BIORESOURCE TECHNOLOGY
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2019
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IF 6.669
Hong-Yu Ren,Ying-Qi Dai,Fanying Kong,Defeng Xing,Lei Zhao,Nan-Qi Ren,Jun Ma,Bing-Feng Liu
In this study, the growth and lipid accumulation of Scenedesmus sp. using different nanoparticles and light sources were investigated. Xenon lamp can produce a broad illumination spectrum, and exhibited better performance than light-emitting diode. SiC and g-C 3 N 4 nanoparticles improved the biomass and lipid accumulation, whereas TiO 2 and TiC nanoparticles had inhibitory influence on microalgae. Lipid production can be improved by oxidative stress produced by combination of nanoparticles and xenon lamp irradiation. At the optimal SiC nanoparticles concentration of 150 mg L −1 and photoperiod of 6:18 h, the maximum biomass concentration and total lipid content reached 3.18 g L −1 and 40.26%, respectively. The addition of SiC nanoparticles could promote the substrate utilization rate and induce stress condition, thereby enhancing the activity of acetyl-CoA carboxylase and lipid biosynthesis. This research shows that SiC nanoparticles addition combined with xenon lamp illumination is a promising strategy to promote microalgal growth and lipid accumulation.
研究领域:
生物技术
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环境科学
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DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2019
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IF 2.931
Hongwei Hu,Xinmeng Tian,Yixuan Gong,Guolan Ren,Jiangong Liang
Despite extensive research on carbon dots (CDs), rare studies have been performed on the photostability of CDs. Here, the photostability of CDs synthesized with 3-aminobenzoic acid were systematically investigated under different pH conditions (5.0, 7.4 and 9.0). The results showed that under Xenon lamp irradiation, the fluorescence (FL) intensity of the CDs exhibited an increase first and then a decrease, with a gradual shift of the maximum emission wavelength to longer wavelength. Further investigation indicated that the irradiation induced the change of the CD surface functional groups and gave rise to aggregation, resulting in the formation of larger particles. This study provided important reference value towards research on CDs properties.
研究领域:
材料科学
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光学
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化学
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DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
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2025
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IF 3.6
Lixin Peng,Zhoulin Ding,Zhiguo Zhang
The real temperature-dependent variation in the absorption of the charge transfer band (CTB) is obscured due to its presence in the photoluminescence excitation (PLE) spectrum. To address this, a method based on the steady-state rate equation was developed to extract the intrinsic absorption of the CTB. The temperature-dependent absorption spectra of CTB in VO 4 3− groups were obtained by analyzing temperature-dependent photoluminescence (PL) spectra, PLE spectra, time-resolved spectra of YVO 4 , and the spectrum of a xenon (Xe) lamp. The results reveal that, in contrast to the changes in the PLE spectra of YVO 4 , the absorption of CTB increases with temperature in the absorption spectra, and the total absorption change of CTB with temperature in YVO 4 follows the Boltzmann distribution law. This work offers a new optical framework for CTB absorption analysis, potentially supporting the design of temperature-sensitive optical materials and devices.
研究领域:
光学材料
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固体物理
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光谱学
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热分析
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Huiqi Zhang,Quansheng Cheng,Josh Haipeng Lei,Tianwei Hao,Chu-Xia Deng,Zikang Tang,Songnan Qu
Biocompatible metal-free carbon dots (CDs) with good photo-induced strong oxidation capacity in aqueous solutions are scarce for high-performance photocatalytic antibacterial and tumor therapy. In this work, we achieved effective visible light-induced cell death and antibacterial performance based on biocompatible metal-free CDs. The visible-light-induced reducing ability of the surface electron-withdrawing structure of the CDs allowed for the remaining photo-induced holes with high oxidation capacity to oxidize water molecules and generate hydroxyl radicals. Antibiotic-resistant bacteria were effectively inhibited by the CDs under xenon lamp irradiation with 450 nm long pass filter. Moreover, CD-based tumor photocatalytic therapy in mice was achieved using a xenon lamp with 450 nm long pass filter (0.3 W cm −2 ).
研究领域:
纳米技术
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光催化
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生物医学工程
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2024
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IF 3.8
Zirou Wang,Sitian Gu,Yu Ma,Huixiao Duo,Wei Wu,Qingli Yang,Xiudan Hou
An efficient PCN-224/graphene aerogel modified silica (PCN-224/GA@Sil)-based extraction method was established for monitoring the degradation process of two organophosphorus pesticides (OPPs) in juice. PCN-224/GA@Sil exhibited higher surface area (307.35 m 2 g -1 ) than graphene oxide modified silica (254.09 m 2 g -1 ). The introduction of PCN-224 endowed the sorbent with excellent adsorption specificity towards OPPs due to the ZrˑˑˑS/O coordination bond. PCN-224 exhibited relatively higher theoretical adsorption energies of PCN-224 towards fenitrothion and fenthion were 0.68 eV and -0.31 eV. The established PCN-224/GA@Sil-HPLC method showed the linearity of 0.2–500 μg L -1 for analytes. The matrix effects in juice were 9.68 % and 3.61 % for fenitrothion and fenthion. Finally, it was used for the sample pretreatment of juice preventing interference from food matrices to monitor the degradation of two OPPs. A combination method of ultrasound and xenon lamp was adopted to degrade fenitrothion and fenthion displaying the synergistic effect ( SE =2.12, 1.39).
研究领域:
分析化学
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环境科学
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食品科学
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材料科学
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DOI
PubMed
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
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Chunru Sun,Min Xiao,Jianghao Tian,Huixian Zhang
A polysulfone/metal–organic framework (MOF) based photocatalytic nanofiltration membrane is proposed in this study. Interfacial polymerization (IP) is the universal method of preparing nanofiltration (NF) membranes. In this work, the (TFN) membranes were synthesized with an in-situ interfacial synthetic method to incorporate BiOCl/MIL-101(Fe)@PDA(BMP) into the polyamide (PA) selective layer. Five distinct BMP loadings (0, 0.05, 0.1, 0.15, and 0.2 wt%) were established to examine the impact of additional BMP on the physicochemical characteristics of the produced TFN membranes. Under the irradiation of a xenon lamp with a power of 300 W, the water flux of M3 at a pressure of 0.6 MPa was 277.14 L m -2 h -1 . Furthermore, the BSA-based antifouling tests demonstrated the membrane’s outstanding antifouling capabilities, with a flux recovery rate reaching 94.08 %. The optimal membrane maintained a high and stable retention of tetracycline for 12 h. The interfacial synthesis of MOF/PA offers a new approach to the fabrication of photocatalytic NF membranes.
研究领域:
材料科学
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环境工程
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化学工程
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纳米技术
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
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2024
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IF 7.7
Kang Li,Yue Gao,Zhongxin Dong,Huibo Zhang,Xudong Fan,Lei Xu,Jie Huang,Feng Teng,Haibo Fan,Jiaming Song,Chunmei Zhang,Xuexia He,Peng Hu
Photocatalytic degradation is an effective technology for degrading water pollution that plays a significant role in environmental remediation. Ternary 2D ternary V-VI-VIIA semiconductors are ideal candidates for photocatalytic degradation of pollutants due to effective light absorption and high charge carrier mobility. In this work, high-quality SbSeI crystals were prepared using the chemical vapor transport (CVT) method and their photocatalytic degradation performance for multiple pollutants was studied. SbSeI exhibits excellent photocatalytic performance in the degradation of potassium dichromate (Cr (VI)), rhodamine B (RhB), tetracycline hydrochloride (TC-HCl) and methyl orange (MO). More than 98% of Cr (VI) and RhB can be removed after irradiation with an Xe lamp for 10 min and 40 min, respectively. The capture experiments and electron spin resonance results indicated that · O 2 − plays a major role in reducing Cr (VI), while h + plays a primary role in the degradation of MO, RhB and TC-HCl. Interestingly, the degradation rate of Cr (VI) is 1.3 times higher than that of a single pollutant system, and the degradation rate of RhB is 1.6 times higher, due to the enhanced separation and utilization of holes and electrons. The results demonstrate that SbSeI is a potential photocatalytic degradation material.
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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产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2024
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IF 6.9
Zheng Liu,Daolong Zhang,Rongmei Mou
Photocatalytic degradation is an effective strategy for the removal of environmental pollutants. However, the development of low-cost and high-efficiency photocatalysts continues to present a significant challenge. This work reported the fabrication of a composite photocatalyst directly from waste biomass (rice hulls) in a single step, which efficiently degraded oxytetracycline (OTCs) under sunlight. The morphology, microstructures and photoelectric features of the fabricated materials were subjected to comprehensive investigation using characterization techniques. The results found that the improved photocatalytic activity in sunlight was attributed to the complexation of rice hull-derived biochar and nano-ZnO generated in the preparation, which exhibited favourable adsorption, conductivity characteristics and small bandgap. The photocatalytic efficiency was observed to reach 72.6 % in 120 min under the irradiation of a 100 W xenon lamp. The effect of natural waters, degradation kinetics and degradation TOC analysis were also examined. The dominant agent responsible for the degradation of OTCs was the •O 2 − radical. Furthermore, the principal photocatalytic degradation pathway of OTCs was identified with the assistance of UHPLC/MS.
研究领域:
环境科学
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材料科学
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化学工程
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水处理
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2025
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IF 3.5
Zhou-Cao Ye,Jie Liu,Jie Duan,Wei-Li Zhai,Xian Wang,Qing Li,Wei Zhu
Photocatalytic elimination of highly toxic Cr 2 O 7 2− and stubborn reactive dyes requires photocatalysts to exhibit both robust oxidation and reduction capabilities. However, most single MOFs must utilize ultraviolet light and are incapable of concurrently providing sufficiently negative LUCO and positive HUCO potentials. In the current contribution, a water-stable In-MOF featured by typical n-type semiconductor was assembled and subsequently integrated with the in-situ growth In 2 S 3 to construct a novel In 2 S 3 /In-MOF binary heterojunction. Notably, the intrinsic LUCO (−0.43 eV, vs. NHE) and HOCO (2.77 eV, vs. NHE) energy levels of deployed In-MOF exhibit a suitable band dislocation with In 2 S 3 's CB (−0.85 eV, vs. NHE) and VB (1.43 eV, vs. NHE) potentials. And this integration facilitates the establishment of an S-Scheme carrier transfer mechanism, effectively inhibiting carriers recombination and ensuring the efficient utilization of the robust redox abilities offered by In 2 S 3 's CB and In-MOF's HOCO. Under the driven of a low-energy xenon lamp, In 2 S 3 /In-MOF's optical-electrical properties involving photosensitiveness, photocurrent intensity and interface resistance have been notably improved. M55, with a feed mass ratio of In-MOF to In 2 S 3 at 5 : 5, achieved a 99.9 % reduction efficiency for Cr(VI) within 80 min, degradation efficiencies of 77 % and 82 % for reactive dyes RB21 and RR2 within 12 h, respectively. Its reaction kinetics have increased by 8.79, 17.82 and 14.55 times compared to the pristine In-MOF, and by 1.66, 4.60 and 17.57 times relative to pure In 2 S 3 . This contribution offers a viable avenue for designing novel MOFs-based photocatalysts, which possess robust reducing and oxidizing capabilities, to address some intractable water pollution issues.
研究领域:
环境科学
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材料化学
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光催化
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水处理
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半导体物理
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Ruige Qi,Meng Zhang,Yijiao Xue,Lihong Hu,Caiying Bo,Yonghong Zhou,Hailong Wang
Photothermal elastomers are intelligent soft materials that can rapidly and efficiently convert light energy into heat energy, and it is crucial to develop sustainable smart photothermal conversion materials using natural resources in the context of sustainable resources, carbon neutrality, and environmental protection. In this study, a high-content lignin-based polyurethane (LPU) photothermal elastomer was synthesized via a one-pot method by utilizing the unmodified membrane-filtered kraft lignin. The resulting LPU achieves high mechanical strength (25.6 MPa), toughness (51.8 MJ·m −3 ) and Young's modulus (692.0 MPa) due to the combination of abundant hydrogen bonds, crosslinked network and microphase-separated structure. Additionally, the presence of phenolic groups and conjugated structures in lignin endows LPU with a combination of desirable properties, including dual-mode photothermal conversion (both Xenon cold light and near-infrared) and excellent thermoresponsive and photoresponsive shape memory performance (a shape recovery rate of up to 99.9 %), which further broaden the potential applications of LPU in photothermalelectirc generators, light-controlled programmable shape memory, smart labels, and photothermal energy harvesters. This work provides a facial and green method for synthesizing a high-content lignin-based polyurethane that have great prospects in photothermal fields.
研究领域:
材料科学
·
高分子科学
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智能材料
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光热转换
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可持续化学
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产品关联
DOI
PubMed
高影响因子
BIOELECTROCHEMISTRY
·
2019
·
IF 4.474
Shigang Su,Yizhu Zhang,Wenjuan Hu,Xia Zhang,Dianxing Ju,Changchao Jia,Jian Liu
With the continuous development of the chemical industries, synergistic removal of carbon and nitrogen contaminants has drawn much attention. In this work, a novel strategy for the synergistic removal of methyl orange (MO) and nitrate was developed in a single reactor by combining a TiO 2 /g-C 3 N 4 nanosheet/graphene photoanode and denitrifying biofilm cathode. Under xenon light illumination, the photocatalytic MO decolorization rate exceeded 90% (the initial concentration of MO was as high as 100 mg·L −1 ) with a biocathode potential bias of −0.5 V vs Ag/AgCl; additionally, the decolourization rate apparently followed first-order kinetics with a constant of 0.11 ± 0.02 h −1 . The improved MO decolourization rate was mainly because the biocathode effectively enhanced the charge separation of the photogenerated charge at the TiO 2 /g-C 3 N 4 nanosheet/graphene photoanode interface. In the meantime, the effluent nitrate was lower than 1 mg·N·L −1 at a biocathode potential of −0.5 V vs Ag/AgCl. The results indicated that the coupled biocathode-photoanode system could serve the purpose of simultaneously degrading MO and accomplishing nitrate reduction. Considering the sustainability of sunlight and the use of a biocathode, the coupled biocathode-photoanode system is a promising alternative for the simultaneous removal of biorefractory organics and nitrate.
研究领域:
环境工程
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水处理
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光催化
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生物技术
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）