DIAMOND AND RELATED MATERIALS
·
2023
·
IF 4.1
Afzal Ali,Adeel Ahmed,Muhammad Usman,Tahir Raza,Muhammad Safdar Ali,Abdulhmeed Al-Nahari,Changbao Liu,Dong Li,Chunhu Li
Unintentional leakage of dyes into the aquatic environment has exacerbated global contamination of water resources in recent years, posing a serious danger to aquatic life and human health. As a result, highly adaptable and effective measures are required to address the worldwide environmental challenge posed by dye usage. Herein, we have adopted hydrothermal technique to synthesize a visible light-induced catalyst based on the Ce 0.2 Co 0.8 Fe 2 O 4 /g-C 3 N 4 composite. The catalysts were characterized in terms of their morphological, structural, and photoluminescence properties. The photocatalytic proficiency of the Ce 0.2 Co 0.8 Fe 2 O 4 /g-C 3 N 4 composite was determined by its ability to degrade rhodamine B (RhB) under visible light irradiation. Ce 0.2 Co 0.8 Fe 2 O 4 /g-C 3 N 4 exhibited superior degradation potential, degrading RhB to 90.27 % in 60 min, compared to CoFe 2 O 4 /g-C 3 N 4 (72.28 %), Ce 0.2 Co 0.8 Fe 2 O 4 (64.45 %) and CoFe 2 O 4 (56.63 %) under predetermined reaction conditions (catalyst dosage = 0.4 g/L, RhB concentration = 20 mg/L, pH = 7, T = 25 ± 1 °C). The substantial increase in photocatalytic potential was attributed mostly to the interfacial migration of photo-induced charge carriers from g-C 3 N 4 to Ce 0.2 Co 0.8 Fe 2 O 4 , which may facilitate electron migration. The as-synthesized catalyst demonstrated outstanding stability in four successive cycles. This study may provide a low-cost approach for fabricating visible-light responsive catalysts for use in environmental remediation applications.
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RSC Advances
·
2022
·Vol. 12
·期 54
·35260-35269
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IF 4.036
Yuyan Yu,Shumin Ye,Zhiwen Sun,Jinkun You,Weili Li,Yu Song,Hongyan Zhang
Pesticide residue detection is one of the main safety issues in the utilization of medicinal plants. In this work, a highly selective and sensitive aptasensor for acetamiprid determination was designed. The mechanism of the proposed method is based on the fluorescence resonance energy transfer (FRET) between gold nanoparticles (AuNPs) and rhodamine B (RB). Aptamers protect AuNPs from salt-induced aggregation, which causes fluorescence quenching of RB by the AuNPs via surface energy transfer. In the absence of acetamiprid, AuNPs were coated with aptamers on the surface and dispersed in NaCl solution. At this time, the dispersed AuNPs could perfectly quench the fluorescence intensity of RB. In contrast, in the presence of acetamiprid, aptamers specifically combine with acetamiprid to form a complex. With a high salt concentration, AuNPs would be aggregated without aptamer protection, weakening the RB quenching effect. Therefore, the concentration of acetamiprid could be obtained from the change in fluorescence intensity in the system. A fluorescent sensing method was established with a linear range from 0.1 to 3 μg mL−1, and the LOD was 0.0285 μg mL−1. The recoveries of acetamiprid in traditional Chinese medicine (TCM) samples were 96.23–105.75%. This method has great application value for the detection of acetamiprid in a complex sample matrix.
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PHOTOCHEMISTRY AND PHOTOBIOLOGY
·
2022
·
IF 3.521
Yu Zhang,Dekun Cheng,Zhangtie Wang,Yiwen Guo,Ming Chang,Ruijie Liu
Excessive ultraviolet (UV) exposure is the primary environmental factor that contributes to skin aging. Orbitides have been considered as important functional components in linseed, and they are complex and multiple. In this study, linseed orbitides (LOs) were divided into oxidized linseed orbitides (OLOs) and reduced linseed orbitides (RLOs) and used to investigate protection against ultraviolet B-induced photoaging in zebrafish. First, the results of the zebrafish embryo acute toxicity test showed that the OLOs had obvious embryo toxicity compared with RLOs. And RLOs had better effect in ultraviolet B-treated zebrafish, which may significantly reduce the reactive oxygen species levels and inhibit the degradation of collagen. Besides, we also found that RLOs could effectively inhibit the oxidation of proteins and lipids and regulate the activity of antioxidant enzymes. Furthermore, neutrophil recruitment to the dorsal and caudal fin regions was observed in UVB-treated zebrafish, and RLOs effectively alleviated this migration. In conclusion, RLOs have strong photoprotective effects and potential to be used as antiphotoaging ingredients.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 24
·15703
·
IF 6.208
Yingjie Su,Yangyang Zheng,Meiqin Feng,Siji Chen
Luffa leaf (LL) is an agricultural waste produced by loofah. In this work, LL was used as biomass carbon source for biochars for the first time. After carbonization, activation, and chemical co-precipitation treatments, a magnetic lignocellulose-derived hierarchical porous biochar was obtained. The specific surface area and total pore volume were 2565.4 m2/g and 1.4643 cm3/g, and the surface was rich in carbon and oxygen functional groups. The synthetic dye rhodamine B (RhB) and the antibiotic tetracycline hydrochloride (TH) were selected as organic pollutant models to explore the ability to remove organic pollutants, and the results showed good adsorption performances. The maximum adsorption capacities were 1701.7 mg/g for RhB and 1755.9 mg/g for TH, which were higher than most carbon-based adsorbents. After 10 cycles of use, the removal efficiencies were still maintained at more than 70%, showing good stability. This work not only verified the feasibility of lignocellulose LL as a carbon source to prepare biochar but also prepared a magnetic hierarchical porous adsorbent with good performances that can better treat RhB and TH, which provided a new idea and direction for the efficient removal of organic pollutants in water.Keywords:lignocellulose;magnetic biochar;hierarchical porous;organic pollutants;efficient removal
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jinxiang Zuo,Jimin Shen,Jing Kang,Pengwei Yan,Binyuan Wang,Shuyu Wang,Donglei Fu,Weiqiang Wang,Tianhao She,Shengxin Zhao,Zhonglin Chen
Catalysts used to degrade pollutants are easily limited by surface reaction sites. Herein, we modified the catalyst by doping boron (B) to overcome the above shortcomings. B-doped NiFe 2 O x catalysts with oxygen vacancies (OVs) were synthesized by the sol–gel method to activate peroxymonosulfate (PMS) for 2,4-dichlorophenoxyacetic acid (2,4-D) degradation. 2,4-D is a widely used herbicide in agricultural production. However, it was difficult to be degraded and dangerous to human health. The B-doped NiFe 2 O x (especially 10B-NiFe 2 O x ) exhibited a high catalytic capacity for 2,4-D, aceclofenac (ACF), bisphenol S (BPS) and amidotrizoic acid (DTZ). And the removal rate of 2,4-D in 10B-NiFe 2 O x /PMS system was increased by 26.4 percentage points compared with NiFe 2 O 4 /PMS system. It was verified that B-O-Fe and B-O-Ni were formed. And OVs were formed on the surface of the catalyst after B doping. SO 4 − was confirmed as the major reactive oxygen species (ROS) by quenching experiments. Metal sites and OVs were conducive to the generation of SO 4 − . According to the in situ analysis of the interfacial reaction mechanism, the –OH structure of HSO 5 − and H 2 O could be adsorbed on the OVs sites and combined with the adjacent Lewis acid sites. The cycle of Fe 2+ /Fe 3+ and Ni 2+ /Ni 3+ promoted the interfacial electron transfer of the combined HSO 5 − , and thus generating SO 4 − . The degradation pathways of 2,4-D were proposed through its intermediates and density functional theory (DFT) calculation by the Fukui function. The degradation mechanism included decarboxylation, dechlorination, dehydroxylation, hydroxylation, H-abstraction, bond cleavage and ring opening. This study verified the possibility of highly efficient pollutant degradation by activating PMS with B-doped modified catalyst.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2022
·Vol. 33
·期 10
·7900-7912
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IF 2.779
Hu Xuemei,Bao Jianqin,Qiao Junqiang
We report the experimental realization of using copper zinc tin sulfide (Cu 2 ZnSnS 4 ) material for sonocatalytic application for the first time. Hierarchical Cu 2 ZnSnS 4 microspheres were synthesized via a facile one-pot hydrothermal method and characterized systematically. Aggregated Cu 2 ZnSnS 4 nanosheets with an average thickness of ~ 20 nm formed a highly open hierarchical structure. The hierarchical Cu 2 ZnSnS 4 microspheres displayed remarkable sonocatalytic activity both in Rhodamine B degradation and in Cr(VI) reduction. The detailed sonocatalytic experiments revealed that Rhodamine B dye degraded up to 96.4% in 14 min and Cr(VI) reduced up to 98.7% in 10 min and both Rhodamine B degradation and Cr(VI) reduction followed pseudo-first-order kinetics. The reusability tests confirmed that the hierarchical CZTS microspheres have proper stability after 4 consecutive cycles. Moreover, the effects of initial dye concentration, various scavengers, and oxidants on the sonocatalytic RhB degradation process have also been investigated. Furthermore, the plausible mechanism of the sonocatalytic degradation in the presence of hierarchical CZTS microspheres was proposed.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2022
·
IF 5.876
Shan Xue,Zhilin Xie,Xiaoyu Ma,Yinqi Xu,Shiyu Zhang,Qina Jia,Rui Wan,Haisheng Tao
Carbon-based catalyst-activated persulfate-driven advanced oxidation processes (AOPs) have received great attention for wastewater treatment . Herein, a magnetic Fe-doped activated carbon (FeC 2 O 4 /AC) was successfully prepared via a conventional method using FeC 2 O 4 as an iron source and Zoysia sinica as biomass. FeC 2 O 4 /AC was characterized and used to activate peroxymonosulfate (PMS) for Rhodamine B (RhB) degradation. The influence of various factors on RhB removal was evaluated, including initial pH, temperature, coexisting ions, RhB concentration, PMS concentration and catalyst dosage. Under the optimized condition, the removal efficiency of FeC 2 O 4 /AC for RhB (300 mg/L) reached up to 97% within 150 min. Radical scavenging results and EPR experiments confirm that singlet-oxygen ( 1 O 2 ) was confirmed as the main active species in the degradation of RhB in the FeC 2 O 4 /AC/PMS system. More importantly, the possible route of 1 O 2 generation was revealed: the synergistic effect of Fe species and the activated carbon acts as a crucial part in promoting the PMS activation and contributing to the generation of 1 O 2 . The reaction rate constant ( k obs ) of FeC 2 O 4 /AC is about 7.4 times that of pure AC, and the excellent leaching rate of Fe 2+ (<0.09%) proves that this material is an excellent catalyst. This research on the development of Fe-doped activated carbon with high activity and high stability has profound implications for the effective treatment of organic wastewater.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2022
·
IF 5.895
Yixin Shi,Jiaying Ren,Baomin Zhao,Taihai Zhu,Hang Qi
Long-term exposure to sunlight and/or blue light causes vision damage to people of all ages. Dietary pigments and polyphenols have been shown to have photoprotective potential for eyes; however, many unknowns regarding the protective mechanism remain. In this study, we used ultraviolet B (UVB) irradiation-induced retinal Müller cells (RMCs) to screen for dietary polyphenols and pigment compounds with effective photoprotective activity. Fucoxanthin (FX) was shown to have the best therapeutic effect, and the mechanism was evaluated via lipidomics analysis. Both intra- and extracellular ROS, mitochondrial depolarization, and DNA damage induced by UVB irradiation were inhibited by FX. Meanwhile, FX modulated the MAPK signaling pathway, which is correlated with apoptosis and inflammation. Our lipidomics data revealed that FX regulated lipid metabolism disorder and protected the membrane structure. These results confirm the effective photoprotective effects of FX, which may lead to new insights into FX-functionalized photoprotective foods.
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Evidence-based Complementary and Alternative Medicine
·
2022
·
IF 2.65
Fei Kong,Meng Zhao
Myocardial ischemia/reperfusion (MI/R) injury is a common clinical problem after myocardial infarction without effective therapy. Loureirin B (LrB) is a kind of flavonoid with anti-inflammatory and antifibrotic activities. However, the effect of LrB on MI/R and its underlying mechanism remains elusive. In the present study, a mouse model of MI/R was established by coronary artery occlusion. Administration of LrB (0.5 mg/kg or 1 mg/kg) for 4 weeks effectively improved left ventricular (LV) function and reduced myocardial infarction in MI/R mice. MI/R-induced expression of IL-6, TNF-α, and IL-1β in the hearts was reduced by LrB treatment. Histological analysis showed that LrB attenuated myocardial collagen deposition. LrB downregulated fibronectin, collagen I, collagen III, and α-SMA expression. Notably, LrB inhibited the expression of profibrotic plasminogen activator inhibitor-1 (PAI-1), transforming growth factor (TGF)-β1, TGF-β1R, and p-Smad2/3. Consistently, LrB inhibited the activation of TGF-β1/Smad signaling pathway and the expression of fibrosis-related proteins in angiotensin (Ang) II-treated cardiac fibroblasts (CFs). Overexpression of PAI-1 abolished the effects of LrB on Ang II-treated CFs, suggesting that LrB may function through regulating PAI-1. These results indicated that LrB may alleviate MI/R-induced myocardial fibrosis by inhibiting PAI-1/TGF-β1/Smad signaling pathway. Thus, LrB may be a potential drug in the treatment of MI/R injury.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Lantao Liu,Yaping Lu,Shuaize Wang,Yinghui Ding,Yaxin Chen,Daping Qiu,Dengke Wang,Jin Niu,Jiapeng Zhang,Xiaohong Chen,Huaihe Song
Heteroatom-rich carbon materials deliver superior potassium storage capacity owing to the abundant active sites, but their stability and conductivity are damaged because of the numerous defects and distortion of π-conjugated system. In this work, we amended the adverse influences of heteroatoms on carbon materials through the B, N stabilization effect. Due to an amending effect of B atoms on the N -doped carbon matrix, the integrity of the carbon skeleton and stability of the system are significantly enhanced, and the undesirable defects are transformed into favorable active sites, resulting in the simultaneous improvement of K + storage capacity, rate performance and cyclic stability. The stabilized materials have a highly reversible carbon structure and fast K + transfer kinetics, leading to high reversible capacity (300 mA h g −1 at 0.1 A g −1 ), good rate performance (107.2 mA h g −1 at 10 A g −1 ) and superior cyclic stability (75.3 % capacity retention from cycle 11 to 2000 at 1 A g −1 ). Consequently, the constructed devices perform excellent energy densities of 158.8 and 40.7 Wh kg −1 under power densities of 100 and 11250 W kg −1 , respectively. This work proposes an effective strategy for significantly improving heteroatom-rich carbon materials, which broadens its application fields in high-performance potassium ion storage.
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RSC Advances
·
2022
·Vol. 12
·期 20
·12655-12662
·
IF 4.036
Huihui Tao,Zhao Zhang,Qiao Cao,Lingfei Li,Shihao Xu,Changlong Jiang,Yucheng Li,Yingying Liu
A novel carbon dot/Rhodamine B-based ratiometric fluorescent probe was developed for a highly sensitivity and selective detection of nitrite (NO2−). The probe showed colour changes from blue to orange under ultraviolet light in response to NO2− with a detection limit as low as 67 nM in the range of 0 to 40 μM. A ratiometric fluorescent test paper was successfully prepared using the probe solution, which demonstrated its feasibility towards a rapid and semi-quantitative detection of NO2− in real samples.
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CATALYSIS TODAY
·
2022
·
IF 6.562
Yunfei Ma,Wenhui Yue,Zehong Xu,Ziwei Ye,Jinlong Zhang
Composite nanoparticles consisting upconversion nanoparticles (β-NaYF 4 :Yb/Er) and nitrogen doped TiO 2 nanoparticles were constructed via a chemical assembly method. Efficient energy transfer was enabled since the upconverted energy matched up with the band gap of N-TiO 2 . This enables the resulting composite nanoparticles to possess excellent Rhodamine B (RhB) degradation activity under near infrared (NIR) light irradiation.
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