Journal of Water Process Engineering
·
2026
·
IF 6.6
Jingrong Li,Song Sun,Xuehui Zhu,Xue Zhang,Hao Shi,Yuanhong Xu
An ORR/EO-Cl system using commercial electrodes achieves efficient disinfection at 5 mA/cm 2 . • Cathodic H 2 O 2 consumes anodic free chlorine to generate 1 O 2 as the dominant bactericide. • The system suppresses chlorate and chlorite formation in real medical wastewater. • Multi-level oxidative damage to membranes, DNA, proteins and lipids causes irreversible inactivation. Electrochemical disinfection of chloride-rich medical wastewater faces an inherent trade-off: killing pathogens efficiently while avoiding toxic chlorate and chlorite formation. Here we show that coupling oxygen reduction at a commercial carbon felt cathode with chlorine evolution at a DSA@Ru/Ir anode breaks this trade-off. At 5 mA/cm 2 , cathodic H 2 O 2 rapidly consumes anodic free chlorine, generating singlet oxygen ( 1 O 2 ) as the dominant bactericidal species while suppressing chlorate and chlorite. In real hospital wastewater, chlorate drops from 0.66 to 0.39 mg/L, and the system inactivates 10 7 CFU/mL Escherichia coli in 5 min and Staphylococcus aureus in 10 min-using, the energy consumption was 0.1169 kWh/m 3 and 0.2338 kWh /m 3 , respectively. Quenching, flow cytometry, DNA electrophoresis, protein carbonylation and lipid peroxidation collectively confirm that 1 O 2 -driven oxidative stress causes irreversible membrane, DNA, protein and lipid damage. This work offers a low-energy, commercially viable strategy for electrochemical disinfection of real medical wastewater with intrinsic byproduct suppression. Download: Download high-res image (85KB) Download: Download full-size image
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高影响因子
LANGMUIR
·
2025
·
IF 3.9
Meiting Li,Bingxin Yuan,Chi Zhang,Jia Li,Xuejiao Wang
Hierarchical BiOCl/BiOI and BiO(Cl,I) photocatalysts were obtained via a solution-phase reaction for visible-light-driven elimination of aqueous pollutants, where the phase/morphology evolution, relationship between energy band/microstructure structure and photocatalytic properties, and photoreaction mechanism can be deciphered in detail. It was well-documented that the R = 8:1 BiOCl/BiOI heterojunctions with a coherent interface of Bi and O atoms showed a relatively strong redox capacity owing to their rapid Z-scheme charge transfer and large interfacial contact and eventually degraded ∼92.52% and 96.57% of rhodamine B (RhB) and tetracycline (TC) molecules under 10 min of visible light irradiation, which was larger than those of bare BiOCl and BiOI. However, their poor photocatalytic stability was proved to be unfavorable to practical applications. The best BiOCl0.88I0.12 solid solutions separately elucidated the optimal RhB and TC removal efficiency of ∼99.97% and 97.54% after 10 and 6 min of illumination, and it still maintained a high photodegradation efficiency toward RhB after five consecutive runs. The exceptional photocatalytic performance is cogoverned by the characteristics of in situ generated oxygen vacancies and defect energy levels.
研究领域:
材料科学
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环境科学
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PubMed
高影响因子
CRYSTAL GROWTH & DESIGN
·
2019
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IF 4.153
Jian Tang,Xianghe Meng,Fei Liang,Kaijin Kang,Tixian Zeng,Mingjun Xia,Wenlong Yin,Zheshuai Lin,Bin Kang
Four novel cyanates BaCNOX (X = Cl, Br, I, and CNO) containing linear π-conjugated anions were obtained by solid-state metathesis reactions for the first time. BaCNOCl crystallizes in a monoclinic space group P21/m with a = 5.5757(15) Å, b = 4.4925(10) Å, c = 7.850(2) Å, β = 102.38(3)°, Z = 2, whereas the remaining three compounds belong to the same orthorhombic space group Pnma with a = 8.227–8.713 Å, b = 4.290–4.552 Å, c = 10.986–11.803 Å, Z = 4. The crystal structures of these four compounds are divergent, exhibiting rich structural diversity ranging from simple to complex when X changes from Cl to Br and I, and then to CNO. Their thermal, vibrational, and optical properties were characterized in detail. Besides, the first-principles calculations reveal that all four compounds show giant optical anisotropy of Δn > 0.20 at 800 nm owing to the superior arrangement of linear (CNO)− π-conjugated groups. Successful synthesis of these cyanates not only further explains the influence of microscopic ions on the structures, but also enriches the structure chemistry of cyanates and provides enlightenment for the study of birefringence in CNO-based compounds.
研究领域:
材料科学
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晶体学
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光学物理
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理论化学
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高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2021
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IF 3.178
Qi-Chao Yang,Dong-Fang Qiu,Yuan-Lin Dang,Zhan-Ping Qiao,Zhi-wei Xu
Two equilibrium diagrams of the ternary system (CsX + MnX 2 + H 2 O, X = Cl, Br) at 298.15 K are reported in this paper. Each system has two double salts (CsMnX 3 ·2H 2 O and Cs 2 MnX 4 ·2H 2 O X = Cl, Br) in it and the elements of all double salts in phase diagrams are confirmed by Schreinemaker method. Equilibrium phase diagrams show that the chloride double salts are congruently soluble compounds in water, however that the bromide double salts are incongruently soluble compounds in water. All the double salts are characterized by titrimetric analysis, powder X-ray diffraction, thermogravimetric and differential thermalanalysis. The enthalpies of formation of these double salts are first calculated by measuring their enthalpies of dissolution.
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CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Xiaojie Qiu,Shengjiong Yang,Mawuli Dzakpasu,Xiaoping Li,Dahu Ding,Pengkang Jin,Rongzhi Chen,Qionghua Zhang,Xiaochang C. Wang
Mn 0.8 Fe 2.2 O 4 magnetic nanocrystals (Mn 0.8 Fe 2.2 O 4 MNCs) are synthesized by thermal treatment of a metal-organic framework (MOF) template, and their physicochemical properties are characterized in detail. The Mn 0.8 Fe 2.2 O 4 MNCs exhibited highly efficient performance for the catalytic degradation of Bisphenol A (BPA) by peroxymonosulfate (PMS) activation at various initial pH, catalyst dosage, and PMS concentration. A leaching solution experiment evidenced that PMS activation by the Mn 0.8 Fe 2.2 O 4 MNCs is a heterogeneous process. Interestingly, scavenging experiments and electron paramagnetic resonance (EPR) analysis demonstrated that HO is the dominant radical for BPA degradation, rather than SO 4 − . The scavenger experiment indicated that the surface-bound radicals may play the crucial role for BPA degradation. Increasing Cl − or decreasing bicarbonate concentrations in solution enhanced the catalytic degradation process significantly through non-radical pathways. The Mn 0.8 Fe 2.2 O 4 MNCs exhibited desirable stability and reusability, that the spent Mn 0.8 Fe 2.2 O 4 MNCs could be significantly regenerated by thermal treatment at 450 °C in open air. Findings from this study would expand the applications of MOFs and also provide new insights into the enhancement of degradation efficiency during PMS activation processes.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Shuailong Shen,Ziyi Guo,Wanmei Zhong,Jilin Zhang,Wenli Zhou,Liping Yu,Shixun Lian
All inorganic CsPbX 3 (X = Cl, Br, I) perovskite quantum dots (QDs) have excellent optical properties, and show great potential in optoelectronic devices, information storage, wide color gamut backlight display and other fields. In previous work, embedding CsPbBr 3 QDs into glass matrix through in-situ crystallization has become an important strategy to improve the stability of quantum dots. However, few reports have been made on the synthesis of high-quality whole family CsPbX 3 QDs glass by melt-quenching method. Herein, CsPbX 3 QDs glasses with full visible spectrum were synthesized by a closed melt-quenching technique. And the precise content of GeO 2 was used to regulate the size of glass network gaps to accommodate different sizes of CsPbX 3 QDs. The deconvoluted infrared spectra confirmed that the introduction of GeO 2 was beneficial to the increase of non-bridging oxygen in the rigid structure, the number and percentage of [BO 3 ] triangular units increased correspondingly, and the glass network changed in a three-dimensional and looser benign way, which was beneficial to the growth of large-size QDs. Finally, the luminescent properties of CsPbCl 2 Br, CsPbBr 3 and CsPbBrI 2 QDs glasses were improved respectively. The optimized CsPbX 3 QDs glasses have tunable luminescence in the full visible spectrum (414–692 nm), improved photoluminescence quantum yield (PLQY, ∼53.06 %) and longer decay lifetime, and excellent stability. Finally, the construction of a white light-emitting diode (WLED) device shows that CsPbX 3 QDs glass has potential applications in solid-state lighting.
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高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
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IF 14.7
Wei Shengjie,Ma Wenjie,Sun Minmin,Xiang Pan,Tian Ziqi,Mao Lanqun,Gao Lizeng,Li Yadong
Constructing atom-pair engineering and improving the activity of metal single-atom nanozyme (SAzyme) is significant but challenging. Herein, we design the atom-pair engineering of Zn-SA/CNCl SAzyme by simultaneously constructing Zn-N 4 sites as catalytic sites and Zn-N 4 Cl 1 sites as catalytic regulator. The Zn-N 4 Cl 1 catalytic regulators effectively boost the peroxidase-like activities of Zn-N 4 catalytic sites, resulting in a 346-fold, 1496-fold, and 133-fold increase in the maximal reaction velocity, the catalytic constant and the catalytic efficiency, compared to Zn-SA/CN SAzyme without the Zn-N 4 Cl 1 catalytic regulator. The Zn-SA/CNCl SAzyme with excellent peroxidase-like activity effectively inhibits tumor cell growth in vitro and in vivo. The density functional theory (DFT) calculations reveal that the Zn-N 4 Cl 1 catalytic regulators facilitate the adsorption of * H 2 O 2 and re-exposure of Zn-N 4 catalytic sites, and thus improve the reaction rate. This work provides a rational and effective strategy for improving the peroxidase-like activity of metal SAzyme by atom-pair engineering.
研究领域:
材料科学
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催化
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纳米技术
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生物化学
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理论化学
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Guoshuai Liu,Shanshan He,Hua Zou,Shijie You
Electrocatalytic hydrodechlorination (EHDC) is a promising approach for decomposing chlorinated organic compounds in water treatment. However, the efficiency of EHDC is constrained by kinetic mismatch between C−Cl bond cleavage and atomic hydrogen (H*) utilization. Herein, we develop a heterostructured Pd-H x WO 3 electrocatalyst with Pd nanoparticles (Pd NPs) anchored on H x WO 3 substrate, which can efficiently decompose 2,4-dichlorophenol (2,4-DCP) by taking advantage of the hydrogen spillover effect. Specifically, the resulting Pd-H x WO 3 electrocatalyst exhibits superior dechlorination rate constant ( k = 1.142 h −1 ) and Faradic efficiency (FE = 10.1 %) than monometallic Pd ( k = 0.3600 h −1 , FE = 3.74 %) and bare H x WO 3 ( k = 0.1167 h −1 , FE = 2.11 %), along with exceptional pH adaptability and stability. Electron spin resonance (ESR) and electrochemical and kinetic isotope effect (KIE) measurements indicate that the transport of the H* from H x WO 3 to Pd NPs is the key to enhanced EHDC performance. Theoretical studies reveal that the Volmer step of water dissociation to produce H* is more favorable due to lower transition state (TS) energy (0.344 eV) on H x WO 3 than that on Pd (TS = 0.532 eV). Furthermore, the interfacial electron redistribution in Pd-H x WO 3 lowers the thermodynamic (Δ G = 0.207 eV) and kinetic (Δ G = 0.239 eV) barriers for H* transfer from the internal site of H x WO 3 to interfacial Pd sites, thereby facilitating the proton-coupled electron transfer (PCET)-mediated EHDC on Pd site. This work provides a new proof-in-concept demonstration for designing hydrogen spillover-integrated electrocatalysts to enhance H* generation-transfer-utilization in EHDC for water decontamination.
研究领域:
环境化学
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电催化
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水净化
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材料科学
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可持续化学
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DOI
高影响因子
Advanced Science
·
2023
·Vol. 10
·期 13
·2207630
·
IF 15.1
Wen-Fa Chen,Bin-Wen Liu,Shao-Min Pei,Xiao-Ming Jiang,Guo-Cong Guo
In contrast to anionic group theory of nonlinear optical (NLO) materials that second-harmonic generation (SHG) responses mainly originate from anionic groups, structural regulation on the cationic groups of salt-inclusion chalcogenides (SICs) is performed to make them also contribute to the NLO effects. Herein, the stereochemically active lone–electron-pair Pb 2+ cation is first introduced to the cationic groups of NLO SICs, and the resultant [K 2 PbX][Ga 7 S 12 ] (X = Cl, Br, I) are isolated via solid-state method. The features of their three-dimensional structures comprise highly oriented [Ga 7 S 12 ] 3− and [K 2 PbX] 3+ frameworks derived from AgGaS 2 , which display the largest phase-matching SHG intensities (2.5−2.7 × AgGaS 2 @1800 nm) among all SICs. Concurrently, three compounds manifest band gap values of 2.54, 2.49, and 2.41 eV (exceeding the criterion of 2.33 eV), which can avoid two-photon absorption under the fundamental laser of 1064 nm, along with the relatively low anisotropy of thermal expansion coefficients, leading to improved laser-induced damage thresholds (LIDTs) values of 2.3, 3.8, and 4.0 times that of AgGaS 2 . In addition, the density of states and SHG coefficient calculations demonstrate that the Pb 2+ cations narrow the band gaps and benefit SHG responses.
研究领域:
材料科学
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光学
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Geying Liu,Chaoyue Xie,Yan Zhang,Ye Du,Jie Wang,Jia Lin,Jing Bai,Jinhua Li,Changhui Zhou,Tingsheng Zhou,Baoxue Zhou
Urea electrolysis is an appealing topic for hydrogen production due to its ability to extract hydrogen at a lower potential. However, it is plagued by sluggish kinetics and noble-metal catalyst requirements. Herein, we developed nickel-iron-layered double hydroxide (NiFe-LDH) nanolayers with abundant oxygen vacancies (O V ) via synergistically etching nickel foam with Fe 3+ and Cl - ions, enabling the efficient conversion of urea into H 2 and N 2 . The synthesized O V -NiFe-LDH exhibits a lower potential (1.30 vs. reversible hydrogen electrode, RHE) for achieving 10 mA cm −2 in the urea oxidation reaction (UOR), surpassing most recently reported Ni-based electrodes. O V provides favorable conductivity and a large surface area , which results in a 4.1-fold in electron transport and a 5.1-fold increase in catalyst reactive sites. Density Functional Theory (DFT) calculations indicate that O V can lower the adsorption energy of urea, and enhance the bonding strength of *CONHNH, giving rise to improved UOR. This study provides a viable path toward economical and efficient production of high-purity hydrogen.
研究领域:
材料科学
·
能源化学
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PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Lan Shi,Tianrui Gao,Zhipeng Zhu,Fan Yang,Bing Han,Jia Lv,Lin Tao,Yang Gao,Rong Hua,Huan Wu,Yichao Huang,Xiaojin He
Our recent large-scale population study demonstrated that several per- and polyfluoroalkyl substances (PFAS) are potential risk factors for sperm quality—with perfluorohexane sulfonate (PFHxS) and 6:2 chlorinated polyfluorinated ether sulfonate (6:2 Cl-PFESA) emerging as the strongest effect contributors to asthenospermia, yet their causal relationships remain unclear. Here, we provide in vivo experimental evidence and evaluation of the combined effects of 6:2 Cl-PFESA and PFHxS under human-relevant exposure. Male ICR mice were orally exposed to each compound alone or in combination for 35 days, covering one full spermatogenic cycle. Both single and combined exposures were associated with alterations of the male reproductive axis, including reduced serum testosterone and elevations in the gonadotropins luteinising hormone (LH) and follicle-stimulating hormone (FSH), and in sex hormone-binding globulin (SHBG). Testicular injury included disturbed seminiferous architecture, decreased sperm motility, and increased germ-cell apoptosis. Transcriptomics highlighted pathways related to cell adhesion, junctional integrity, and apoptosis, and Western blotting and TUNEL confirmed blood-testis barrier (BTB) protein disruption and increased germ-cell apoptosis. Toxic potency differed by endpoint, with endpoint-specific patterns across endocrine, BTB, and motility outcomes. Combined-effect analysis identified a positive non-additive interaction for LH, whereas most BTB-associated proteins showed no statistically significant interaction despite endpoint-specific deviations from the concentration-addition expectation. Collectively, these findings indicate that human-relevant co-exposure to 6:2 Cl-PFESA and PFHxS is associated with asthenospermia-related sperm and testicular alterations. The converging phenotypic, molecular, and functional findings support BTB impairment and germ-cell apoptosis as plausible contributing processes, yet the precise mechanisms still need further investigation.
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PubMed
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2020
·Vol. 646
·期 5
·288-295
·
IF 1.24
Yalan Li,Yuandong Wu,Dajiang Mei,Thomas Doert
Three new tin coordination compounds (4,4'-Hbipy) 2 [Sn 2 (C 2 O 4 ) 3 ] ( 1 ), (4,4'-H 2 bipy)[Sn(C 2 O 4 ) 2 ] ( 2 ), and SnCl 2 (4,4'-bipy) ( 3 ) were synthesized under hydro-(solvo-)thermal conditions and their crystal structures were determined by single-crystal X-ray diffraction. Compound 1 exhibits a ionic structure based on discrete [4,4'-Hbipy] + cations and [Sn 2 (C 2 O 4 ) 3 ] 2– anions. These two units are linked via N–H ··· O hydrogen bonds to form a pseudo-one-dimensional zigzag hydrogen-bonded chain. In compound 2 , four-coordinate Sn atoms form monomeric tin dioxalato complexes, which are connected to the doubly protonated [4,4'-H 2 bipy] 2+ cations through N–H ··· O hydrogen bonded to give a one-dimensional zigzag hydrogen-bonded chain. Compound 3 forms a three-dimensional hydrogen-bonded network, in which 1 ∞ [SnCl 2 (4,4'-bipy)] linear chains are interconnected to each other by C–H ··· Cl hydrogen bonding. The solid-state UV/Vis/NIR diffuse reflectance spectroscopy shows that three compounds are broadband semiconductors. The thermogravimetric analysis evidences the thermal stability of the three compounds up to 175, 201, and 246 °C, respectively.
研究领域:
无机化学
·
材料科学
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高影响因子
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