JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
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2025
·
IF 6
Chenglin Zhang,Jiangpeng Li,Su Zhan,Wenjun Jiang,Feng Zhou
The notorious issue of hazardous growth in ballast water and its potential for widespread diffusion pose significant challenges to the sustainable development of maritime transportation economies. Here, a simplified and sustainable method is presented for synthesizing metallic Bi-doped Bi 2 Sn 2 O 7 , assisted by H 2 O 2 to construct a Fenton-like system for the photocatalytic inactivation of marine bacteria. The introduction of metallic Bi is beneficial to the overall sterilization improvement, notably, the 3BBSO (Bi/Bi 2 Sn 2 O 7 ) exhibits optimal selectivity in marine bacteria inactivation, with improved decomposition of H 2 O 2 . The combination of metallic Bi and additional H 2 O 2 contributes to the separation of photo-generated charges and the production of •OH radicals, thereby enhancing sterilization efficiency in natural seawater. Furthermore, characterization results demonstrate that the metallic Bi act as a pivotal active sites for the enrichment of free electrons and adsorption centers for •OH, increasing the light absorption range and promoting photocatalytic bacterial inactivation. DFT simulations suggest that metallic Bi provides an optimal position for H 2 O 2 abundance, utilizing aggregated electrons to generate more •OH radicals. This sustainable framework offers valuable insights into the treatment of ballast water by deactivating the concentration of marine microorganisms.
研究领域:
环境科学
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微生物学
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
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2017
·
IF 2.446
Xiaojuan Zhao,Hongda Cui,Tianhe Wang
We report a novel Bi 2 Sn 2 O 7 /Ag-AgCl photocatalysts with excellent visible-light-driven photocatalytic properties. The crystalline Bi 2 Sn 2 O 7 was synthesized by solid-state reaction at 550 °C. Then Bi 2 Sn 2 O 7 /Ag-AgCl was prepared using deposition-precipitation technique followed by photo-reduction of partial Ag + to Ag 0 nanoparticles on surface of AgCl. The photocatalysis were evaluated by degrading organic dyes under controlled conditions. The Bi 2 Sn 2 O 7 /Ag-AgCl composite exhibited a much improved photocatalysis, approximately 7 times stronger than that of pure Bi 2 Sn 2 O 7 , primarily due to its enhanced visible-light absorption and high separation efficiency of charge. On the basis of band structure analysis, a possible mechanism of photocatalysis enhancement for Bi 2 Sn 2 O 7 /Ag-AgCl is proposed. The strong photocatalytic capability, together with simplicity of fabrication suggests Bi 2 Sn 2 O 7 /Ag-AgCl composite provided in this study may have certain practical applications in water treatments. Additionally, the study implies a novel but simple methodology that may be also applicable in construction of other types of single semiconductor/plasmonic composite photocatalysts.
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
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Chengdeng Yang,Sheng Feng,Changchang Ma,Yun Zhou,Xiaojun Dai,Zhiwei Ye,Yang Wang
A series of Bi 2 Sn 2 O 7 /UiO-66-NH 2 nanoparticles were synthesized by in-situ solvothermal method as efficient adsorption and visible-light-driven photocatalysts for the removal of tetracycline（TC）. Among them, the BUN16 presents excellent adsorption and degradation ability for the TC, which is more than 3.6 times that of monomers . The adsorption-enhanced degradation mechanism of BUN16 nanomaterials was revealed via BET, XPS, Zeta potential , FT-IR, EPR, EIS and kinetic analysis, meanwhile the performance of removing TC decreased slightly after five cycles. The excellent catalytic performance can be attributed to its excellent adsorption capacity and the synergistic effect of the Z-type heterojunction charge transfer mechanism. This work provides a basic principle for the scientific construction of Z-type heterojunction materials with adsorption catalytic function to remove TC in actual wastewater.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Nan Li,Yuhua Niu,Wengang An,Zonghang Liu,Fangyi Ruan,Guodong Fan
In this study, AgBr/Bi 4 Ti 3 O 12 /Bi 2 Sn 2 O 7 (ABr/BTO/BSO) composites were successfully synthesized to facilitate multi-channel fast charge transfer. This directs the charge carriers to travel along multichannel pathways and suppresses carrier recombination. The mechanisms underlying charge transfer in the dual S-scheme heterojunction composites were elucidated using density functional theory (DFT) and in situ irradiated X-ray photoelectron spectroscopy (ISI-XPS). Furthermore, electron spin resonance (ESR) and burst experiments verified h + , ·O 2 - , and ·OH as the primary active species in the catalytic process. The ABr/BTO/BSO composites demonstrated exceptional photocatalytic redox capabilities, completely degrading rhodamine B (RhB) and achieving degradation rates of 77.21% for tetracycline (TC) and 81.04% for Cr (VI). Both experimental and theoretical analyses confirmed the intrinsic efficacy of photo-induced electron movement within the composites. This research introduces innovative design concepts and strategies for the advanced exploration of electron channel transfer in ABr/BTO/BSO ternary composites and the development of novel composite photocatalytic systems.
研究领域:
材料科学
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环境科学
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理论化学
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DOI
PubMed
高影响因子
CHEMISTRY & BIODIVERSITY
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2024
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IF 2.3
Jingmei Li,Yuhao Ji,Baitao Xian,Jianlai Liu,Deye Qu,Deming Han
In this experiment, Bi2Sn2O7/ZnO composite photocatalytic materials were synthesized by a hydrothermal method and characterized by XRD, SEM, and EDS, etc. The prepared Bi2Sn2O7/ZnO has a nanorod structure and high phase purity. The photocatalytic antimicrobial performance of Bi2Sn2O7/ZnO against bacteria and fungi under visible light was significantly better than that of single Bi2Sn2O7 and ZnO. In particular, 1000 mg/L 1:3 Bi2Sn2O7/ZnO showed an antimicrobial rate of more than 97% against Escherichia coli, Staphylococcus aureus, and Candida albicans, which are widely present in the nature. The free radical trapping experiments were selected and the antimicrobial mechanism was investigated, and the results showed that the antimicrobial process of the Bi2Sn2O7/ZnO system was regulated by the free radicals such as ·OH, h+, and e-, which were generated by its unique photocatalytic activity. Finally, MTT cytotoxicity experiments demonstrated that the Bi₂Sn₂O₇/ZnO composite was not toxic to cells. In addition, the antimicrobial performance of Bi2Sn2O7/ZnO on real livestock wastewater and the real-life application of the prepared Bi2Sn2O7/ZnO PCL composite antibiotic film for antimicrobial treatment of freshly cut fruits' surfaces under visible light were experimentally investigated. This study provides a new idea for Bi2Sn2O7/ZnO as a photocatalytic antimicrobial agent.
研究领域:
微生物学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
MATERIALS RESEARCH BULLETIN
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2015
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IF 2.288
Weicheng Xu,Jianzhang Fang,Ximiao Zhu,Zhanqiang Fang,Chaoping Cen
A series of novel p−n junction photocatalysts BiOI/Bi 2 Sn 2 O 7 (BiOI/BSO) were successfully fabricated via a facile hydrothermal method. The phase structures, morphologies and optical properties of the as-prepared samples were studied by XRD, TEM, HRTEM, BET, XPS, UV–vis DRS and photoluminescence (PL) spectroscopy. The results showed that BiOI/BSO heteronanostructures displayed much higher photocatalytic activity than pure BSO and BiOI for the degradation of rhodamine B (RhB). The best photocatalytic activity of BiOI/BSO with almost 99.9% RhB degradation situated at molar percentage ratio of 4% after 6 h irradiation. The enhanced photocatalytic performance of BiOI/BSO could be mainly attributed to the formation of the heterojunction between p-BiOI and n-BSO, which effectively restrains the recombination of photoinduced electron–hole pairs. Moreover, the study of radical scavengers affirmed that h + and •O 2 − were the primary reactive species for the degradation of RhB.
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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2020
·Vol. 44
·期 26
·11196-11202
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IF 3.288
Chengyan Wu,Qianhong Shen,LiXin Yu,Feilong Huang,Changteng Zhang,Jiansong Sheng,Fang Zhang,Di Cheng,Hui Yang
Bi2Sn2O7 with flower-like hierarchical architecture was successfully synthesized via a facile template-free hydrothermal method. The structure–property relationships of such unique structured Bi2Sn2O7 were studied. The results show that the 3D flower-like Bi2Sn2O7 hierarchical architecture is composed of 2D Bi2Sn2O7 nanosheets, which increases the specific surface area of Bi2Sn2O7, which is about four times that of Bi2Sn2O7 nanoparticles. Meanwhile, 2D nanosheets result in an effective separation of photo-generated carries, and the average carrier lifetime of flower-like Bi2Sn2O7 is 3.26 ns, which is longer than that of Bi2Sn2O7 nanoparticles (1.88 ns). Therefore, the flower-like Bi2Sn2O7 displays excellent photocatalytic activity for degrading tetracycline hydrochloride compared with Bi2Sn2O7 nanoparticles. The active species trapping test confirmed that h+ and ˙O2− are dominant reactive species in the photocatalytic reaction. Moreover, this novel structure can also integrate the advantages of nano-sized materials with high surface area and micro-sized materials with good dispersion, exhibiting excellent properties of high photocatalytic activity, easy recyclability and good catalytic stability.
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
Catalysts
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2024
·Vol. 14
·期 4
·275
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IF 3.8
Ning Li,Wenwen Zhao,Jiatong Zhang,Xuhui Liu,Yangqin Gao,Lei Ge
The photocatalytic removal of nitric oxide (NO) is a promising technology used to reduce the level of harmful gaseous pollutants in parts per billion (ppb). As a potential photocatalyst, Bi2Sn2O7has a low quantum efficiency due to its fast recombination rate of photo-generated carriers. In this paper, Bi/Bi2Sn2O7was prepared by the in situ deposition of Bi. The structural, electrical, and optical properties of the attained sample were investigated through a series of analyses. The results demonstrate that Bi nanoparticles not only enhance the photoabsorption ability of Bi2Sn2O7due to their surface plasmon resonance (SPR) effect, but also improve its photocatalytic activity. Photocatalytic performance was evaluated by the oxidation of NO at ppb level under xenon lamp (λ > 400 nm) irradiation. It was found that the photocatalytic NO removal rate increased from 7.2% (Bi2Sn2O7) to 38.6% (Bi/Bi2Sn2O7). The loading of Bi promotes the separation and migration of photo-generated carriers and enhances the generation of •O2−and •OH radicals responsible for the oxidation of NO. The Bi/Bi2Sn2O7composite photocatalyst also exhibits excellent photocatalytic stability, which makes it a potential candidate for use in air purification systems.
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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纳米技术
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产品关联
DOI
高影响因子
ACS Omega
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2023
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IF 4.1
Baikang Zhu,Qinbin Dong,Jianghua Huang,Mengmeng Yang,Xianlei Chen,Chunyang Zhai,Qingguo Chen,Bohong Wang,Hengcong Tao,Li Chen
Fabrication of S-scheme heterojunctions with enhanced redox capability offers an effective approach to address environmental remediation. In this study, high-performance Bi2Sn2O7/β-Bi2O3 S-scheme heterojunction photocatalysts were fabricated via the in situ growth of Bi2Sn2O7 on β-Bi2O3 microspheres. The optimized Bi2Sn2O7/β-Bi2O3 (BSO/BO-0.4) degradation efficiency for tetracycline hydrochloride was 95.5%, which was 2.68-fold higher than that of β-Bi2O3. This improvement originated from higher photoelectron–hole pair separation efficiency, more exposed active sites, excellent redox capacity, and efficient generation of ·O2– and ·OH. Additionally, Bi2Sn2O7/β-Bi2O3 exhibited good stability against photocatalytic degradation, and the degradation efficiency remained >89.7% after five cycles. The photocatalytic mechanism of Bi2Sn2O7/β-Bi2O3 S-scheme heterojunctions was elucidated. In this study, we design and fabricate high-performance heterojunction photocatalysts for environmental remediation using S-scheme photocatalysts.
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
PubMed
高影响因子
JOURNAL OF MATERIALS RESEARCH
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2021
·Vol. 36
·期 16
·3366-3379
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IF 3.089
Wu Chenyan,Huang Feilong,Shen Qianhong,Yu LiXin,Zhang Changteng,Sheng Jiansong,Cheng Di,Yang Hui
Abstract The magnetic photocatalysts play an important role in practical application. Herein, a novel magnetic hierarchical Z-scheme NiFe 2 O 4 @Bi 2 Sn 2 O 7 heterojunction photocatalyst was fabricated by hydrothermal strategy. The structure, micromorphology and physical properties of the as-prepared products were analysed, and the photocatalytic performance was carried out via photocatalytic degradation of tetracycline hydrochloride under visible-light irradiation. The longest average carrier lifetime of the NiFe 2 O 4 @Bi 2 Sn 2 O 7 composite is about 2.9 times longer than that of pure Bi 2 Sn 2 O 7 (2.45 ns), thereby achieving the enhanced photocatalytic activity. After a four-cycle photocatalytic degradation reaction, the NiFe 2 O 4 @Bi 2 Sn 2 O 7 composite still exhibits excellent photocatalytic activity and structural stability due to its magnetic property, and this feature is conducive to its practical application. The results demonstrate that NiFe 2 O 4 nanoparticles are uniformly loaded on flower-like hierarchical Bi 2 Sn 2 O 7 , and thus not only forming nanosized Z-scheme NiFe 2 O 4 @Bi 2 Sn 2 O 7 heterostructure, but also making the composite material magnetic. This work provided new perspectives about construction of heterojunction photocatalysts. Graphic Abstract
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
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2022
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IF 5.141
Chenyan Wu,Qianhong Shen,Jie Liu,Libei Jiang,Jiansong Sheng,Yue Li,Hui Yang
Regulating the migration behavior of photo-generated carriers is an effective strategy to design high-performance photocatalysts. Herein, ZnO/Bi 2 Sn 2 O 7 type II heterojunction was fabricated through the composite of wide-bandgap ZnO and narrow-bandgap Bi 2 Sn 2 O 7 , and the charge transfer mechanism was changed from type II into Z-scheme by photo-depositing Ag nanoparticles on ZnO/Bi 2 Sn 2 O 7 composite. The loaded Ag nanoparticles not only expanded absorption of ZnO to visible-light range through surface plasmon resonance effect, but also were served as bridge for photo-generated carriers, thereby changing transfer behavior of charge carriers in ZnO/Bi 2 Sn 2 O 7 composite system. Compared with ZnO/Bi 2 Sn 2 O 7 type II heterojunction, Ag@ZnO/Bi 2 Sn 2 O 7 Z-Scheme heterostructure promoted separation efficiency of photo-generated carriers, and the average carrier lifetime was increased by 2.0 times. The mineralization rate of ciprofloxacin by Ag@ZnO/Bi 2 Sn 2 O 7 composite was 2.6 times higher than that of ZnO/Bi 2 Sn 2 O 7 composite, which reached 16.9 times that of pure Bi 2 Sn 2 O 7 photocatalyst, exhibiting stronger redox ability.
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
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
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IF 4.175
Yabin Zhang,Chan Xu,Fangcheng Wan,Di Zhou,Liu Yang,Haoshuang Gu,Juan Xiong
Flower-like Bi 2 Sn 2 O 7 /Bi 2 WO 6 hierarchical composites with Bi 2 Sn 2 O 7 nanoparticles on Bi 2 WO 6 nanosheet by different Bi 2 Sn 2 O 7 contents were synthesized via a facile two-step hydrothermal method . The composite of Bi 2 Sn 2 O 7 /Bi 2 WO 6 exhibits higher photocatalytic activity toward Rhodamine B (RhB) under visible light than pristine Bi 2 WO 6 and Bi 2 Sn 2 O 7 . Comparatively, 7% Bi 2 Sn 2 O 7 /Bi 2 WO 6 showed the highest photocatalytic activity owing to the best separation efficiency of photogenerated charges. The role of the active species in the process of the degradation is evaluated by using different types of active species scavengers which revealed that the holes ( h + ) and hydroxyl radicals ( OH) were the main active species responsible for the photodegradation of RhB. The photocatalytic mechanism is further proposed based on impedance spectroscopy (EIS) and the calculated energy bands by Mott-Schottky plot, which unfolds the charge transfer and the active species formed in the photocatalytic process. Furthermore, the as-obtained photocatalysts showed good photocatalytic activity after three recycles.
研究领域:
材料化学
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光催化
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纳米材料
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环境功能材料
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能源与催化
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DOI
高影响因子
危险品化学品经营许可证（带存储）