PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Feiyang Cheng,Xiangfeng Zhu,Fucheng Yun,Mengting Wei,Chen Shi,Jian Han
As one of the most widely utilized polymer coating systems, polyvinyl chloride (PVC) is extensively applied in industrial protection fields due to its excellent processability and cost efficiency. To meet rising performance demands in extreme environments, developing PVC coatings with efficient flame retardancy and smoke suppression has become a key research focus. This study developed an innovative BiOCl@Cu-MOF hybrid through an in situ growth strategy. Incorporating the additive at 15 phr increased the limiting oxygen index (LOI) from 23.4 % to 29.4 %. The PVC coating also passed the UL-94 rating test, reaching the highest V-0 level. Cone calorimetry analysis showed a 55.9 % reduction in peak heat release rate, indicating superior flame retardant behavior. In terms of smoke suppression, the coating achieved a 66.7 % decrease in peak smoke production rate. More importantly, the peak carbon monoxide production, a critical lethal factor in fires, was suppressed by 46.9 %. The PVC coating further exhibited 99.9 % antibacterial efficacy against both Staphylococcus aureus and Escherichia coli . This work establishes a pioneering design paradigm for multifunctional protective coatings, offering significant potential in fire-safe building materials, electronics encapsulation, and bio-secure applications.
研究领域:
材料科学
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化学工程
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高分子材料
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防火技术
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DOI
高影响因子
Journal of Environmental Sciences
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2023
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IF 6.9
Man Yang,Zhenzhen Shi,Shaodong Sun,Bian Yang,Jie Cui,Jianing Li,Daqin Yun,Nian Lei
Developing heterojunction photocatalyst with well-matched interfaces and multiple charge transfer paths is vital to boost carrier separation efficiency for photocatalytic antibiotics removal, but still remains a great challenge. In present work, a new strategy of chloride anion intercalation in Bi 2 O 3 via one-pot hydrothermal process is proposed. The as-prepared Ta-BiOCl/Bi 24 O 31 Cl 10 (TBB) heterojunctions are featured with Ta-Bi 24 O 31 Cl 10 and Ta-BiOCl lined shoulder-by-shouleder via semi-coherent interfaces. In this TBB heterojunctions, the well-matched semi-coherent interfaces and shoulder-by-shoulder structures provide fast electron transfer and multiple transfer paths, respectively, leading to enhanced visible light response and improved photogenerated charge separation. Meanwhile, a type-II heterojunction for photocharge separation has been obtained, in which photogenerated electrons are drove from the CB (conduction band) of Ta-Bi 24 O 31 Cl 10 to the both of bilateral empty CB of Ta-BiOCl and gathered on the CB of Ta-BiOCl, while the photogenerated holes are left on the VB (valence band) of Ta-Bi 24 O 31 Cl 10 , effectively hindering the recombination of photogenerated electron-hole pairs. Furthermore, the separated electrons can effectively activate dissolved oxygen for the generation of reactive oxygen species (·O 2 − ). Such TBB heterojunctions exhibit remarkably superior photocatalytic degradation activity for tetracycline hydrochloride (TCH) solution to Bi 2 O 3 , Ta-BiOCl and Ta-Bi 24 O 31 Cl 10 . This work not only proposes a Ta-BiOCl/Bi 24 O 31 Cl 10 shoulder-by-shoulder micro-ribbon architectures with semi-coherent interfaces and successive type-II heterojunction for highly efficient photocatalytic activity, but offers a new insight into the design of highly efficient heterojunction through phase-structure synergistic transformation strategy.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Ruixia Jin,Xiaoman Yu,Haiming Xu,Huan Xia,Quanpeng Zhao,Huimei Tian
Ameliorating photocatalytic performance by enhancing carrier transport efficiency is an appealing strategy. Thus, Bi 2 Se 3 /BiOCl heterostructure with appropriate oxygen vacancies (OVs) was successfully fabricated by using of ultrasound approach. The results discern that BOC-2 can degrade 81 % Oxytetracycline hydrochloride (OTC, 20 mg/L) within 3 h, which is 3.46 and 5.71 times higher than BiOCl and Bi 2 Se 3 , respectively. Mechanism studies verified that abundant photo-generated electrons/thermally excited electrons are quickly transferred from Bi 2 Se 3 to BiOCl via the electron transport channels formed by interface oxygen vacancies (IOVs) under the synergy of interface/thermal electric field, and thus OTC was effectively mineralizing to CO 2 and H 2 O under the cooperation of ·O 2 – (65.71 %) and h + (26.33 %). Meanwhile, the contribution of the interface/thermal electric field to photocatalytic activity was firstly established. Moreover, the pollutant degradation pathways and the intermediates toxicity were systematically researched by DFT theoretical calculations and experiments. This work offers an innovation strategy to mend photocatalytic activity by boosting carrier transport efficiency under the collaborative of interface/thermal electric field.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2018
·Vol. 42
·期 24
·19571-19577
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IF 3.201
Jingyu Sun,Haiming Xu,Dongya Li,Zhongwei Zou,Qiyuan Wu,Guoguan Liu,Jia Yang,Lei Sun,Dongsheng Xia
A feathery-shaped form of BiOCl (BOC-M) with a high concentration of oxygen vacancies was successfully synthesized using the ultrasound method at room temperature with maltitol as a surfactant. BOC-M was found to exhibit excellent visible-light photocatalytic activities for the degradations of the antibiotic tetracycline hydrochloride (TC-HCl) and rhodamine B (RhB), whose reaction rate was found to be approximately 3 times higher than that using bulk BiOCl (BOC). The enhanced visible photocatalytic performance of BOC-M was ascribed to its high concentration of oxygen vacancies, large specific surface area and strong hydrophilicity. Moreover, the photocatalytic reaction mechanism was further revealed by performing radical- and hole-trapping experiments and electron spin resonance spectroscopy (ESR). The results suggested that ˙O2− was the main active species during the degradation process. This work provided a facile and scalable method to synthesize maltitol-assisted Bi-based photocatalysts and shed light on the highly efficient catalysis offered by BiOCl resulting from the oxygen vacancies produced by the new synthetic route we developed.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
OPTICAL MATERIALS
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2023
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IF 3.9
Cheng Yao,Danni Wu,Changlai Yuan,Xiaogang Xue,Liming Liu,Xiaowen Zhang
BiOCl-based heterojunctions with effective charge separation/transportation are highly desired for photocatalytic degradation of pollutants. Fantastic 0D/2D heterojunctions between MoSe 2 Quantum dots (QDs) and BiOCl (MoSe 2 QDs/BiOCl) were synthesized via liquid phase exfoliation and hydrothermal method . X-ray diffraction, scanning electron microscope , and transmission electron microscopy confirm the excellent crystallinity and the superior surface morphology of the combination of the two materials. The UV–Vis Diffuse Reflectance Spectroscopy shows that MoSe 2 QDs/BiOCl exhibits enhanced light absorption . Furthermore, electrochemical impedance spectroscopy and photoluminescence measurements suggest that the MoSe 2 QDs/BiOCl heterojunction promotes charge separation and transport of photogenerated carriers. As results, the optimized MoSe 2 QDs/BiOCl with 0.5 wt% of MoSe 2 QDs significantly enhances the degradation rate of Rhodamine B to 3.59 times (2.76 × 10 −3 min −1 ) that of pristine BiOCl (7.66 × 10 −4 min −1 ). Free radical capture experiments indicate that ·O 2− plays an overwhelming role in the Rhodamine B degradation, compared to h + or ·OH. Our experiments provide some new ideas for improving the photocatalytic degradation performance of BiOCl.
研究领域:
材料科学
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环境科学
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化学
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纳米技术
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产品关联
DOI
高影响因子
MATERIALS LETTERS
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2015
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IF 2.489
Meichao Gao,Dafeng Zhang,Hong Li,Xipeng Pu,Xin Shao,Wenzhi Li
AgCl/BiOCl heterostructures were synthesized by a simple one-pot combustion method. The as-synthesized photocatalysts were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy , and X-ray photoelectron spectroscopy. Photodegradation experiments show that the AgCl/BiOCl heterostructures exhibit better photocatalytic properties than pure BiOCl sample to degrade rhodamine B. The 15% AgCl/BiOCl shows the best photocatalytic performance under the UV light irradiation. The formation of heterostructure improves the separation of photogenerated electrons and holes derived from the coupling effect of BiOCl and AgCl heterojunction.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2018
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IF 4.439
Wei Li,Shu-ao He,Zi-ying Su,Wei Xu,Xue-chuan Wang
In this paper, the CuO nanoparticles (NPs) with narrow bandgap and near-infrared light response were chosen as the co-catalyst, and a series of BiOCl-CuO (BC-x, x = 1, 2 and 3) heterojunctions with superior visible light response and fast interfacial charge migration were synthesized by a facile one-pot solvothermal method. Then, the morphology, composition, crystal structure, photoelectronic properties and visible-light photocatalytic performance were studied in sequence. Research shows that the incorporation of CuO NPs can effectively enhance the photocatalytic performance of BiOCl semiconductor. For the moderate incorporation of CuO NPs, the p-n heterojunction interfaces can be fabricated between BiOCl and CuO components, so that the light response and interfacial charge migration ability can be effectively improved. Especially, when the content of incorporated CuO NPs was about 0.02 g, the BC-2 heterojunction exhibited the highest photocatalytic activity and very robust photostability in decomposing organic targeted pollutants (acid orange (AO) and bisphenol A (BPA)) and H 2 evolution reaction (HER) experiments under visible-light illumination.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2020
·Vol. 7
·期 6
·1345-1361
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IF 5.958
Yu Zhang,Qian Shao,Heyun Jiang,Lirong Liu,Mingyang Wu,Jing Lin,Jiaoxia Zhang,Shide Wu,Mengyao Dong,Zhanhu Guo
Bismuth oxychloride (BiOCl) and cerium dioxide (CeO2) composites were successfully synthesized via a facile one-step co-precipitation method. The BiOCl/CeO2 composites were observed to be sheet-like structures with some CeO2 nanoparticles distributed on the surface. The BiOCl/CeO2 composites exhibited higher photodegradation performance (98.8%) of rhodamine B (RhB) than pure BiOCl (80.2%) and CeO2 (9.6%) under solar simulated irradiation. The BiOCl/CeO2 composites with a Bi/Ce molar ratio of 4 : 1 exhibited the highest photocatalytic performance for RhB, and an optimal RhB degradation efficiency of 98.8% was achieved under solar simulated irradiation for 60 min. The photocatalytic performance results were compared with other BiOCl composites. The photocatalytic mechanisms of BiOCl/CeO2 composites were discussed by radical trapping experiments and electron spin resonance (ESR), which indicated that h+ and ˙O2− were the dominant radicals for RhB degradation.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
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2015
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IF 2.711
Yingjun Li,Qin Wang,Baocang Liu,Jun Zhang
BiOCl nanosheets with tunable lamella thickness and dominantly exposed {0 0 1} facets were selectively synthesized via a facile hydrothermal method. By modifying the synthetic parameters, such as the amount of P123 and mannitol, the reaction time, types of surfactants, the size, thickness, morphologies, and percentage of {0 0 1} facets over BiOCl nanosheets were well controlled. The exposed {0 0 1} facets with high surface energy and high density of oxygen atoms are not only conducive to the adsorption of the rhodamine B (RhB) dye but also can accumulate the photo-generated electrons, which can be captured by O 2 and converted into reactive oxygen species O 2 − . Therefore, the resultant ultrathin BiOCl nanosheets with exposed {0 0 1} facets exhibit superior catalytic activity for dye photosensitization degradation under visible light irradiation. Impressively, the ultrathin BiOCl nanosheets prepared with P123 and mannitol manifest superior catalytic activity and RhB was completely degraded within 20 min. Our current work is expected to offer a new insight into photocatalytic theory for better understanding of visible light photocatalytic reactions and rational design of highly active photocatalysts.
研究领域:
材料科学
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环境科学
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光催化
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
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IF 3.387
Yuwei Mi,Haiping Li,Yongfang Zhang,Renjie Zhang,Wanguo Hou
One-dimensional (1D) belt-like Bi 2 S 3 /BiOCl composites were synthesized by a facile one-pot solvothermal method, using bismuth subsalicylate as the Bi source and, in particular, as the morphological template. The synthesized composites were characterized by many techniques, such as XRD, SEM, XPS, TEM and UV–vis diffuse reflectance and photoluminescence spectra. Photocatalytic activity of the composites was evaluated via catalytic degradation of salicylic acid (SA) and Rhodamine B (RhB) under visible light irradiation. The belt-like composites show a heterojunction structure in which the Bi 2 S 3 nanoparticles are uniformly dispersed in the BiOCl matrix with dominant exposed (010) facets. They exhibit enhanced photodegradation efficiency in comparison with pure belt-like Bi 2 S 3 and BiOCl. With increasing Bi 2 S 3 content, the photodegradation efficiency of the composites increases then decreases. The Bi 2 S 3 /BiOCl composite with a Bi 2 S 3 content of ∼2% exhibits the highest photocatalytic activity. The apparent first-order photodegradation rate constants of the composite for SA (∼0.048 h −1 ) and RhB (∼0.299 min −1 ) are significantly higher than those of the pure BiOCl and Bi 2 S 3 for SA (∼0 and ∼0.0007 h −1 ) and RhB (∼0.102 and ∼0.002 min −1 ), respectively. The enhancement in photocatalytic activity is attributed to the efficient separation of photoinduced electrons and holes along with the increased specific surface area and visible-light absorption. The holes and superoxide radicals are the major active species. In addition, the belt-like Bi 2 S 3 /BiOCl photocatalysts exhibit excellent stability and reusability. This work provides a facile strategy for synthesis of 1D hierarchical Bi-based composite photocatalysts, and demonstrates the potential of belt-like Bi 2 S 3 /BiOCl composites for application in environmental remediation.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2020
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IF 3.83
Luo Huang,Yuan Yu,Dongfeng Sun,Fangyou Meng,Li Li,Mengfan Niu,Xiang Bi,Songmin Lin,Wenhui Chu,Bingshe Xu
In this work, we applied the fenton-like reaction to fabricate TiO 2 nanocrystalline , and employed molecular self-assembly with TiO 2 and BiOCl to form composite photocatalyst with cookie-like nano-heterostructure for enhanced solar energy to hydrogen. The TiO 2 @BiOCl photocatalyst with cookie-like nano-heterostructure exhibited excellent photocatalytic performance for the photocatalytic hydrogen evolution under sunlight irradiation compared to the single TiO 2 or BiOCl. Besides, the TiO 2 @BiOCl photocatalyst displayed outstanding reusability and stability in the photocatalytic reaction. Meanwhile, the possible mechanisms of cookie-like nano-heterostructure formation and photocatalytic redox reaction have been proposed. What's more, this work demonstrated a new perspective for the design and mass preparation of TiO 2 -based composite photocatalytic materials at atmospheric condition, which demonstrated that this method has enormous potential to achieve mass preparation of efficient photocatalyst for photocatalytic application.
研究领域:
材料科学
·
光催化技术
·
能源转换
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2019
·
IF 3.261
Shengchao Miao,Zhenxing Zha,Ying Li,Xinxiang Geng,Jiahui Yang,Shihai Cui,Jing Yang
The novel semiconductor heterojunction of MIL-53(Fe)/BiOCl composite was first prepared through the solvothermal reaction. The prepared materials were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunner-Emmet-Teller (BET) and ultraviolet-visible diffuse reflectance spectroscopy (DRS). MIL-53(Fe)/BiOCl heterojunction is a kind of photoexcited materials and it accelerates the photoreactivity of BiOCl under the visible light irradiation. It was used to remove Rhodamine B (RhB) with the existence of persulfate (PS). The UV–vis spectrophotometer and the TOC detector show that the degradation rate and TOC removal efficiency of RhB (20 mg/L) are 99.5% and 69.4%within 30 min visible-light irradiation, respectively. Due to the proper band gap of material and the presence of electron acceptor, PS, the survival time of active radicals are increased. The active species h + , ·SO 4 − and ·OH are found to play the important roles during the reaction system. The possible mechanism for the RhB degradation of MIL-53(Fe)/BiOCl/PS is also proposed. Furthermore, the results of the material reusability for the degradation of RhB indicate that the MIL-53(Fe)/BiOCl has a good stability and can be used in the environmental water sample treatment.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）