Particularly, the p-n heterojunction is beneficial for the interfacial migration of photogenerated charge carriers. Electron spin resonance (ESR) and trapping experiment reveal that the synergistic effects of OVs and p-n heterojunction can induce the generation of more active species. The electrochemical measurements and density-functional theory (DFT) calculations in-depth confirm that both p-n heterojunction and OVs can accelerate the interfacial charge transfer, resulting in the deep oxidation of reactants. Therefore, the flower-like β-Bi 2 O 3 /CeO 2-δ p-n heterojunction photocatalyst exhibits an advanced photocatalytic activity for deep NO removal and a suppressed NO 2 generation. In addition, monitoring the reaction products by in situ Fourier transform infrared spectrum (FTIR) further validates that the main products of nitrates are formed during the photocatalytic process. This work demonstrates a straightforward approach for construction of p-n heterojunction photocatalysts, which can enhance the effective photocatalytic activity and stability for NO removal.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2017
·Vol. 134
·期 31
·45163
·
IF 1.86
Wanping Cai,Xiangyan Ma,Jiahong Guo,Xing Peng,Sai Zhang,Zhoutong Qiu,Jie Ying,Jikui Wang
Poly( p -styrene sulfonate- co -acrylic acid sodium) (PSA) from the copolymerization of acrylic acid sodium and p -styrene sulfonate monomers were used to dope poly(3,4-ethylene dioxythiophene) (PEDOT) to generate PEDOT–PSA antistatic dispersions. Compared to those of the PEDOT–poly( p -styrene sulfonate sodium) (PSS), the physical and electrical properties of the PEDOT–PSA conductive liquids were much better. The PEDOT–PSA films possessed a better water resistance without a decrease in the conductivity. The sheet resistance of the PEDOT–PSA–poly(ethylene terephthalate) (PET) films was about 1.5 × 10 4 Ω/sq with a 100 nm thickness, the same as the PEDOT–PSS–PET films. The transmittance of the PEDOT–PSA–PET films exceeded 88%. Furthermore, the environmental dispersity of the PEDOT–PSA antistatic dispersion was apparently improved by the dopant PSA so that the stability was extraordinarily promoted. Meanwhile, the water resistances of the PEDOT–PSA–PET and PEDOT–PSA films were also enhanced. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45163.
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POLYMER
·
2026
·
IF 5.1
Yu Huang,Zhennan Wang,Guoping Zhu,Zongmin Zhu,Xuebao Lin
In this study, a novel DOPO-based phosphorus/nitrogen/sulfur-containing flame retardant, TPD, was successfully synthesized and incorporated into epoxy resin (EP) at a low loading of only 4 wt%. The results showed that EP/4% TPD achieved a UL-94 V-0 rating, and its limiting oxygen index (LOI) increased from 21.8% to 30.5%, demonstrating excellent flame-retardant efficiency. Cone calorimetry revealed that the peak heat release rate (pHRR), total heat release (THR), total smoke production (TSP), and peak CO 2 release were reduced by 29.2%, 37.5%, 19.8%, and 23.0%, respectively, compared with neat EP, indicating a reduced fire hazard. Meanwhile, the incorporation of TPD enhanced the tensile strength and impact strength of EP by 10.6% and 76.4%, respectively. Furthermore, EP/4% TPD exhibited outstanding ultraviolet shielding performance in the 200–420 nm range while maintaining a certain level of visible light transmittance, along with improved resistance to acid and alkali and enhanced electrical insulation properties. These results demonstrate that TPD is a highly efficient multifunctional additive that simultaneously provides flame retardancy, mechanical reinforcement and toughening, UV shielding, corrosion resistance, and improved electrical insulation, offering a promising new approach for the development of high-performance epoxy resin composites.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Junsheng Guo,Wenzong Xu,Tao Yan,Jiayan Zhang,Xiaoyu Guo,Lingfeng Wang,Julan Liu
Polyvinyl alcohol (PVA) is a promising biodegradable polymer, but its widespread application is critically constrained by inherent flammability, limited UV resistance, and the mechanical compromises often incurred by conventional flame-retardant modifications. To address these challenges, a novel bio-based phosphorus‑nitrogen synergistic flame retardant (DPP) was developed from pyridoxal phosphate via a facile Schiff base condensation and P H addition route. This well-designed DPP was efficiently incorporated into PVA via a green melt blending process, yielding composites that achieved a simultaneous enhancement of multiple properties. With a 10 wt% DPP loading, the composite exhibited exceptional flame retardancy, achieving a limiting oxygen index (LOI) of 30.5%, a UL-94 V-0 rating, along with a 63.2% reduction in its peak heat release rate (PHRR) and a 32.7% decrease in total heat release (THR). Additionally, it provided outstanding UV shielding performance, with an ultraviolet protection factor (UPF) of 362 and over 99.7% blocking of both UVA and UVB radiation. Impressively, its tensile strength was enhanced to 25.2 MPa, thus overcoming the common performance trade-off. This multifunctionality stems from DPP's well-orchestrated molecular design: it operates through a vapor- and condensed-phase synergistic flame-retardant mechanism and intrinsic UV absorption, while its strong interfacial hydrogen bonding with PVA constructs a physical crosslinking network, underpinning the concurrent mechanical enhancement. This work presents a strategy for fabricating sustainable, high-performance, multifunctional PVA materials. The PVA/DPP composites obtained via this strategy show promising potential for advanced applications such as outdoor protection and safe electronics packaging.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2026
·
IF 6.6
Haitao Zhang,Chaofeng Chen,Dayu Wang,Yiwei Huang,Yang Liu,Zhiyuan Wang,Furui Fu,Hongyu Wang,Senjie Shi,Yijin Li,Jianchun Zeng,Caiping Shen,Chudan Zhong,Xiaozhou Liu,Jinlun Chen,Jie Li,Shufen Liu,Jin Huang,Yirong Zeng,Wenjun Feng
As an emerging environmental contaminant, N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine-quinone (6PPD-Q) poses a potential threat to public health. However, the potential link between 6PPD-Q exposure and bone health remains largely unexplored. This study aims to systematically investigate the toxic effects of 6PPD-Q on bone metabolism and elucidate the underlying mechanisms by integrating transcriptomic sequencing, network toxicology, single-cell RNA, Molecular docking, molecular dynamics with both in vivo and in vitro experiments. Integrative analysis converged on mitophagy as a central mechanism in 6PPD-Q-induced osteoporosis, with single-cell sequencing identifying bone marrow-derived mesenchymal stem cells (BMSCs) as the key cell type and revealing CX43, MMP2, PDGFRB, and FYN as the principal targets. Molecular docking and MD simulations confirmed the targeted binding of 6PPD-Q to CX43. RNA-seq analysis of rat tibiae validated the differential expression of CX43 and the critical role of mitophagy. Both in vivo and in vitro experiments demonstrated that 6PPD-Q-induced bone loss was associated with the downregulation of CX43 and concomitant mitophagy dysregulation. In conclusion, this study elucidates that 6PPD-Q induces bone loss was associated with the downregulation of CX43 and concomitant mitophagy dysregulation. Our work establishes a comprehensive mechanistic framework for 6PPD-Q-induced bone damage and offers novel insights for future research into its bone toxicity. The 1 or 10 mg/kg dose used in this study, although higher than the typical environmental exposure level, is consistent with the effects observed in cadmium exposure and is close to the 8 mg/kg dose used in studies on mouse bone toxicity. Additionally, the 5 ng/mL concentration of 6PPD-Q used in the in vitro experiments is comparable to the concentration detected in freshwater, indicating its environmental relevance.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Lei Yang,Zifei Wei,Zihan Guo,Mengfang Chen,Jingchun Yan,Linbo Qian,Lu Han,Jing Li,Mingyue Gu
CoFe 2 O 4 /hydrochar composites (FeCo@HC) were synthesized via a facile one-step hydrothermal method and utilized to activate peroxymonosulfate (PMS) for simultaneous degradation of monochlorobenzene (MCB) and p-chloroaniline (PCA). Additionally, the effects of humic acid , Cl - , HCO 3 - , H 2 PO 4 -, HPO 4 2- and water matrices were investigated and degradation pathways of MCB and PCA were proposed. The removal efficiencies of MCB and PCA were higher in FeCo@HC140–10/PMS system obtained under hydrothermal temperature of 140 °C than FeCo@HC180–10/PMS and FeCo@HC220–10/PMS systems obtained under higher temperatures. Radical species (i.e., SO 4 • - , •OH) and nonradical pathways (i.e., 1 O 2 , Fe (IV)/Co (IV) and electron transfer through surface FeCo@HC140–10/PMS* complex) co-occurred in the FeCo@HC140–10/PMS system, while radical and nonradical pathways were dominant in degrading MCB and PCA respectively. The surface functional groups (i.e., C-OH and C O) and Fe/Co redox cycles played crucial roles in the PMS activation . MCB degradation was significantly inhibited in the mixed MCB/PCA solution over that in the single MCB solution, whereas PCA degradation was slightly promoted in the mixed MCB/PCA solution. These findings are significant for the provision of a low-cost and environmentally-benign synthesis of bimetal-hydrochar composites and more detailed understanding of the related mechanisms on PMS activation for simultaneous removal of the mixed contaminants in groundwater.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Shibo Wang,Fengxian Cao,Pengxu Chen,Ruowei He,Anling Tong,Zhang Lan,Peng Gao,Weihai Sun,Jihuai Wu
Combined with the superb moisture and thermal stability of two-dimensional (2D) perovskites and the excellent photoelectronic features of three-dimensional (3D) perovskites, building 3D/2D structure has been proved to be an auspicious way to improve both power conversion efficiency (PCE) and durability of perovskite solar cells (PSCs). In this work, cyclohexylammonium bromide (CMABr) as p-dopant is introduced into hole transport layer (HTL) to form 3D/2D heterostructure perovskite bilayer. It is confirmed that the formation of 2D perovskite interlayer comes from the reaction between the excess PbI 2 on the surface of 3D perovskite and CMABr on the bottom of HTL, which served as moisture barrier layer to enhance the device stability. The exotic CMA + and Br − ions could insert the ABX 3 perovskite lattice to compensate A-site cation and X-site vacancies, which reduced the undesirable non-radiative recombination centers. Owing to the p-type doping, the more uniform morphology, down-shifted energy levels and improved electrical properties were obtained. Consequently, the CMABr-doped PSCs based on triple-cation (Cs + , MA + and FA + ) perovskite and double-cation (MA + and FA + ) perovskite produce maximum PCEs of 21.78 % and 23.56 %, respectively, as well as remarkable long-term device stability. The results demonstrate a novel pathway to construct 3D/2D stacking structure for highly efficient PSCs with decent stability.
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JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Wenjuan Wang,Yanfang Huang,Guihong Han,Bingbing Liu,Shengpeng Su,Yizhuang Wang,Yubin Xue
Environmentally hazardous P(V), Mo(VI) and W(VI) generated oxyanions exist widely in the waste liquid of nonferrous hydrometallurgy . In this work, Fe-MOF material was simply prepared via solvothermal synthesis and then used as an adsorbent to remove P(V), Mo(VI) and W(VI) oxyanions from hydrometallurgical waste liquid . Several important parameters, including solution pH, oxyanion concentration, contact time, adsorbent amount, temperature and coexistent heavy metal ions , were systematically investigated. The results demonstrate that adsorption process was almost pH-independent over a broad range of pH 3.0–10.0. The adsorption efficiency was strongly associated with the chemical species of oxyanions. The higher polymerisation degree of oxyanions was more favourable for removal efficiency. Additionally, the maximum removal efficiencies for P(V), Mo(VI) and W(VI) oxyanions under optimum conditions were approximately 100%. Furthermore, the adsorption kinetics and isotherms of oxyanions on the adsorbent separately belonged to the pseudo-second-order and Langmuir isotherm models. XPS analysis revealed that inner-sphere complexation played a dominant role in the adsorption removal process. Fe-MOFs with pH-independent properties, abundant binding sites and high stability are prospective adsorbents for treating waste liquids in the hydrometallurgical industry.
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高影响因子
Journal of Materials Chemistry C
·
2021
·Vol. 10
·期 2
·716-725
·
IF 7.393
Jinpeng Li,Junhao Jiang,Qilin Cheng,Zhongkai Cui,Xiaoyun Liu,Peiyuan Zuo,Qixin Zhuang
Polymeric dielectrics with high-temperature resilience are of critical importance in developing advanced electrostatic capacitors. Poly(p-phenylene benzobisoxazole) (PBO) is a polymer with excellent thermal stability. However, poor processability and low intrinsic dielectric constant restrict its application in high-performance dielectrics. In this study, PBO is synthesized by the precursor method, and the polymer films are prepared via solution casting which is more convenient than the traditional processing method. Moreover, a hierarchically structured one-dimensional Al2O3@NaNbO3 is designed and introduced into the PBO matrix. Due to the high aspect ratio and the unique structure of Al2O3@NaNbO3, the dielectric properties and breakdown strength of the nanocomposite have been substantially increased. The nanocomposite filled with 3 vol% Al2O3@NaNbO3 possesses the highest breakdown strength of 286 kV mm−1 while maintaining a high dielectric constant of 6.68 and a low dielectric loss of 0.035 at 1 kHz, and the energy density increased to 1.64 J cm−3 at 250 kV mm−1 (≈200% higher than that of pure PBO). In addition, the dielectric properties of 3 vol% Al2O3@NaNbO3–PBO exhibit excellent thermal stability from 25 to 250 °C which is attributed to the thermal resistance of both PBO and Al2O3@NaNbO3. This work provides a promising way to fabricate polymeric dielectrics for use in extreme environments.
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高影响因子
WATER RESEARCH
·
2023
·
IF 12.8
Yuan Gao,Yun Luo,Zhao Pan,Zhu Zeng,Wenxia Fan,Jingyu Hu,Zhong Zhang,Jinxing Ma,Yang Zhou,Jun Ma
As a widely used feed additives, p-arsanilic acid (p-AsA) frequently detected in the environment poses serious threats to aquatic ecology and water security due to its potential in releasing more toxic inorganic arsenic. In this work, the efficiency of Fe(II)/sulfite, Fe(II)/PDS and Fe(II)/PMS systems in p-AsA degradation and simultaneous arsenic removal was comparatively investigated for the first time. Efficient p-AsA abatement was achieved in theses Fe-based systems, while notable discrepancy in total arsenic removal was observed under identical acidic condition. By using chemical probing method, quenching experiments, isotopically labeled water experiments, p-AsA degradation was ascribed to the combined contribution of high-valent Fe(IV) and SO 4 •− in these Fe(II)-based system. In particular, the relative contribution of Fe(IV) and SO 4 •− in the Fe(II)/sulfite system was highly dependent on the molar ratio of [Fe(II)] and [sulfite]. Negligible arsenic removal was observed in the Fe(II)/sulfite and Fe(II)/PDS systems, while ∼80% arsenic was removed in the Fe(II)/PMS system under identical acidic condition. This interesting phenomenon was due to that ferric precipitation only occurred in the Fe(II)/PMS system. As(V) was further removed via adsorption onto the iron precipitate or the formation of ferric arsenate-sulfate compounds, which was confirmed by particle diameter measurements, fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Through tuning solution pH, complete removal of total arsenic could achieve in all three systems. Among these three Fe-based technologies, the hybrid oxidation-coagulation Fe(II)/PMS system demonstrated potential superiority for arsenic immobilization by not requiring pH adjustment for coagulation and facilitating the in-situ generation of ferric arsenate-sulfate compounds with comparably low solubility levels like scorodite. These findings would deepen the understanding of these three Fe-based Fenton-like technologies for decontamination in water treatment.
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高影响因子
Materials Science & Engineering C-Materials for Biological Applications
·
2020
·
IF 5.88
Dan Zhao,Zhixia Zhang,Xuemei Liu,Rui Zhang,Xincai Xiao
The preparation of long-wavelength emitting carbon dots (CDs) with good antibacterial function and biosensing ability through element doping method is the hotspot of present researches. This paper reports the rapid synthesis of nitrogen and phosphorus co-doped long wavelength-emitting CDs (N, P-CDs, λ em = 530 nm) under low reaction temperature (30 min, 60 °C). This method used glucose, polyethyleneimine and phosphoric acid as raw materials, and each raw material worked multi-functionally during the synthesis process. The impacts of raw materials and reaction parameters upon optical properties of prepared N, P-CDs have been studied, and the synthesis mechanism has been discussed. Meanwhile, N, P-CDs were used as antibacterial material with minimum inhibitory concentrations against Staphylococcus aureus and Escherichia coli at 7.5 μg·mL −1 and 0.5 mg·mL −1 respectively. The prepared CDs were also used to realize fluorescence imaging of S. aureus , and work as fluorescence probe to detect Sudan Red I with limit of detection at 43 nM.
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高影响因子
危险品化学品经营许可证（带存储）