CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yongjin Chen,Yuanmin Zhu,Abbas Nasir,Renhong Liang,Ping Liao,Liwen Zhu,Songbai Hu,Shusheng Pan,Shanming Ke,Ren-Kui Zheng,Mao Ye
Piezocatalysis has emerged as a green and efficient technology to address widespread environmental challenges and public health concerns. However, scalable fabrication of high-performance, cost-effective piezocatalysts remains challenging. Herein, we propose a facile strategy utilizing rare-earth element doping to significantly enhance the piezocatalytic performance of BaTiO 3 ceramic powder synthesized via solid-state sintering. The Er-doped BaTiO 3 demonstrates exceptional RhB dye degradation with a rate constant of 257 × 10 −3 min −1 , representing a 4.9-fold improvement over pristine BaTiO 3 and surpassing reported lead-free perovskite piezocatalysts. Remarkably, even at ultralow piezocatalyst loading (2.5 mg 1 mol% Er-BaTiO 3 in 5 mg/L RhB), the system maintains a high reaction rate constant of 241 × 10 −3 min −1 . This performance enhancement originates from Er 3+ -induced polarization intensification, oxygen vacancy proliferation, and charge carrier density elevation. Our work establishes an effective strategy for developing high-efficiency piezocatalytic materials with promising applications in wastewater remediation.
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
ACS Omega
·
2021
·
IF 3.512
Zhihui Qin,Weiwei Su,Ping Liu,Jinming Ma,Yaru Zhang,Tifeng Jiao
Iron ions play an important role in our lives. Excessive or lack of iron ion intake leads to many diseases. At the same time, the water environment is easily polluted by these metal ions with the acceleration of industrialization. Therefore, the detection of iron ions in the water environment and the human body is particularly important. In this paper, we prepared a RhB-EDA fluorescent probe by condensing rhodamine B (RhB) with ethylenediamine (EDA) for high recognition of Fe3+. A RhB-EDA molecule itself is colorless and has no fluorescence emission in an alcohol solution. When Fe3+ was added, the lactam ring structure of the fluorescent probe opened, and the UV and fluorescence spectra changed. At the same time, the color of the mixed solution gradually deepened toward pink. Therefore, dual spectral detection and naked-eye observation of Fe3+ were realized. In addition, with the decrease of the pH value and the prolongation of chelating time, the ultraviolet absorbance and fluorescence emission intensity were enhanced and the color of the mixed solution deepened. The RhD-EDA fluorescent probe is simple and accurate and provides good technical support for the detection of Fe3+.
研究领域:
分析化学
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环境科学
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生物医学
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DOI
PubMed
高影响因子
Russian Journal of Physical Chemistry A
·
2025
·Vol. 99
·期 3
·634-645
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IF 0.8
Lili Li,Jiang Ke,Xi Wen,Li Jia Xin,Shu Jing
The synthesized SrTiO 3 /PANI composite materials through a simple in situ oxidation process. A series of analytical techniques, including XRD, FT-IR, SEM, TEM, XPS and so on, were employed to investigate the morphological and structural characteristics of the composite materials and their elemental composition. The results of the UV irradiation of RhB demonstrated that pure SrTiO 3 exhibited a degradation rate of 73.35% within 60 min. The SrTiO 3 /PANI (20%) composite exhibited a 98.18% degradation rate in 60 min, indicating the optimal conditions for photocatalytic degradation of RhB. The free radical scavenging experiment demonstrated that superoxide anion ( \( \cdot {\kern 1pt} {\text{O}}_{2}^{ - }\) ) is the dominant active species, the photocatalytic mechanism of Type-Z heterojunction was described in detail according to the band gap and free radical capture experiments of SrTiO 3 and PANI.
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
CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Chunran Zhao,Chenrui Wang,Xujie Ren,Shude Yuan,Leihong Zhao,Lvchao Zhuang,Botao Teng,Ying Wu,Yiming He
Fabricating heterophase junctions proves to be an efficient strategy for achieving efficient charge separation and enhancing the catalytic activity of photocatalysts. Surprisingly, this approach is rarely utilized in the field of piezocatalysis. In this work, a novel ZnSnO 3 heterophase junction catalyst was fabricated by combining rhombohedral (R-ZnSnO 3 ) and orthorhombic (O-ZnSnO 3 ) phases for efficient piezo and piezo-photocatalytic RhB degradation and N 2 fixation. The piezocatalytic RhB degradation rates of ZnSnO 3 heterophase catalysts are 5.6 and 3.6 times higher than those of O-ZnSnO 3 and R-ZnSnO 3 , respectively, with similar enhancements observed in piezocatalytic N 2 fixation. The coupling of R-ZnSnO 3 and O-ZnSnO 3 does not increase the piezoelectric properties; however, an S-scheme structure formed at the interface. Under the combined effects of band bending, interface electric fields, and Coulomb attraction, electrons and holes migrate and achieve effective spatial separation. This result supports the energy band theory over the induction charge theory, contributing to the ongoing debate in piezocatalytic mechanisms. Electrochemical analyses and piezo-photocatalytic tests further indicate that ZnSnO 3 heterophase junctions exhibit a synergistic effect between piezocatalysis and photocatalysis. This synergy can be attributed to the complementary effects of photoinduced carrier generation and piezoelectric field-assisted carrier separation. Hydroxyl radicals, superoxide radicals, and holes serve as the primary active species responsible for piezocatalytic RhB degradation through a mechanism similar to photocatalysis. Theoretical calculations reveal that the Sn site on the surface of O-ZnSnO 3 acts as the active site within the ZnSnO 3 heterophase junction, providing valuable insights for future catalyst development. This work offers a deeper understanding of the synergistic mechanisms in piezo-photocatalysis, presenting a promising route for efficient environmental and energy applications.
研究领域:
材料科学
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环境科学
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催化化学
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2020
·Vol. 28
·期 13
·15731-15742
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IF 3.056
Yang Hang,Zhang Yi,Xia Shibin
In this study, the co-effect of clay mineral-based photocatalyst and humic acid on the photodegradation of dye was revealed for the first time. The clay mineral-based photocatalyst, maifanite/g-C 3 N 4 , was prepared using the co-calcining method. The physical and chemical properties of the maifanite/g-C 3 N 4 photocatalysts with various ratios were characterized by multiple characterization methods, including SEM, XPS, BET, UV-Vis, FTIR, contact angle, and XRD. The respective degradation experiment of humic acid and RhB was performed using maifanite/g-C 3 N 4 photocatalysts. The degradation process of mixture solution of humic acid and RhB was measured using EEM and UV-vis. The result indicates that in the presence of humic acid, low ratio of maifanite/g-C 3 N 4 inhibits the production of by-products derived from the interaction of humic acid and the degradation of RhB. However, high ratio of maifanite/g-C 3 N 4 is not conducive to the degradation of RhB. The ratio of 1:3 for maifanite/g-C 3 N 4 is optimal for the photodegradation of RhB in the presence of humic acid. This article provides a new perspective to develop the co-effect of clay mineral and humic acid in the photodegradation of organic pollutant.
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 PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2017
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IF 2.625
Yida Lu,Yiping Feng,Fengliang Wang,Xuegang Zou,Zhi-Feng Chen,Ping Chen,Haijin Liu,Yuehan Su,Qianxin Zhang,Guoguang Liu
In this study, a novel and highly efficient ternary photocatalytic ZnFe 2 O 4 /TiO 2 /CDs nanocomposite was successfully synthesized by a hydrothermal method. The properties and structures of the samples were characterized by X-ray diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), Fourier transform infrared spectrometry (FT-IR), and photoluminescence spectrum (PL). The UV–vis diffuse reflectance spectrum was used to demonstrate that carbon quantum dots could increase the absorption of visible light wavelengths. When compared with TiO 2 /3.00 wt%CDs and ZnFe 2 O 4 /TiO 2 nanocomposites, the ternary photocatalysts exhibited the enhanced photocatalytic activity under solar-spectrum irradiation. A low CDs content of 3.00 wt% in the ternary photocatalysts possessed excellent performance in the decomposition of Rhodamine B (RhB). Act as donator and receiver, CDs can efficiently improve the ability of electron transfer and separate the electron-hole pairs. OH and O 2 − were confirmed to be involved in the photocatalytic degradation of RhB base on the Electron spin resonance (ESR) tests, and the photocatalytic mechanism of the ZnFe 2 O 4 /TiO 2 /3.00 wt%CDs was proposed. After four sequential operational cycles, the ZnFe 2 O 4 /TiO 2 /CDs maintained its photocatalytic efficiency, indicating its high photocatalytic stability. Therefore, our results provide a high efficient photocatalytic nanocomposite that synthetized by a facile method, and have implications in the removal of environmental persistent pollutants under ternary photocatalysts mediated solar 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
FOOD CHEMISTRY
·
2023
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IF 8.8
Lin Chen,Zhenyu Mao,Yi Ma,Huibo Luo,Suyi Zhang,Danqun Huo,Changjun Hou
The classification and verification of segmented Baijiu hold significant importance as they profoundly influence the blending and overall quality of the Baijiu. Our scholarly investigation yielded a fluorescent sensor with three luminescent modes by integrating Tb 3+ and RHB into UiO-66. The interplay between carboxyl-containing compounds and RHB/Tb@TLU-2 orchestrates a harmonious molecular association, where the convergence of carboxyl groups with Tb 3+ yields a resonating impact on the antenna effect of BDC-SO 3 - . Furthermore, the acidity and alkalinity of reactants induced a charge transfer interaction between BDC-NH 2 and Zr 4+ and led to structural changes in RHB/Tb@TLU-2, resulting in observable fluorescence signal variations across the three emission centers. The sensor array successfully identified eight organic acids, achieving an impressive 97.5 % accuracy in discerning segmented Baijiu samples from four Baijiu pits. This meticulous methodology prioritizes simplicity, swiftness, and effectiveness, paving the path for comprehensive segmented Baijiu analysis in the esteemed realm of Brewing production.
研究领域:
化学
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食品科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 27
·12306-12314
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IF 2.7
Ran Gao,Wensong Lin,Yeheng Zhang,Xin Mai,Junnan Chen,Huanxia Lin
Bi5O7I doped with Zn2+ (Zn2+/Bi5O7I) was prepared using a precipitation calcination method. Its photocatalytic activity was improved by adjusting the band gap of Bi5O7I, and its photocatalytic performance was evaluated by degrading RhB. The experimental results showed that Zn2+/Bi5O7I-8 had the highest photodegradation efficiency, and the degradation rate for RhB after exposure to light for 30 minutes was 91% and reached 100% in 60 minutes. The degradation rate constant k of Zn2+/Bi5O7I-8 reached 0.10813 min−1, which is 13 times more than that of Bi5O7I. As a result of Zn2+ being added into Bi5O7I, the band gap of Zn2+/Bi5O7I became narrower than that of Bi5O7I, and the photogenerated electrons and holes were successfully prevented from recombining; therefore, the photocatalytic activity of Zn2+/Bi5O7I was higher than that of Bi5O7I. After four rounds of photocatalytic experiments, the photocatalytic efficiency of Zn2+/Bi5O7I-8 remained high. The composition and microstructure of the materials were characterized using XRD, FTIR, XPS, SEM, and TEM. The optical properties and degradation mechanism of the material were investigated using DRS, PL, photocurrent response, and active substance capture experiments. A suggested mechanism for the photocatalytic degradation of RhB is presented.
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
ChemistrySelect
·
2022
·Vol. 7
·期 29
·e202202457
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IF 2.307
Guowei Zhi,Lingyun Hao,Wenjing Chen,Qinyang Sheng,Liu Liu,Wei Wang,Hanyu Yao
Graphical In this work, an effective and solar light-driven Z-scheme heterojunction photocatalyst CAS/ZnO was prepared by two steps microwave irradiation method. As the ZnO concentration increased, the absorbance decreased but the specific surface area increased. 3 M displayed the highest degradation rate (100 %), highest rate constant (0.021 min −1 ) and optimum stability. Also, mechanism of the Z-scheme migration of photon-generated carrier and photocatalytic degradation was proposed. This paper provides a new Z-scheme heterojunction CAS/ZnO photocatalyst for the treatment of organic pollutants The heterojunction structure photocatalysts are very promising for photocatalytic degradation dyes to resolve the organic industrial wastewater. In this work, an effective and solar light-driven Z-scheme heterojunction photocatalyst CAS/ZnO was prepared by two steps microwave irradiation method. The ZnO nanosheets were successfully compounded with CAS tetragonal particles aggregate. As the ZnO concentration increased, the absorbance decreased but the specific surface area increased. Rhodamine B (RhB) was tested for photodegradation by photocatalysts under a solar simulation in 120 min, and 3 M displayed the highest degradation rate (100 %), highest rate constant (0.021 min −1 ) and optimum stability. Furthermore, the main reactive species were superoxide radicals (O 2 −. ) and hydroxyl radicals (HO⋅). Also, mechanism of the Z-scheme migration of photon-generated carrier and photocatalytic degradation was proposed. This paper provides a new Z-scheme heterojunction CAS/ZnO photocatalyst for the treatment of organic pollutants.
研究领域:
环境科学
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材料科学
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光催化
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废水处理
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Xin Yan,Shuai Zhang,Liangfeng Pan,Tao Ai,Zhuo Li,Yanhui Niu
Improving the separation efficiency of photo-generated charge carriers is an important strategy to enhance the photocatalytic performance. In this paper, the NaNbO 3 /WO 3 composite photocatalyst was prepared via a hydrothermal method , which exhibited a substantial increase in photocatalytic activity through the synergetic effect of visible light irradiation and ultrasound vibration. The XRD, FT-IR, Raman, SEM, XPS , UV–vis DRS, and photoluminescence spectroscopy results indicated that a large number of WO 3 particles were tightly attached to the surface of NaNbO 3 nanowires in the NaNbO 3 /WO 3 composite catalyst. Under the piezo-photocatalysis condition, the degradation efficiency of Rhodamine B (RhB) by 5 % NaNbO 3 /WO 3 was significantly improved, reaching 73.7 % within 120 min. Meanwhile, the piezo-photocatalytic degradation efficiency of the NaNbO 3 /WO 3 composite catalyst was increased by 30.1 % compared to single photocatalysis , and the corresponding reaction rate constant (K) was 2.23 times than that of single photocatalysis. In addition, quenching tests showed that h + was the primary active species in piezo-photocatalytic process. The significant enhancement of piezo-photocatalytic performance was attributed to the piezoelectric field caused by the bending deformation of the NaNbO 3 nanowires, which was an important driving force for photo-generated charge carrier separation. Furthermore, the production of multiple redox active sites simultaneously improved the photocatalytic performance.
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
APPLIED SURFACE SCIENCE
·
2015
·
IF 2.711
Dong Ma,Yanxiang Zhang,Mengchun Gao,Yanjun Xin,Juan Wu,Nan Bao
A composite of reduced graphene oxide (RGO) and InVO 4 nanofiber was successfully synthesized by an electrospinning technique. The as-collected fibers were calcined at 420 °C in air and then calcined at 550 °C in nitrogen gas to remove polyvinyl pyrrolidone (PVP), which could enable InVO 4 to crystallize and protect the RGO from oxidation. The InVO 4 in the composite illustrated a hollowed-out fibrous morphology and orthorhombic phase, and RGO nanosheets were nested in the InVO 4 nanofibers. The hybrid RGO could produce more hydroxyl groups and a higher oxygen vacancy density on the surface of RGO/InVO 4 composite. Compared with pure InVO 4 , the light absorption range of the as-prepared RGO/InVO 4 composite was expanded. In Rh B degradation, the RGO/InVO 4 hybrid nanofibers displayed a higher photocatalytic activity than pure InVO 4 nanofibers. The enhanced photocatalytic activity might be ascribed to the role of RGO as an electron transporter and acceptor in the composite, which could effectively inhibit the charge recombination and facilitate the charge transfer. The exported electron could attack an O 2 molecule to facilitate the generation of •O 2 − and •OH for the photodegradation process of Rh B.
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
·
2021
·
IF 6.707
Ni Han,Qinfang Zhang
In this work, bismuth-based oxychloride photocatalysts such as BiOCl, Bi 3 O 4 Cl, Bi 12 O 17 Cl 2 , Bi 24 O 31 Cl 10 and Bi 12 O 15 Cl 6 were prepared by a solvothermal (or hydrothermal) method with the controlled amount between Bi(NO 3 ) 3 ·5H 2 O and NH 4 Cl. The as-prepared photocatalysts were analyzed by X-ray diffraction (XRD) patterns, field emission scanning electron microscope (FESEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance (UV–vis DRS) and photoluminescence (PL) spectra. The photocatalytic activity was evaluated by degrading rhodamine B (RhB) molecules under visible light irradiation. Among those bismuth-based oxychloride photocatalysts, Bi 12 O 15 Cl 6 showed the highest RhB photodegradation activity of 99.85% within 30 min, and its first-order photodegradation rate constant value was 2.30, 5.51, 4.31 and 4.72 folds higher than those of BiOCl, Bi 3 O 4 Cl, Bi 12 O 17 Cl 2 and Bi 24 O 31 Cl 10 , respectively. Bi 12 O 15 Cl 6 had the larger BET specific surface area and pore volume than other samples, which could provide more reactive sites. According to the results of free radical capture experiments, h + played a major role and O 2 - contributed to a lesser extent in the degradation of RhB. Thus, a possible photocatalytic mechanism was proposed. This result showed that the crystal, band structure and morphology of BiOCl, Bi 3 O 4 Cl, Bi 12 O 17 Cl 2 , Bi 12 O 15 Cl 6 and Bi 24 O 31 Cl 10 had a great influence on the photocatalytic performance. This research suggested that the various influencing factors should be studied to better understand the photochemical properties of a photocatalysts. The present work may make some contributions to the field of photocatalysis technology.
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
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