OPTICAL MATERIALS
·
2022
·
IF 3.754
Hao Hu,Chengdong Xu,Jiacheng Jin,Mingchen Xu,Yue Cheng,Weiwei Ji,Zhencen Ding,Min Shao,Yushan Wan
In this paper, BiOIO 3 and Bi 2 O 4 nanosheet monomers were synthesized and used to prepare several BiOIO 3 /Bi 2 O 4 composites by an ultrasonic impregnation method. The resulting photocatalytic materials were characterized by XRD , SEM, TEM, XPS , FTIR, PL , UV–Visible diffuse reflectance spectroscopy (DRS), and BET. The photocatalytic activity of the BiOIO 3 /Bi 2 O 4 composites was evaluated by the degradation of rhodamine B (RhB) and ciprofloxacin (CIP) under simulated sunlight and compared to the activities of BiOIO 3 and Bi 2 O 4 operating alone. The results showed that Bi 2 O 4 was closely attached to the surface of BiOIO 3 , and the composite had a good degradation effect on RhB and CIP, with the best performing material being a 0.9-BiOIO 3 /Bi 2 O 4 composite, which achieved 97.6% degradation of RhB within 60 min and 85.6% degradation of CIP within 120 min. The observed degradation performance was considerably higher than that of other composite samples and monomers due to the good energy level matching of the BiOIO 3 /Bi 2 O 4 composite, which broadened the light response interval, improved the electron transfer rate and enhanced the photocatalytic activity. Free radical capture experiments showed that the ·O 2 - and h + free radicals significantly contributed to the degradation of pollutants. Cyclic tests showed that the composite also had good stability. The results of this study showed that bismuth-based photocatalysts might be used for environmental remediation.
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高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Danping Wu,Quan Chen,Min Wu,Peng Zhang,Liping He,Yihui Chen,Bo Pan
The reactivity of pyrogenic carbon has attracted a great deal of research attentions recently. The oxygen-containing structures are rich on the surface of biochars, and involved in accepting and donating electrons during the interactions between biochar and organic contaminants . In this work, the species and content of oxygen-containing functional groups on biochar surface were regulated through chemical modification, and batch sorption/degradation experiments were carried out for rhodamine B (RhB). Based on the comparison of surface functional groups, biochars produced below 200 °C mediated RhB degradation through phenol hydroxyl group, while semiquinone and carboxylic acid groups were the main reaction active sites for biochars produced at higher than 500 °C. Considering that various biochar properties play roles in mediating organics degradation , the strategies in manipulating biochar properties should be carefully considered.
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高影响因子
ACS Omega
·
2022
·
IF 4.132
Zhiwei Liu,Na Li,Ping Liu,Zhihui Qin,Tifeng Jiao
Detection of iron ions in aqueous solutions is of significant importance because of their important role in the environment and the human body. Herein, a fluorescent rhodamine B-functionalized chitosan nanoparticles probe is reported for the efficient detection of iron ions. The chitosan nanospheres-rhodamine B (CREN) was prepared by grafting rhodamine B onto the surface of chitosan nanospheres through an amidation reaction. The as-prepared CREN fluorescent probes exhibit high fluorescence intensity under ultraviolet light. When iron ions are added to the CREN solution, they can be coordinated with weak-field ligands such as N and O on the surface of chitosan nanoparticles (CSNP) by a high-spin method. The self-assembly of Fe3+ on the surface of the CREN led to the generation of single electrons and the presence of high paramagnetism, resulting in fluorescence quenching. The quenching effect of Fe3+ on the CREN fluorescent probe can achieve the efficient detection of Fe3+, and the detection limit reaches 10–5 mol/mL. Moreover, this fluorescence quenching effect of Fe3+ on the CREN fluorescent probe is specific, which could not be disturbed by other metal ions and counteranions.
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2020
·
IF 3.232
Jiwen Hu,Xili Yu,Xin Zhang,Changcheng Jing,Tingting Liu,Xiaochun Hu,Senlin Lu,Kajsa Uvdal,Hong-Wen Gao,Zhangjun Hu
A rhodamine B-based sensor ( RS ) was designed and synthesized by a combination of the spirolacton rhodamine B (fluorophore) and multidentate chelates (ionophore) with high affinity towards Hg 2+ . In the presence of Hg 2+ , the resulting red-orange fluorescence (under UV light) and naked eye red color of RS are supposed to be used for quantitative and qualitative measurement of Hg 2+ . Further fluorescent titration and analysis demonstrate that RS can selectively detect Hg 2+ within 1 s with a low limit of detection (LOD) of 16 nM in acetonitrile media, meanwhile, the association constant (K a ) was calculated to be 0.32 × 10 5 M −1 . More importantly, the resultant complex ( RSHg ) of RS and Hg 2+ has also been successfully applied to detect limited water content in acetonitrile solution.
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高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2022
·Vol. 136
·期 1
·449-463
·
IF 1.843
Wang Jiaqi,Cheng Tiexin,Zhou Guangdong
In this work, calcium nitrate and sodium silicate were employed as the sources of calcium and silicon, respectively, to synthesize sheet calcium silicate hydrate (CSH) by simple chemical precipitation. The obtained sheet CSH exhibited fast adsorption rate and large adsorption capacity, the maximum adsorption capacity is 556.3 mg g −1 , for Cu(II) ions. The CSH after adsorption of Cu(II) ions (CSH-Cu) was characterized by XRD, FTIR, SEM, N 2 adsorption and XPS, and which could be converted into a catalyst for rhodamine B (RhB) degradation by a simple high-temperature activation process. The results showed that the catalyst give the excellent reusability, and after four cycles of the catalyst, more than 90% of the RhB could still be degraded within 240 min. The free radical trapping experiments showed that all of the ·OH, ·O 2 − and h + generated on the surface of the catalyst played an essential role in the degradation process, while h + made the largest contribution. Based on this, the degradation mechanism of RhB is also proposed.
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高影响因子
Analytical Methods
·
2014
·Vol. 6
·期 21
·8627-8632
·
IF 1.938
Jinjiao Shi,Ligang Chen
In this study, we investigated the possibility of reverse micelles which were used for the determination of rhodamine B in lipsticks followed by high performance liquid chromatography (HPLC). The reverse micelle of surfactant sodium 1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonate (AOT) was formed in n-hexane. First, the samples were preprocessed by reverse micelle extraction, and then rhodamine B was extracted from the mixture with methanol by back-extraction. The effects of different parameters including the concentration of surfactant, pH, amount of potassium chloride, ultrasonic time and type of organic solvents were evaluated and optimized during reverse micelle formation. The limit of detection of rhodamine B was 0.01 μg g−1. The intra-day and inter-day precisions expressed as relative standard deviations were 3.6% and 4.5%, respectively. The recovery of rhodamine B obtained was 95.0%. The reverse micelle method proposed for the determination of rhodamine B in real samples of lipsticks has the advantages of simplicity, speed, high precision, low detection limit and the use of inexpensive equipment.
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高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2025
·
IF 3.5
Zhang Yu,Xiao Xinyan,Wang Fei,Lu Ting,Cheng Xia
Photocatalytic degradation of dye wastewater has great potential due to its eco-friendly, simple, and solar energy-based characteristics. In this work, an energy-saving and convenient precipitation method was explored to compound two classical photocatalyst materials BiOBr and CAU-17. The Z-scheme heterojunction decreases the agglomeration of the BiOBr nanosheets and addresses the issue of the low photogenerated carrier participation rate of CAU-17. The solvothermal method was used to prepare CAU-17 nanorods, and then BiOBr nanosheets were grown on them at room temperature to fabricate BiOBr/CAU-17 composites. The samples were characterized by XRD, SEM, TEM, XPS, DRS, PL, EIS, and other techniques. The photodegradation performance was tested using Rhodamine B (RhB) as the model pollutant. The 80% BiOBr/CAU-17 composite (0.1 g/L) exhibited a degradation rate of 99.41% for RhB under simulated sunlight in 60 min, with an apparent rate constant of 0.0631 min⁻ 1 , which is 3.45 times faster than pure BiOBr and 315.5 times faster than CAU-17. Free radical capture and EPR tests confirmed that · O 2 ⁻ and h⁺ were the main active species in the process, and a reasonable photocatalytic mechanism is proposed. Additionally, cyclic tests are conducted to confirm the stability and durability of the composite, proving the potential of BiOBr/CAU-17 composites for efficient and sustainable photocatalytic applications.
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高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2025
·
IF 6.2
Changsheng Zhang,Shuang Liang,Haijun Liu,Yuxuan Hu,Xinzhong Zhang,Fengjian Luo,Zhengyun Lou,Li Zhou,Mei Yang
Mercury (Hg2+) and thiophanate-methyl (TM) are recognized as widespread pollutants in the environment and food. Here, a novel ratiometric fluorescent sensor has been developed for the detection of Hg2+ and TM using nitrogen-doped carbon dots (N-CDs) and Rhodamine B (RhB). In the presence of Hg2+, the fluorescence quenching of N-CDs was caused by photoinduced electron transfer, while the fluorescence recovery was triggered by the competitive binding of TM and N-CDs to Hg2+. However, the RhB fluorescence in the system was unaffected by Hg2+ and acted as a reference for internal calibration. Under optimized conditions, the sensor displayed a favorable linear dependence on Hg2+ and TM within the concentration ranges of 0.50–50 μM and 0.50–3.0 mg/L, with detection limits of 0.15 μM and 0.017 mg/L, respectively. And the sensor exhibited remarkable selectivity, with insignificant interference from coexisting metal ions or pesticides. This work presents a novel dual-functional ratiometric sensor for cascade detection of Hg2+ and TM in diverse environments, such as water, cucumber, and rice, highlighting its potential in practical applications.
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PubMed
高影响因子
Materials
·
2025
·Vol. 18
·期 23
·5313
·
IF 3.2
Shasha Hong,Yuan Jiao,Ruyu Li,Peng Lei,Chuan Dong,Shang Guo,Shaomin Shuang
Synergetic therapeutic study using multifunctional nanoplatforms has been developed as an innovative modality for effective cancer treatment to improve the clinical efficiency of anticancer drugs and reduce severe off-target side effects. Herein, an artificial nanoplatform (denoted as PPy-RhB-PDA-CD-LA) was prepared by grafting β-cyclodextrin (β-CD) derivatives and lactobionic acid (LA) on the surface of rhodamine B (RhB)-doped polypyrrole nanoparticles (PPy-RhB NPs) using polydopamine (PDA) as the intermediate linker. Doxorubicin (DOX) was selected and successfully loaded onto the nanoplatforms with a high loading content of 327 mg/g. Furthermore, significant NIR light-triggered release of DOX was observed in a weak acidic tumor microenvironment. The nanoplatform exhibited superior photostability with a high photothermal effect of 51.7% under irradiation by a 808 nm laser and a competent temperature sensitivity (SR is 1.44% °C−1) under a single wavelength excitation. MTT assay against SMMC-7721 cells clearly illustrated that the nanoplatform had low cytotoxicity at a high level (200 μg/mL) after 24 h and high therapeutic efficacy of chemo-phototherapy. Thus, it is highly promising for use in biomedical applications.
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PubMed
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2025
·
IF 4.9
Hou Chengmin,Ren Chuangchuang,Bai Yuan
Industrial pigment wastewater poses a serious threat to ecosystems and human health. This study aimed to develop efficient and recyclable adsorbents for the treatment of such wastewater. Initially, a magnetic carrier, W@Fe 3 O 4 , was synthesized by loading Fe 3 O 4 onto wood fibers (W) via co-precipitation. Subsequently, three types of acrylic-modified magnetic wood fiber adsorbents (W@Fe 3 O 4 -g-pGMA, W@Fe 3 O 4 -g-pAA, W@Fe 3 O 4 - g -pHEMA) were fabricated by grafting poly(glycidyl methacrylate) (pGMA), poly(acrylic acid) (pAA), and poly(2-hydroxyethyl methacrylate) (pHEMA), respectively, onto the W@Fe 3 O 4 surface through surface-initiated polymerization. The successful preparation of the materials was confirmed by FTIR, TG, and SEM. Adsorption experiments demonstrated a significant enhancement in the adsorption performance of all three modified materials for Methylene Blue (MB) and Rhodamine B (Rh B). The optimal adsorption conditions were identified as follows: adsorbent dosage of 10 mg, initial MB concentration of 20 mg/L, initial Rh B concentration of 30 mg/L, pH 7, and temperature of 35 °C. Under these optimal conditions, the removal efficiency of MB by W@Fe 3 O 4 - g -pGMA reached 83.47%, with an adsorption capacity of 16.15 mg g −1 , while the removal efficiency of Rh B by W@Fe 3 O 4 - g -pAA reached 90.08%, with an adsorption capacity of 17.95 mg g −1 . The adsorption kinetics were best described by the pseudo-second-order model. Isotherm analysis indicated that the adsorption of MB onto W@Fe 3 O 4 - g -pGMA was better fitted by the Langmuir model, whereas the adsorption of Rh B onto W@Fe 3 O 4 - g -pAA was more consistent with the Temkin model, suggesting a predominantly chemisorption mechanism. After five consecutive adsorption-desorption cycles, the removal rates for MB by W@Fe 3 O 4 - g -pGMA and for Rh B by W@Fe 3 O 4 - g -pAA remained above 70%, indicating excellent recyclability and stability of the materials. This study provides valuable insights for the design of functional adsorbents and their potential application in the advanced treatment of pigment-containing wastewater.
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高影响因子
DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Jiaqi Yu,Shiwen Wang,Minghong Xie,Qiong Wu,Qing Shu
To overcome rapid charge recombination, a direct Z -scheme Zn 3 V 2 O 8 /g-C 3 N 4 heterojunction was designed, thus boosting photocatalytic performance. A suite of composite photocatalysts, with meticulously tuned Zn 3 V 2 O 8 mass ratios (x = 40, 60, and 80 wt%), were synthesized via a facile hydrothermal route. Comprehensive characterization, including XRD, SEM, UV–Vis DRS, PL spectroscopy, and photo-electro-chemical measurements confirmed the formation of intimate interfacial contact between Zn 3 V 2 O 8 and g-C 3 N 4 . This tailored interfacial architecture effectively promotes visible-light absorption and facilitates the separation and transfer of photo-generated charge carriers. Notably, the Zn 3 V 2 O 8 (60 wt%)/g-C 3 N 4 composite achieved 91% degradation of RhB within 120 min under simulated solar irradiation, substantially outperforming pristine g-C 3 N 4 (57%). Radical trapping experiments and electron spin resonance (ESR) spectroscopy identified superoxide radicals ( O 2 − ) and holes (h + ) as the primary active species. Based on these findings, a direct Z -scheme charge transfer mechanism is proposed, wherein photoinduced electrons in the conduction band of Zn 3 V 2 O 8 recombine with holes in the valence band of g-C 3 N 4 . This synergistic recombination pathway preserves the most energetic electrons in g-C 3 N 4 and holes in Zn 3 V 2 O 8 , endowing the system with strong redox capacity for the simultaneous generation of O 2 − and OH radicals, which collaboratively drive the efficient degradation of RhB. This study provides a rational design framework for constructing high-performance g-C 3 N 4 -based Z -scheme photocatalytic systems.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2026
·
IF 2.6
Ziyuan Li,Jinran Zhang,Weiwei Zhao,Hongbo Jiang,Meijuan Tian,Jingman Pang,Weixing Zhao
In this study, TiO2 and anhydrous Na2CO3 were used as precursor materials to investigate the optimal conditions for synthesizing sodium titanate (Na2Ti3O7) by the molten salt method. The sodium titanate reactant was acid-exchanged to prepare titanic acid (H2Ti3O7), which was then calcined at different temperatures for varying durations. The resulting product was characterized by XRD, SEM, TEM, FE-SEM, and FTIR, confirming the formation of an H2Ti3O7/TiO2 composite. The photocatalytic degradation performance, mechanism, and stability of the H2Ti3O7/TiO2 composite were evaluated using rhodamine B as a model pollutant. The results indicated that the composite calcined at 800 °C for 3 h exhibited the fastest degradation rate. After the addition of peroxymonosulfate, the degradation efficiency reached approximately 100% within 30 min, which was higher than those of pure H2Ti3O7 and TiO2. The composite retained 94.56% of its original efficiency after four cycles, indicating excellent catalytic degradation ability. Quenching experiments revealed that the main active species were SO4˙−, ˙O2−, and ˙OH, and a possible degradation mechanism was proposed.
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高影响因子
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