CRYSTENGCOMM
·
2025
·
IF 2.6
Huanxia Lin,Wensong Lin,Yeheng Zhang,Ran Gao,Yong He
BiOCl/UiO-66-NH2 photocatalysts were synthesized by a hydrothermal method. BUNH-8 (BiOCl/UiO-66-NH2 composite with 8% UiO-66-NH2) exhibits exceptional photocatalytic performance under visible-light illumination, degrading 92% of rhodamine B (RhB) within 60 minutes, which is 38.16% greater than that of pure BiOCl. The enhanced performance of the BiOCl/UiO-66-NH2 composite photocatalyst can be attributed to the distinct band structure difference between BiOCl and UiO-66-NH2, facilitating effective Z-scheme charge separation and transfer under light irradiation. Superoxide radicals were determined to be the crucial active species in the photocatalytic degradation process via electron paramagnetic resonance (EPR) analysis and a simulated photocatalytic degradation experiment of the dye RhB with scavengers added. Apart from its high efficiency, BUNH-8 demonstrates excellent stability as well. Even after being reused four times, it maintains its excellent photocatalytic performance, suggesting its high potential for application.
研究领域:
材料科学
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环境催化
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光催化
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纳米复合材料
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污染物降解
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2024
·
IF 4.4
Qianqian Chen,Yuancai Lv,Junjie Pan,Weihan Chen,Gengwu Zhou,Xiaobing Yang,Kejun Cheng
Antibiotics, particularly tetracycline (TC), are extensively used in medicine, agriculture, animal husbandry, and the food industry due to their bacteriostatic and antibacterial properties. However, the widespread use of antibiotics has led to serious consequences, particularly in the form of water pollution and the emergence of numerous antibiotic-resistant microorganisms. Therefore, it is essential to implement effective measures to mitigate these environmental impacts. In this paper, we introduce a novel BiOCl@Bi-carbon heterojunction derived from Bi-MOF. The synthesized samples were thoroughly characterized through various techniques. The results demonstrate that BiOCl was successfully synthesized on the surface of Bi-MOF via in situ transformation, and that Bi-MOF was converted into Bi-doped porous carbon (Bi-carbon) after high-temperature annealing treatment. The coupling of BiOCl with Bi-carbon significantly enhances the photocurrent density. The photocatalytic activity of the samples was effectively evaluated by measuring the degradation of TC, with BiOCl@Bi-carbon demonstrating the highest photocatalytic efficiency, achieving a degradation rate of 96.27 % for TC. Additionally, BiOCl@Bi-carbon exhibits excellent stability. Its outstanding photocatalytic performance indicates significant potential for practical applications. Furthermore, we analyze the mechanism underlying the photocatalytic degradation of TC at the end of the study.
研究领域:
环境科学
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材料科学
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化学
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光催化
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DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
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IF 5.876
Jingke Song,Zhe Zhang,Songsong Zhi,Bingxuan Niu,Han Dong,Dapeng Wu,Kai Jiang
Background Development of human society has led to various environmental problems and energy crisis. Methods In this paper, Bismuth oxychloride (BiOCl) with a 3D network structure was prepared via a simple one-step sodium dodecylbenzenesulfonate (SDBS) assisted hydrothermal method and used for CO 2 reduction and antibiotic degradation. Consideration was given to the influence of addition of SDBS in the preparation process on the microscopic morphology and energy band structure of the photocatalyst. Significant findings The results of the present study indicate that the formation of the 3D network structure helps to expose the {001} facets of BiOCl and promotes the generation of more oxygen vacancies. As-prepared BiOCl-0.6, i.e., 0.78 g of Bi(NO 3 ) 3 ·5H 2 O with 0.6 g SDBS, demonstrating the highest photocatalytic reduction performance of CO 2 . The production of CO by BiOCl-0.6 can reach 59.5 and 20.1 µmol g −1 after 4 h of UV-vis/vis illumination, which is ten times higher than the control BiOCl. In addition, BiOCl prepared with a 3D network structure also showed efficient antibiotic (oxytetracycline hydrochloride, OTC) degradation ability. When the initial concentration of OTC was 20 mg/L, OTC was completely removed after 45 min of UV-vis irradiation, and 77.2% of OTC was removed after 90 min of photocatalytic reaction under visible light. In the photodegradation process, photogenerated holes (h + ) and superoxide radical ( · O 2 − ) play an important role.
研究领域:
环境科学
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材料科学
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化学工程
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光催化
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DOI
高影响因子
ACS Applied Nano Materials
·
2022
·
IF 6.14
Yanqun Zhang,Kefeng Zhao,Jingtao Huang,Hsien-Yi Hsu,Jingwei Xu,Rafael Luque,Wenxin Niu,Guobao Xu
Micelles of surfactants have been employed as a powerful tool for the synthesis of hollow nanostructures. Nonetheless, it is still challenging to use micelles to direct the growth of hollow nanostructures with open interiors, especially for crystalline materials. Herein, we report a versatile method to precisely synthesize non-centrosymmetric hollow BiOCl nanocaps with open interiors for the first time. The growth mechanism of the hollow BiOCl nanocaps is elucidated, and the openings of BiOCl nanocaps can be precisely controlled by fine tuning their growth conditions. The non-centrosymmetric BiOCl nanocaps yield a pseudo-first-order degradation kinetic rate constant of up to 0.1217 min–1 in the photodegradation of rhodamine-B, 7.8 times higher than that of common BiOCl nanoplates. This suggests that BiOCl nanocaps show excellent photocatalytic performance to degrade colored rhodamine B. Furthermore, the BiOCl nanocaps can be also extended in the photodegradation of colorless contaminants in industrial wastewater. More importantly, the micelle-directed growth strategy can be generalized to synthesize non-centrosymmetric BiOCl0.5Br0.5 and BiOBr hollow nanocaps. This synthetic strategy heralds a paradigm for designing non-centrosymmetric hollow nanostructures with micelles and may open up an avenue for unique hollow nanomaterials with tailorable structures and properties.
研究领域:
材料科学
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纳米技术
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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
·
IF 8.1
Chunru Sun,Min Xiao,Jianghao Tian,Huixian Zhang
A polysulfone/metal–organic framework (MOF) based photocatalytic nanofiltration membrane is proposed in this study. Interfacial polymerization (IP) is the universal method of preparing nanofiltration (NF) membranes. In this work, the (TFN) membranes were synthesized with an in-situ interfacial synthetic method to incorporate BiOCl/MIL-101(Fe)@PDA(BMP) into the polyamide (PA) selective layer. Five distinct BMP loadings (0, 0.05, 0.1, 0.15, and 0.2 wt%) were established to examine the impact of additional BMP on the physicochemical characteristics of the produced TFN membranes. Under the irradiation of a xenon lamp with a power of 300 W, the water flux of M3 at a pressure of 0.6 MPa was 277.14 L m -2 h -1 . Furthermore, the BSA-based antifouling tests demonstrated the membrane’s outstanding antifouling capabilities, with a flux recovery rate reaching 94.08 %. The optimal membrane maintained a high and stable retention of tetracycline for 12 h. The interfacial synthesis of MOF/PA offers a new approach to the fabrication of photocatalytic NF membranes.
研究领域:
材料科学
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环境工程
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化学工程
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纳米技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
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IF 10.652
Runren Jiang,Guanghua Lu,Matthew Nkoom,Zhenhua Yan,Donghai Wu,Jianchao Liu,Tianjian Dang
Developing excellent photocatalysts to mineralize pollutants and reduce toxicity is an urgent problem in current environment purification research. Here, we synthesized a novel 2D/2D Cu 2 WS 4 /BiOCl Z-scheme system by a facile solvent mixing method and characterized the samples by various analytical methods. Compared with 3D/2D, the close contact surface of the 2D/2D catalyst endows it with extremely fast charge transfer and a large number of active sites, a Z-scheme system process strong electronic interaction and efficient charge separation, resulting in the high photocatalytic performance of the 2D/2D Cu 2 WS 4 /BiOCl Z-scheme system. As expected, The 15% 2D/2D Z-scheme Cu 2 WS 4 /BiOCl possessed the highest rate constant 1.14 × 10 −1 min −1 in the degradation of benzophenone-1 (BP1), which are 8, 5 and 4 times greater than that of BiOCl (1.36 × 10 −2 min −1 ), Cu 2 WS 4 (2.27 × 10 −2 min −1 ) and 15% 3D/2D Cu 2 WS 4 /BiOCl (2.6 × 10 −2 min −1 ), respectively. Meanwhile, the practicability of Cu 2 WS 4 /BiOCl was studied by the influence of relevant real water matrix on photocatalytic degradation of BP1. In addition, the result of density functional theory calculations demonstrated that the 2D/2D Cu 2 WS 4 /BiOCl system has faster charge transferability and closer integration than that of the 3D/2D system, which further confirms that the close 2D interface is conducive to charge transfer at the interface. Nine potential degradation products were identified as intermediates, and extremely significant toxicity reduction during the degradation process was confirmed by an ECOSAR prediction and zebrafish acute toxicity test . Compared with gene expression, the hatching rate and survival rate of zebrafish embryo are more sensitive and considered to be better choices for toxicity assessment.
研究领域:
环境科学
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材料科学
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毒理学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Zhengkun Yu,Yunlei Zhou,Xingyu Liu,Shuqi Gong,Tianyi Sun,Huanshun Yin,Jingting Kang
A Bi/BiOCl/Bi(In 3+ )-MOF Z-scheme heterojunction enriched with positive electric charges on the surface caused by In 3+ doping was prepared by a one-step solvothermal method. Photodegradation of antibiotics (tetracycline, amoxicillin, ceftriaxone), antibiotic-resistant Escherichia coli (AR E. coli ), the tetA gene they carried, and Fusarium graminearum was investigated. The experimental results showed that Bi/BiOCl/Bi(In 3+ )-MOF sample possessed efficient photodegradation activity, with a removal of 10 7.34 CFU·mL −1 against AR E. coli in 80 min, 83.0 % and 4.89 log 10 copies·mL −1 for tetracycline and tetA gene in 120 min, respectively. Zeta potential test and adsorption capture experiment confirmed that Bi/BiOCl/Bi(In 3+ )-MOF surface was rich in positive charges and had a strong nanoconfinement effect on negative-charged bacteria and ARGs, which shorten the time for the active substances produced by photocatalysis to come into contact with bacteria and ARGs, thereby improving the photocatalysis degradation effect. Finally, Bi/BiOCl/Bi(In 3+ )-MOF sample was applied and discussed for the removal of complex colonies from duck farm wastewater.
研究领域:
环境科学
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微生物学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
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IF 9.4
Hua Xu,Liling Cao,Yi Yu,Yuan Li,Xiangming Liu,Chengliang Mao,Lizhi Zhang
1 O 2 generation over (0 0 1) or (0 1 0) facet exposed BiOCl (B001 or B010) with/without phosphate modification were studied from the aspects of excitons involved energy transfer route, the O 2 − oxidation based charge transfer route and the H 2 O 2 oxidation by HClO. Phosphate modification not only enhance charge separation thus result in H 2 O 2 oxidation by HClO to release 1 O 2 but also weaken excitonic effect in the confined layer of BiOCl accordingly affect 1 O 2 generation via energy transfer. Considering [0 0 1] orientation favors the formation of excitons than that of [0 1 0] direction over BiOCl, excitons loss was hardly compensated by the H 2 O 2 oxidation by HClO for 1 O 2 generation over phosphate modified B001. Nevertheless, limited excitonic effect makes the O 2 − oxidation by h + via charge transfer as dominant route for 1 O 2 yielding over B010, the extra H 2 O 2 oxidation with HClO after phosphate modification significantly enhance 1 O 2 generation over B010 followed with 2.2 times higher carbamazepine photodegradation activity. The initial attack of C C bond via 1 O 2 to form epoxide played important roles on carbamazepine degradation. This study demonstrated that the facet-specific phosphate modification of photocatalysts can finely tune reactive 1 O 2 species for superior pharmaceuticals degradations.
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
PubMed
高影响因子
Small
·
2021
·Vol. 18
·期 9
·2104550
·
IF 13.281
Hui Wang,Weitao Yang,Kexin Bian,Weiwei Zeng,Xiao Jin,Ruizhuo Ouyang,Yan Xu,Chenyu Dai,Shuang Zhou,Bingbo Zhang
Excess generation of reactive oxygen species (ROS) based on sensitizers under ultrasound (US) excitation can cause the death of tumor cells via oxidative damage, but sonosensitizers are largely unexplored. Herein, oxygen-deficient black BiOCl (B-BiOCl) nanoplates (NPs) are reported, with post-treatment on conventional BiOCl by simple UV excitation, showing stronger singlet oxygen ( 1 O 2 ) generation than commercial TiO 2 nanoparticles and their derivatives under US irradiation. Moreover, L-buthionine-sulfoximine (BSO), a GSH biosynthesis inhibitor, is incorporated into B-BiOCl NPs. The authors find that BSO can be released owing to the degradation of B-BiOCl NPs in the presence of acid and GSH, which are overexpressed in tumors. The results show that BSO/B-BiOCl-PEG NPs have a multifunctional synergistic effect on improving ROS production. In particular, BiOCl has remarkable near-infrared light absorption after UV treatment and is good for photoacoustic imaging that can guide subsequent sonodynamic therapy. This work shows that just with a simple oxygen deficiency treatment, strong 1 O 2 generation can be provided to a conventional material under US irradiation and, interestingly, this effect can be amplified by using a small inhibitor BSO, and this is clearly demonstrated in cell and mice experiments.
研究领域:
癌症治疗
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材料科学
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生物医学工程
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纳米技术
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药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2020
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IF 3.306
Sarenqiqige Bao,Haiou Liang,Chunping Li,Jie Bai
A high-efficiency BiOCl/TiO 2 heterostructure hollow-tube (BTHTs) with type-II was successfully synthesized by simple electrospinning technology and solvothermal process loaded with BiOCl nanosheets on TiO 2 hollow-tubes (THTs). The results of morphology show that, the surface of THTs was covered by flaky BiOCl like pieces of flower. Optical and photo-electrochemical characterizations show that the composite catalyst has visible light absorption and high photo-generated electron-hole separation ability. Comparing with THTs and powder BiOCl, the BTHTs composites exhibited highest adsorption capacity and photocatalytic activity in the photodegradation of Tetracycline (TC), in visible light (λ ≥ 420 nm). The composites could also degrade Chlortetracycline, Demeclocycline, Doxycycline and Oxytetracycline efficaciously. Additionally, trapping experiments were carried out, and the possible photocatalytic degradation mechanism was proposed.
研究领域:
材料科学
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环境科学
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纳米技术
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光化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Xiuling Li,Yanan Pang,Yongle Zhang,Bo Ge,Junchang Liu,Yuling Zhang,Limin Zhao,Guina Ren,Zhaozhu Zhang
Solar interface heating evaporators are widely used and have been able to obtain clean water vapor from sewage. However, the soluble contaminants remaining in the original solution were not removed, and the floating organic pollutants affect the steam production rate. In this paper, the superhydrophobic Bi/BiOCl with low surface tension is synthesized and loaded to the felt to construct the floating layer of the photothermal device. The floating layer collaborated with the filter paper hydrophilic layer and the Pyromellitic dianhydride-Tris (4-aminophenyl) amine covalent organic framework (PMDA-TAPA COF) photothermal layer to treat the sewage containing dissolved pollutants, achieving an interfacial evaporation rate of 1.47 kg⋅m −2 ⋅h −1 . Importantly, the floating layer not only has a contact angle of 161°, which can selectively adsorb the organic solvents floating on the water surface, but also can degrade the pollutants dissolved in the water under the light and solving the problems that hinder device applications. The valence band and conduction band potentials of superhydrophobic Bi/BiOCl are at 3.065 eV and −0.435 eV, respectively, which produce h + and O 2 – under light to degrade dissolved pollutants in water. The introduction of novel superhydrophobic Bi/BiOCl photocatalyst in the floating layer provides a reference for solving the problem of pollutant residues.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Coatings
·
2024
·Vol. 14
·期 2
·192
·
IF 2.9
Danye Zuo,Yuhong Yin,Liming Jiang,Zhi Xia,Chong Tan,Junsheng Li,Jinlong Zuo,Yuyang Wang
This study focuses on synthesizing a composite material of Ag/ZnO/BiOCl using Ag, ZnO, and BiOCl as raw materials. The material was prepared by loading Ag and BiOCl onto ZnO nanofilms, aiming to enhance the photocatalytic degradation of ciprofloxacin (CIP). Optimization of the photocatalytic degradation process through single-factor experiments revealed that under conditions of an initial CIP pH of 9, an Ag/ZnO/BiOCl dosage of 1 g/L, and an initial CIP concentration of 5 mg/L the conversion efficiency of CIP reached 98.79% after 150 min of exposure to a 250 W xenon lamp simulating sunlight. Furthermore, the composite material maintained a conversion efficiency of 86.17% for CIP even after five cycles of reuse, demonstrating its excellent stability. The optical properties, elemental composition, valence state, crystallinity, and morphology of the samples were analyzed using techniques such as X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), UV–visible diffuse reflectance spectroscopy (UV-vis DRS), Fourier-transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The results indicate that the introduction of Ag expanded the light response range of ZnO, while the addition of BiOCl improved the separation efficiency of electron–hole pairs in the composite nanomaterial. The photocatalytic mechanism was further elucidated through radical scavenging experiments, confirming that ·OH and h+are the main active species in the degradation process.
研究领域:
材料科学
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环境工程
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光化学
✓ 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）