CRYSTENGCOMM
·
2011
·Vol. 14
·期 3
·1038-1044
·
IF 4.006
Ming Ge,Lu Liu,Wei Chen,Zhen Zhou
With Rhodamine B as a model compound, the photocatalytic oxidation of organic contaminants in aqueous solution was investigated within a cooperating porous BiVO4/H2O2 system under simulated sunlight irradiation. Peanut-shaped porous BiVO4 was prepared through a simple template-free solvothermal method with high yield, and was used in the cooperating catalyst/H2O2 system. The possible formation mechanism of peanut-shaped BiVO4 nanostructures was investigated. In the peanut-shaped BiVO4/H2O2 system, nearly complete degradation of Rhodamine B was observed after 60 min of irradiation under sunlight irradiation. The as-obtained porous BiVO4 photocatalyst displayed higher photocatalytic activity than those of the reference product hydrothermally synthesized and the photocatalyst P25 in the same catalyst/H2O2/sunlight system. The photocatalytic processes of the BiVO4/H2O2/sunlight system may consist of both OH˙ oxidation and direct hole attack. In addition, the peanut-shaped porous BiVO4 nanostructures were stable and maintained high photocatalytic efficiency during repeated recycles in the H2O2-containing system.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Yuting Li,Jiaming Song,Xin Zhao,Bingda Li,Zhuo Wang,Juanjuan Yang,Guoshuai Ban,Feng Teng,Jialong Ma,Chaoying Meng,Honggang Ye,Guangde Chen,Zhonghua Dai,Yu Cong
With increasing environmental pollution, the utilization of green techniques, such as photocatalysis, is required to degrade harmful sources without secondary pollution. In this study, we synthesized an efficient photocatalyst, i.e., a h-BN/BiPO4 heterostructure modified by Ag nanoparticles at the interface (Ag/BN/BPO) by photodeposition and a hydrothermal method, and investigated photocatalytic degradation performance for rhodamine B dye (RhB). It was found that 95% of RhB was removed by Ag/BN/BPO (optimal ratio) after 60 min of light exposure. Compared to BiPO4 and BN/BiPO4, the removal efficiency was improved by 50 and 30%, respectively. The high photocatalytic degradation activity of Ag/BN/BPO could be possibly attributed to the synergistic effect of the improved separation efficiency of electron–hole pairs by the special heterostructure design and the increased adsorption capacity due to the large specific surface area of the layered h-BN. This study provided a possible route for the development of highly efficient photocatalysts for the degradation of organic pollutants.
✓ 已验证
产品关联
DOI
高影响因子
Environmental Science-Nano
·
2024
·Vol. 11
·期 7
·3104-3113
·
IF 5.8
Feijin Zhou,Wenying Cui,Chenggang Liu,Cheng Yao,Chan Song
Exploring novel nanozymes with high activity and stability is necessary in sensing to replace some natural enzymes. Here, iron phthalocyanine (FePc) was supported on two-dimensional (2D) reduced graphene oxide (rGO), synthesizing FePc@rGO nanocomposites by a one-pot method. FePc@rGO nanocomposites not only can catalyze the oxidation of colorimetric substrates, but also can degrade rhodamine B (RhB) with the help of permonosulfate (PMS). With the introduction of rGO, FePc was loaded on their surfaces. Compared with free FePc, FePc supported on rGO has smaller size, resulting in its larger specific surface area. These factors are better for exposing the active sites of catalysts and increasing the mass transfer rate between catalysts and substrates. Therefore, FePc@rGO nanocomposites exhibit enhanced catalytic activity. Based on the oxidase-like activity of FePc@rGO nanocomposites, a sensing platform was constructed for the detection of thiosulfate (S2O32−) with a detection limit of 0.124 μM and a detection range of 2–50 μM. In addition, this sensing system can be used for the visual detection of S2O32− by a portable smartphone. Furthermore, the degradation efficiency of FePc@rGO nanocomposites to RhB could be as high as above 94% for just 10 min when the pH ranged from 3 to 10. This work provides an avenue for the synthesis of novel catalysts as multifunctional nanozymes for detection and organic pollutant degradation.
✓ 已验证
产品关联
DOI
高影响因子
Environmental Technology & Innovation
·
2025
·
IF 7.1
Shuzhen Yang,Bingjing Tian,Yanfang Huang,Bingbing Liu,Shengpeng Su,Wenjuan Wang,Guihong Han
The persistent dye rhodamine B (RhB) in textile wastewater poses severe ecological threats, demanding efficient and sustainable treatment technologies. This study synthesized a novel trimetallic Cu-Fe-Co catalyst via a nitrogen-atmosphere co-reduction method. The catalyst’s unique advantage lies in the synergistic effects of Cu, Fe, and Co, which significantly enhance catalytic performance. The redox-active phases of Cu, combined with the Fenton-like reactivity of Fe, are further optimized by Co doping to improve reactive oxygen species (ROS) generation and electron transfer efficiency. Characterization revealed a dendritic structure dominated by Cu, Cu₂O, and FeO phases, with Co-induced lattice expansion (Δ d / d = +0.25 %) enhancing surface reactivity. Under optimized conditions (pH 3, 1.5 g/L catalyst, 20 mg/L RhB), the ternary Cu-Fe-Co catalyst achieved 99.8 % RhB degradation within 40 min, with high mineralization efficiency (46.5 % TOC removal, 82.1 % COD removal). Mechanistic studies demonstrated that Co incorporation promotes the conversion of superoxide radicals (·O₂⁻) into long-lived singlet oxygen (¹O₂), synergistically enhancing oxidative effects from ·OH and ¹O₂, while in situ H₂O₂ generation drives radical chain reactions. Compared to binary catalysts, the ternary system exhibits superior degradation kinetics for RhB and maintains 95.8 % degradation efficiency even after five cycles. This study provides new insights into trimetallic catalyst design, highlighting its practical potential for wastewater treatment.
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 16
·2204
·
IF 4.9
Weidi Zhang,Tiantian Zhou,Jianhao Qiu
The practical application of powdered photocatalysts is significantly hindered by challenges in recyclability and structural instability. This work proposes a sustainable immobilization strategy by integrating BiVO4nanoparticles into a sodium alginate (SA) aerogel scaffold through a facile freeze-drying approach. The abundant hydroxyl/carboxyl groups of SA enable uniform dispersion of BiVO4within the porous network, while the aerogel architecture enhances light-harvesting efficiency and mass transfer kinetics. Innovatively, peroxymonosulfate (PMS) was introduced to synergistically couple photocatalysis with sulfate radical-based advanced oxidation processes (SR-AOPs), where the photogenerated electrons from BiVO4effectively activate PMS to yield high-activity ·SO4−radicals. The optimized BiVO4/SA aerogel achieves nearly complete removal of Rhodamine B within 2 h under visible light, which is competitive to pure BiVO4powders. In addition, the mechanically robust aerogel exhibits exceptional reusability, retaining ~90% efficiency after five cycles without structural collapse. This work provides a paradigm for designing recyclable photocatalyst carriers with dual oxidation pathways, demonstrating significant potential for industrial wastewater treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Catalysts
·
2025
·Vol. 15
·期 9
·875
·
IF 4
Kunyang Li,Di Wang,Ning Tang,Zhou Zhou,Wen Zhang,Bohan Liu,Yiying Yue
Photocatalytic technology offers significant potential for pollutant remediation through efficient, cost-effective mineralization but faces inherent limitations, including catalyst agglomeration and rapid charge recombination. To address these challenges, we developed activated carbon-modified porous graphitic carbon nitride (APCN) synthesized through the co-polycondensation of dicyandiamide with NH4Cl and fir-wood-derived activated carbon (AC). The incorporated AC effectively prevented the agglomeration of carbon nitride frameworks, thereby enhancing the specific surface area (SBET) of APCN. This matrix was subsequently composited with hydrothermally prepared (1T/2H) mixed-phase MoS2through ultrasonication, forming a MoS2/APCN heterostructure. Characterizations including Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), and N2adsorption–desorption isotherms (BET) confirmed that MoS2was successfully loaded onto APCN via an ultrasonic synthesis method. The composite exhibited outstanding photocatalytic activity, degrading 95.5% RhB in 40 min (pH = 7) and 97.4% in 25 min (pH = 3.5), with 87.3% efficiency retention after four cycles (pH = 7). Crucially, AC enhanced visible-light absorption and functioned as an electron-mediating component. Photoelectrochemical analyses and radical-trapping experiments confirmed a direct Z-scheme charge transfer mechanism, wherein conductive AC accelerates electron transport and suppresses carrier recombination. This study establishes both an efficient RhB degradation photocatalyst and a sustainable strategy for valorizing agricultural waste in advanced material design.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2018
·Vol. 8
·期 9
·697
·
IF 3.504
Jun Yang,Taiping Xie,Chenglun Liu,Longjun Xu
Dy-doped BiOCl powder photocatalyst was synthesized A one–step coprecipitation method. The incorporation of Dy3+replaced partial Bi3+in BiOCl crystal lattice system. For Rhodamine B (RhB) under visible light irradiation, 2% Dy doped BiOCl possessed highly efficient photocatalytic activity and photodegradation efficiency. The photodegradation ratio of RhB could reach 97.3% after only 30 min of photocatalytic reaction; this was more than relative investigations have reported in the last two years. The main reason was that the 4f electron shell of Dy in the BiOCl crystal lattice system can generate a special electronic shell structure that facilitated the transfer of electron from valance band to conduction band and separation of the photoinduced charge carrier. Apart from material preparation, this research is expected to provide important references for RhB photodegradation in practical applications.Keywords:Dy3+;BiOCl;photocatalyst;RhB photodegradation;doping modification
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 34
·16171-16183
·
IF 3.553
Liu Shengjun,Zou Qichao,Ma Yan,Sun Wen,Li Yu,Zhang Jian,Zhang Cheng,He Lifang,Sun Yudie,Chen Qian,Liu Bo,Zhang Hexin,Zhang Kui
Metal–organic frameworks (MOFs) are a new type of porous crystal materials that have been widely used in various fields. Owing to their adjustable porous structure, MOF photocatalysts with high catalytic activity have become a research hotspot. In this study, NH 2 -MIL-125/CoS x samples were investigated as a novel visible light-responsive catalyst for the removal of organic dye. The NH 2 -MIL-125/CoS x -20 composites showed the best photodegradation efficiency, where photodegradation of the rhodamine B reached 95.4% in 45 min. CoS x was able to effectively extend the wavelength absorption range of NH 2 -MIL-125 and effectively separate the photogenerated electrons and holes and that could lead to the improved photocatalytic performance of the composites. The reactive superoxide radical ( · O 2− ) was identified as the main active species using reactive species capture experiments, and a reasonable photocatalytic mechanism was proposed. This paper is intended to guide the development of organic–inorganic hybrid materials for environmental remediation.
✓ 已验证
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2021
·Vol. 31
·期 5
·2129-2139
·
IF 3.543
Li Xiansong,Liu Shiquan
Iron oxide-silica hybrid xerogels were repeatedly synthesized using the liquid recovered during the drying of wet gels obtained in the previous run. The hybrid xerogels were characterized by SEM, FT-IR, and N 2 -sorption, DR UV–Vis techniques. The results indicate that the hybrid xerogels possess high surface areas from 514 to 601 m 2 /g with highly dispersed Fe species. The synthesized iron oxide-silica hybrid xerogels showed high adsorption capacity and Fenton-like catalytic activity toward Rhodamine B in aqueous solution over a wide pH range of 3–11. It was demonstrated that the hybrid xerogels remained excellent recyclability and stability for 5 cycles, with above 99% of the degradation efficiency being achieved and low iorn-leaching per cycle.
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Xiaoting Mo,Yue Tian,Heming Wang,Jiahao Dai,Fuzhen Cao,Rongyi Huang,Lizhen Long,Jun Liu
The controllable synthesis TiO 2 with desired morphology and phase composition is essential for achieving the properties required in various applications. Herein, TiO 2 nanotube arrays were synthesized through anodic oxidation followed by calcination in an argon atmosphere. The effects of fluoride ion (F - ) concentration in the electrolyte, oxidation time, and calcination temperature on morphology and phase composition were systematically investigated. The optimal conditions for producing well-defined mixed-phase TiO 2 nanotubes were determined to be anodizing at 60 V for 2 h in an electrolyte consisting 0.4 wt% F - . The mixed-phase TiO 2 obtained at 600 °C exhibited the highest photocurrent, which is 2.7 and 3.4 times that of single anatase phase and rutile phase, respectively. The total amount of hydrogen evolution over the optimized mixed-phase TiO 2 photoelectrode reached 387.1 μmol/cm 2 within 160 min under UV–vis illumination at an applied bias of −1.5 V. The corresponding degradation efficiency for RhB (Rhodamine B) at the platinum electrode was approximately 13 %. The enhanced PEC (photoelectrocatalytic) performance of mixed-phase TiO 2 can be attributed to the synergistic effects arising from extended visible-light absorption, a well-defined one-dimensional nanotube structure, and efficient separation of photogenerated carriers at hetero-phase junction. This work provides valuable guidance for synthesizing mixed-phase TiO 2 electrode using controllable methods.
✓ 已验证
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Huimei Mo,Zhanhong Chen,Xiaoying Liao,Shiting Liang,Jin Xu,Haolang Zeng,Shuqian Shen,Junhui Yi
Morphology engineering and heteroatom doping are established strategies for developing high-performance photocatalysts. In this study, phosphorus-doped three-dimensional porous g-C₃N₄ nanosheets were synthesized by calcining melamine–cyanuric acid supramolecular precursors, followed by gas-phase phosphidation using NaH₂PO₂ at 300 °C. The optimized material exhibited exceptional photocatalytic activity, achieving over 99 % Rhodamine B degradation within 40 min under visible light, significantly outperforming undoped 3D and bulk g-C₃N 4 . It also showed the highest photocurrent density and prolonged carrier lifetime, indicating enhanced charge separation. The catalyst maintained >90 % efficiency after four cycles, demonstrating remarkable stability. Mechanistic studies revealed that holes and superoxide radicals serve as the primary active species, with hydroxyl radicals also participating. The enhanced performance is attributed to the synergistic effect of P-doping—which modifies the electronic structure—and the 3D porous framework, which facilitates mass transfer and exposes active sites. This work provides a scalable route to efficient photocatalysts for environmental remediation.
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Shunhang Wei,Jian Gao,Pingru Wu,Bo Yao,Haitao Xu,Yongsheng Tan,Shiyan Liu,Rong Wu,Yawei Wang,Lei Wang,Zebo Fang,Qifeng Liang
Although TiO 2 is a wide band gap semiconductor , it demonstrates photodegradation activity under visible light irradiation after dye sensitization. Compared with esterification between the surface hydroxyl group of TiO 2 and the carboxylic group of dyes, electrostatic interaction between TiO 2 and dye shows better photosensitized performance. In this work, Bi/Al co-doping anatase titania (Ti 1-x Bi 2x/3 Al 2x/3 O 2 (0 ≤ x ≤ 0.3)) is designed to enhance the electrostatic interaction. The effect of Al ions is to enhance the solubility of Bi 3+ into titania nanocrystals . A new band gap is generated after high concentration of Bi element doping , which not only promotes the absorption of visible light, but also improves the utilization of photogenerated carriers. Based on the results of transmission electron microscopy , light absorption, photodegradation activity and density functional theory calculations, it is found that bismuth dopant is the electron capture site. It first accumulates electrons through photocatalytic degradation reaction to enhance electrostatic adsorption between the catalyst and the positively charged dye molecules, and finally realizes high-efficiency photosensitization degradation of Rhodamine B. In addition, the sensitized titania has excellent photodegradation recyclability.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）