INORGANICA CHIMICA ACTA
·
2024
·
IF 2.7
Gang Liu,Sheng Xu,Wenting Li,Zhenghao Li,Lingli Liu,Shangxi Zhang,Bing Hui
In order to enhance the visible light catalytic activity of TiO 2 by broadening its photoresponse range, the TiO 2 / N -GQDs (TGs) composite catalysts with a three-dimensional hollow urchin-like structure were prepared by one-step hydrothermal method. The microstructure and photoelectric properties of the synthesized TGs composites were analyzed through a series of characterizations, and the performance in degrading organic dyes under visible light was investigated. The results demonstrated that the prepared composites effectively enhanced the visible light absorption spectrum of TiO 2 by forming heterojunction. The degradation efficiency of organic dyes could reach 95.71% under visible light irradiation for 1 h, which further increased to 99.39% after 2 h. Additionally, the photocatalytic degradation process could be effectively accelerated under acid conditions. After 5 cycles of testing, the degradation efficiency of TGs composites on organic dyes was hardly reduced, indicating that they had great visible light catalytic activity and significant reusability.
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高影响因子
ENVIRONMENTAL POLLUTION
·
2024
·
IF 7.6
Ling Wang,Binquan Wang,Xiaoyan Zhang,Ziyi Yang,Xing Zhang,Hongyang Gong,Yuanyuan Song,Ke Zhang,Mingkuan Sun
Tris (1,3-dichloro-2-propyl) phosphate (TDCPP), a halogen-containing phosphorus flame retardant, is widely used and has been shown to possess health risks to humans. The sustained release of artificial nanomaterials into the environment increases the toxicological risks of their coexisting pollutants. Nanomaterials may seriously change the environmental behavior and fate of pollutants. In this study, we investigated this combined toxicity and the potential mechanisms of toxicity of TDCPP and titanium dioxide nanoparticles (TiO 2 NPs) aggregates on human neuroblastoma SH-SY5Y cells. TDCPP and TiO 2 NPs aggregates were exposed in various concentration combinations, revealing that TDCPP (25 μg/mL) reduced cell viability, while synergistic exposure to TiO2 NPs aggregates exacerbated cytotoxicity. This combined exposure also disrupted mitochondrial function, leading to dysregulation in the expression of mitochondrial fission proteins (DRP1 and FIS1) and fusion proteins (OPA1 and MFN1). Consequently, excessive mitochondrial fission occurred, facilitating the translocation of cytochrome C from mitochondria to activate apoptotic signaling pathways. Furthermore, exposure of the combination of TDCPP and TiO 2 NPs aggregates activated upstream mitochondrial autophagy but disrupted downstream Parkin recruitment to damaged mitochondria, preventing autophagosome-lysosome fusion and thereby disrupting mitochondrial autophagy. Altogether, our findings suggest that TDCPP and TiO 2 NPs aggregates may stimulate apoptosis in neuronal SH-SY5Y cells by inducing mitochondrial hyperfission and inhibiting mitochondrial autophagy.
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Xukang Han,Yuanhang Zhang,Jinhu Hu,Jiao Liu,Mingliang Ma,Yuhao Feng,Xiyao Wang,Guoxu Sun,Wei Gao,Yonglei Chi,Zihan Guo
With the advancement of wireless communication and electronic equipment , microwave absorption materials (MAMs) have more and more broad applications in related fields. Ti 3 C 2 T x -MXene with unique two-dimensional structure and excellent dielectric properties is often used as a precursor of nano-TiO 2 , which is a potential MAMs. Carbon nanofibers , as a one-dimensional material, have great electrical conductivity and can form interconnected three-dimensional conductive networks. In this study, Ti 3 C 2 T x -MXene was prepared by in-situ HF etching method, and further combined with the benefits of Co, Ce metals, and carbon nanofibers. Co/CeO 2 /TiO 2 /CNFs were prepared via a facile technique for electromagnetic microwave (EM) absorption, exhibiting excellent EM absorption performance due to the synergistic effects of dielectric and magnetic properties . The minimum reflection loss (RL min ) and effective absorption bandwidth (EAB) reache −63.35 dB (11.2 GHz) and 3.6 GHz (9.5–13.1 GHz), with a thickness of only 2.35 mm and a filling rate of 30 wt%, while the maximum EAB reaches 5.4 GHz (12.4–17.8 GHz) with a thickness of 1.82 mm, covering nearly the entire Ku band. By offering a novel strategy to the creation of brand-new, high-performance MAMs based on 1D carbon nanofibers with dielectric/magnetic synergy, this work is believed to support the development of upcoming MAMs.
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高影响因子
ACS Omega
·
2025
·
IF 4.3
Chaofan Deng,Chun Cai
Pd–Cu bimetallic catalysts were successfully synthesized for the dehydrogenation of Bisphenol Z (BPZ) by an impregnation-reduction method. The obtained catalyst was studied by XRD, HRTEM, XPS, BET, and NH3-TPD techniques and effectively applied in the highly selective cleavage dehydrogenation of BPZ to give PPP > 99% yield at 270 °C and atmospheric pressure in the solvent-free condition. It was demonstrated that the “synergistic effect” of the bimetallic catalysts could effectively promote the cleavage dehydrogenation reaction. Pd species served as the primary active sites for the adsorption and dissociation of H* and the activation of C–H bonds, while the introduced Cu species accelerated the breaking process of the C–H bond. This catalyst demonstrated remarkable stability and could be reused over ten cycles without obvious decrease both in yield and selectivity. The likely reaction pathway was outlined to elucidate the cleavage dehydrogenation mechanism according to experimental results.
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PubMed
高影响因子
Coatings
·
2025
·Vol. 15
·期 8
·965
·
IF 2.8
Wei Zhang,Xuran Zhu,Baoan Li,Boyang Hu,Leyu Shen,Yanzong Meng,Haifeng Gao
Commercial hydrophobic membranes encounter severe problems such as membrane wetting and membrane fouling under extreme conditions, which affect membrane separation performance. To enhance the anti-fouling abilities of hydrophobic membranes, a composite membrane with omniphobic characteristics was fabricated successfully in this paper. Titanium dioxide (TiO2) nanoparticles were in-situ grown via the hydrothermal synthesis method, and then fluorosilane with low surface energy was grafted on polyvinylidene fluoride (PVDF) membranes. Subsequently, the morphologies, chemical compositions, wetting properties and structural parameters of composite membranes were characterized systematically. Various contaminants were added to the feed to investigate the anti-fouling and anti-wetting performances of the composite membrane in membrane distillation tests. The results showed that butyl titanate was first hydrolyzed to form titanium hydroxide (Ti(OH)4) and then it was dehydrated to form TiO2in the hydrothermal environment. TiO2crystals continued to grow and formed rough morphology with micro-nano synergistic distribution, which is similar to a “sunflower” disk composed of cubic clusters and nanopillars. Meanwhile, fluorosilane successfully was grafted onto TiO2. The contact angles of deionized water, 0.4 mM sodium dodecyl sulfate (SDS) solution and 0.2%v/vmineral oil emulsion on the composite membrane surface were 167.3°, 162.0° and 158.5°, respectively, endowing the composite membrane with excellent omniphobic features. In direct contact membrane distillation (DCMD) tests, the composite membrane exhibited a relatively stable membrane permeate flux, and the salt rejection rate almost reached 100%. The mixture, consisting of inorganic salts, organic substances, surfactants and oil emulsions, was used as feed. In contrast, the commercial PVDF membrane flux decreased drastically and even dropped to 0 due to the membrane fouling and wetting. As for the pristine PVDF membrane, the membrane surface was covered with pollutants and membrane pores were blocked. Therefore, it was proved that the omniphobic composite membrane possesses outstanding anti-fouling and anti-wetting performance.
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高影响因子
Water
·
2025
·Vol. 17
·期 15
·2261
·
IF 3
Xiangyu Chen,Hao Zhong,Juanjuan Yao,Jingye Gan,Haibing Cong,Tengyi Zhu
Fibrate pharmaceuticals (fibrates), as a widespread class of emerging contaminants, pose potential risks to both ecological systems and human health. The photocatalytic system based on nitrogen (N) and fluorine (F) co-doped TiO2nanotube arrays (NF-TNAs) provides a renewable solution for fibrate pharmaceutical removal from water, powered by inexhaustible sunlight. In this study, the degradation of two typical fibrates, i.e., bezafibrate (BZF) and ciprofibrate (CPF), under simulated sunlight irradiation through NF-TNAs were investigated. The photocatalytic degradation of BZF/CPF was achieved through combined radical and non-radical oxidation processes, while the generation and reaction mechanisms of associated reactive oxygen species (ROS) were examined. Electron paramagnetic resonance detection and quenching tests confirmed the existence of h+, •OH, O2•−, and1O2, with O2•−playing the predominant role. The transformation products (TPs) of BZF/CPF were identified through high-resolution mass spectrometry analysis combined with quantum chemical calculations to elucidate the degradation pathways. The influence of co-existing ions and typical natural organic matters (NOM) on BZF/CPF degradation were also tested. Eventually, the ecological risk of BZF/CPF transformation products was assessed through quantitative structure–activity relationship (QSAR) modeling, and the results showed that the proposed photocatalytic system can largely alleviate fibrate toxicity.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Yunfei Yang,Hongfang Shen,Congcong Ma,Bo Ma,Dong Li,Haibo Li,Youjun Lu,Yanmin Wang
It remains a huge challenge to design a kind of high performance, multifunctional and low cost photocatalysts driven by visible light for the remediation of pollutants from waste water. In this work, the carbon coated Tb 2 O 3 /Er 2 O 3 /TiO 2 nanotubes (Tb 2 O 3 /Er 2 O 3 /TiO 2 @C) 0D/1D hybrid photocatalysts were synthesized by a microwave hydrothermal method. Essentially, the Er 2 O 3 nanoparticles can absorb low-energy photons at 800–980 nm and emit high-energy photons to TiO 2 through the up-conversion effect, meanwhile, the Tb 2 O 3 act as a redox center to promote the separation of photoinduction charges since the instantaneous photoelectric density was increased by 10 times by compared to TiO 2 @C. As a result, the photodegradation efficiency of the optimized Tb 2 O 3 /Er 2 O 3 /TiO 2 @C photocatalysts is about 15.7 times higher than that of TiO 2 @C under visible light irradiation for decomposing rhodamine B, respectively. Moreover, the photodegradation efficiency remained above 70 % after reused for 5 times. Thus, the enhanced synergistic effect between Er 2 O 3 and Tb 2 O 3 promises the excellent photodegradation activity and reduce cost. It remains a huge challenge to design a kind of high performance, multifunctional and low cost photocatalysts driven by visible light for the remediation of pollutants from waste water. The carbon coated Tb 2 O 3 /Er 2 O 3 /TiO 2 nanotubes (Tb 2 O 3 /Er 2 O 3 /TiO 2 @C) 0D/1D hybrids were synthesized by a microwave hydrothermal method. The Er 2 O 3 nanoparticles can absorb low-energy photons at 800–980 nm and emit high-energy photons to TiO 2 through the up-conversion effect, meanwhile, the Tb 2 O 3 act as a redox center to promote the separation of photoinduction charges since the instantaneous photoelectric density was increased by 10 times by compared to TiO 2 @C. As a result, the photodegradation efficiency of the optimized Tb 2 O 3 /Er 2 O 3 /TiO 2 @C photocatalysts is about 15.7 times higher than that of TiO 2 @C under visible light irradiation for decomposing rhodamine B. Moreover, the photodegradation efficiency remained above 70 % after reused for 5 times. Thus, the enhanced synergistic effect between Er 2 O 3 and Tb 2 O 3 promises the excellent photodegradation activity and reduce cost.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xiangjie Chen,Jia Zhu,Jian Shao,Taisong Pan,Guang Yao,Min Gao,Jian Yang,Rui Zhao,Libin Huang,Tao Li,Huanyu Cheng,Yuan Lin
L-cysteine plays a significant role in numerous physiological processes in the human body health, and monitoring its level has important clinical implications. However, L-cysteine tests are limited to invasive blood drawing and a time-consuming laboratory process, which also fails to give real-time and continuous results. This study introduces a flexible electrochemical sensor based on a self-assembled monolayer (SAM) of 3-mercaptopropyltrimethoxysilane (MPTS) molecular receptor and catalytic titanium oxide-modified carbon cloth (MPTS/TiO 2 /CC). The MPTS and TiO 2 modification serve as the artificial antibody through thiol interactions and the charge transfer layer, respectively, which is further confirmed by density function theory (DFT) calculations. The flexible L-cysteine sensor based on MPTS/TiO 2 /CC shows a wide linear range of up to 500 µ m and an ultra-low limit of detection of 0.046 µ m . A sweat patch consisting of an electrochemical sensing unit, a laser-fabricated microfluidic channel, and a miniaturized electrochemical workstation affords real-time monitoring of L-cysteine detection in dynamic environments and reveals the strong correlation between sweat and blood L-cysteine concentrations. The introduction of molecular receptors and band alignment may offer a general way of designing sensitive, specific electrochemical sensors for point-of-care diagnosis.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Zhong Lv,Yanfeng Yang,Lining Zhang,Pinqi Feng,Xiaolu Zhai,Cun Zhou
Oily wastewater, such as from oil spills, chemical leaks, and organic pollutants, has become a serious environmental pollution problem. Superhydrophobic cotton fabric has attracted extensive research interest as an ideal material for handling oily wastewater, but this solution is difficult to balance efficient oil-water separation and removal of organic pollutants in complex oily wastewater. Therefore, the combination of superwetting and photocatalysis is expected to provide an efficient and simple solution. Firstly, heterojunction g-C 3 N 4 /TiO 2 (CNTi) was synthesized via thermal polymerization; vinyl-terminated dimethylpolysiloxane (V-PDMS) and acrylic acid (AA) were polymerized using free radical polymerization, and then superwetting coating cotton fabric (V-PDMS/AA/CNTi/CF) was co-constructed by a facile dip coating method. The as-prepared superwetting coating strategy was considered suitable for a wide range of substrates, providing new perspectives for the practical application of constructing bifunctional materials with reversible conversion wettability and photocatalytic degradation. Through a pH-responsive reversible conversion wettability mechanism, for different types of oil/water mixtures, the separation efficiency reached more than 99 % for heavy-density oil/water mixtures and more than 96 % for light-density oil/water mixtures, with excellent recoverability and stability. In addition, it demonstrated highly selective degradation of organic pollutants such as Rhodamine B, methylene blue, methyl orange, tetracycline hydrochloride, and levofloxacin hydrochloride. The main active species for photocatalytic degradation were identified as the superoxide radical anion (·O 2 ¯) and the hydroxyl radical (·OH) through quenching experiments. This work combined highly efficient oil-water separation and photocatalytic degradation technologies to provide a new approach and solution for the design of multifunctional water purification materials.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiaoyan He,Yanling Liang,Jing Li,Yuanyuan Lu,Xin Tian,Zhiqiang Wang,Runze Cao,Penggai Ma,Shuo Ma,Xiaoquan Lu
Solar interfacial evaporation technology, as an emerging sustainable water purification strategy, provides both an economical and environmentally friendly way to solve water resource problems. However, it still faces certain limitations and challenges in treating polluted wastewater containing volatile organic compounds (VOCs). In this paper, MXene-TiO 2 -Ag composites were embedded into a polyvinyl alcohol (PVA) hydrogel system using kapok fibres as biomass templates, and a bifunctional and environmentally friendly solar evaporation system (MTAH) was successfully constructed for both efficient solar freshwater production and phenol removal (typical VOC). The MTAH evaporator demonstrated excellent evaporation performance with an evaporation rate as high as 3.09 kg m −2 h −1 and a photothermal conversion efficiency as high as 93.16 % under 1 solar light intensity. The self-growth property of TiO 2 on the MXene surface endowed the evaporator with the ability of photocatalytic degradation of pollutants. In addition, the incorporation of trace Ag nanoparticles played positive roles, which not only significantly enhanced the photothermal conversion performance of MXene, but also broadened the light response range of TiO 2 and effectively suppressed the complexation of photogenerated electron-hole pairs. The MTAH evaporator shows an excellent removal rate of 91.84 % for high VOC concentrations (100 ppm phenol), effectively avoiding secondary contamination of the condensate. The finding paved the course for the sustainable and eco-friendly solution for freshwater scarcity.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Wen-Bei Yu,Heng-Rui Zhang,Hong-Wei Zhang,Yao Liu,Yu Li,Bao-Lian Su
Carbon materials are commonly integrated with TiO 2 to achieve high carrier mobility and excellent photocatalytic performance, and the chemical bond between TiO 2 − C is considered as a significant strategy to enhance efficiency. Nevertheless, few analyses have elucidated the formation mechanism of Ti 3 + − C bonds and the underlying reasons for the performance enhancement. To address these issues, this study conducts an in-depth investigation into the electronic structure of TiO 2 − C and demonstrates that the charge in the nonbonding molecular orbital t 2 g of Ti 3 + is transferred to the unoccupied 2 p energy level of C through the formation of 1π and 2π bonds, i.e., (Ti 3 d xz - C 2 p y ) and (Ti 3 d xy - C 2 p x ). The hybridization of t 2 g -2 p orbitals endows the Ti 3 + − C bond with higher carrier mobility and a stronger binding force, thereby contributing to stable photocatalytic H 2 production. Inspired by this scenario, the NSTiO 2 /rGO hybrid architecture, featuring the {101}/{001} surface heterojunction and the Ti 3 + − C interfacial chemical bond, has been constructed. As a result, the hybrid catalyst exhibited excellent photocatalytic cycling stability of 92.9 % $92.9 \,\%$ and an H 2 evolution rate of 33.4 mmolh −1 g −1 . This work proposes a strategy for designing efficient photocatalyst by regulating orbitals to achieve high-performance photocatalytic methanol splitting.
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高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Xiangfeng Meng,Zhiping Wang,Xiaoting Lv,Lihuan Hou,Hong Jin,Wenjuan Li,Junwei An,Chen Wen
A composite anti-corrosion coating with five different graphene ratios was coated on the surface of 2A12 aluminum alloy, using graphene/TiO 2 mixed powder as the anti-corrosion filler and K 2 SiO 3 water glass as the matrix. Scanning electron microscope (SEM) and X-ray diffractometer (XRD) were used to characterize the microscopic morphology, element composition, and phase composition of coatings. The corrosion resistance of the coating was appraised using electrochemical characteristics such as AC impedance and polarization curves. The surface of the coatings with low graphene content is dense and level. The surface of coatings with graphene content exceeding 0.5 g (2.5 wt.%) exhibit large-sized pits and cracks, and large corrosion products are produced after immersion in 3.5 wt.% NaCl solution. All five coatings maintained a stable phase structure before and after corrosion. Electrochemical analysis shows that the increase in graphene content leads to a first strong and then weak physical barrier effect of the coating against corrosive media. The coating with 0.25 g(1.25 wt.%) graphene exhibits the best corrosion resistance, with its |Z| 0.01H z value maintaining around 10 5 Ω·cm². When the graphene content exceeds this value, the inhibition of the coating on corroding media will be weakened by reason of particle aggregation.
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高影响因子
危险品化学品经营许可证（带存储）