WATER RESEARCH
·
2023
·
IF 12.8
Yun-Jie Wang,Chen-Xuan Li,Yan Meng,Zhi-Yan Guo,Shuo Cui,Xian-Zhong Fu,Hou-Qi Liu,Wen-Qi Xia,Wen-Wei Li
Low-pressure catalytic membranes allow efficient rejection of particulates and simultaneously removing organics pollutant in water, but the accumulation of dissolved organic matters (DOM) on membrane surface, which cover the catalytic sites and cause membrane fouling, challenges their stable operation in practical wastewater treatment. Here we propose a ferric salt-based coagulation/co-catalytic membrane integrated system that can effectively mitigate the detrimental effects of DOM. Ferric salt (Fe 3+ ) was in the wastewater, serving both as DOM coagulant to lower the membrane fouling and as a co-catalyst with the membrane-embedded MoS 2 nanosheets for perxymonosulfate (PMS) activation and pollutant degradation. The membrane functionalized with 2H-phased MoS 2 nanosheets showed improved hydrophilicity and fouling resistance relative to the blank polysulfone membrane. Attributed to the DOM coagulation and co-catalytic generation of surface-bound radicals for decontamination at membrane surface, the catalytic membrane/PMS/ Fe 3+ system showed much less membrane fouling and 2.6 times higher pollutant degradation rate in wastewater treatment than the catalytic membrane alone. Our work imply a great potential of coagulation/co-catalytic membrane integrated system for water purification application.
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Journal of Materials Chemistry C
·
2023
·Vol. 12
·期 6
·2053-2062
·
IF 6.4
Zixuan Huang,Jinju Zheng,Hui Fu,Jialiang Jiang,Zilong Li,Chunhong Gu,Zhentao Du,Yang Yang,Weiyou Yang,Jialong Zhao
Non-toxic lead-free vacancy-ordered double perovskites (DPs) are attracting more and more wide interest, thanks to their environment- and eco-friendly nature with exciting applications in modern optoelectronic devices. However, most intrinsic vacancy-ordered DPs exhibit a simple luminescence mode with poor photoluminescence (PL) quantum yield (QY). Herein, we report the exploration of ns2-type ion (Bi3+ and Sb3+) co-doped vacancy-ordered DP Cs2HfCl6 microcrystals (MCs) by a room-temperature precipitation method. Different to single-dopant analogues, the co-doped DPs deliver dual emission bands, which are sensitive to the excitation wavelength and tunable across the full-color region. It is verified that the emission band peaked at 460 nm should have originated from the triplet self-trapped excitons (STEs) of Bi3+ with a lifetime of hundreds of nanoseconds, while that peaked at 590 nm should be ascribed to the microsecond-timescale STEs of Sb3+, respectively. Accordingly, based on these co-doped DPs, high-performance devices such as multi-color anti-counterfeiting and single-component white light emitting diodes (WLEDs) (CIE = (0.344, 0.337), CRI = 84) have been achieved. Moreover, the as-assembled optical temperature sensor exhibits relative sensitivity (SR) and absolute sensitivity (SA) of 1.2% K−1 and 0.013 K−1, respectively, representing their bright future toward multifunctional optoelectronic applications.
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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
·
2023
·
IF 5
Hui-Zhen Yang,Yue Hu,Jia-Jia Chen,Rui-Mo Zhao,Lin Pu,Xiao-Qi Yu,Ji Zhang
Nitric oxide (NO) combined with photodynamic therapy (PDT) is a promising tumor treatment method. Herein, the cationic lipid DPNO(Zn) was developed as co-delivery carrier of NO and photosensitizer Chlorin e6 (Ce6). The target CNO lipid nanoparticles (LNPs) were obtained by solvent exchange method as a NO/PDT combination therapy platform, and biocompatible polymer γPGA could be easily coated to form PCNO for in vivo applications. Fluorescence spectra and confocal imaging experiments showed that the Ce6-loaded LNPs could release NO rapidly under low power UV irradiation with fluorescence self-reporting ability. On the other hand, under the irradiation of 660 nm laser, the LNPs could effectively produce singlet oxygen ( 1 O 2 ). In vitro and in vivo antitumor assays showed that the combination treatment of NO/PDT was more effective in tumor growth inhibition compared with individual NO or PDT treatment. Mechanism studies of NO/PDT combined therapy revealed that 1 O 2 could increase the level of p53 protein, thus activating the caspase 3 apoptosis pathway. And the rapid release of NO could amplify the effect of this pathway by reducing the level of HIF-1α. The NO and 1 O 2 released under laser irradiation could not only directly damage DNA and mitochondria, resulting in tumor cell dysfunction, but also induce the upregulation of iNOS to further enhance the gas therapy efficiency. This study proved that the light-triggered NO/ 1 O 2 generation system can be used as an effective NO/PDT synergistic therapy platform for cancer treatment.
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CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Xinyu Hu,Yongmei Wang,Liangliang Zhang,Man Xu,Wei Dong,Jianfa Zhang
Salecan is a novel water-soluble extracellular β-glucan and has excellent physicochemical and biological properties. A series of hydrogels were fabricated from Salecan and poly(2-acrylamido-2-methylpropanesulfonic acid- co - N -hydroxymethyl acrylamide) (poly(AMPS- co -HMAA), PAH) by semi-IPN technique. The introduction of Salecan into the PAH network endows the system with enhanced cell adhesion properties. These semi-IPN hydrogels with open interconnected pores had pH and salt-sensitive swelling behavior. The increase in the content of hydrophilic Salecan could enhance the water uptake of the hydrogels. Rheological results indicated that the incorporation of PAH into hydrogels increased the storage modulus. The degradation property of the hydrogels can be tuned by modulating the content of Salecan and BAAm. Cytotoxicity results revealed that the hydrogels were non-toxic to COS-7 cells. All these results suggested that Salecan/PAH semi-IPN hydrogels exhibited great potential for applications in soft tissue engineering.
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Surfaces and Interfaces
·
2022
·
IF 6.137
Qiang Yang,Jing Guo,Yuanfa Liu,Fucheng Guan,Fanchen Sun,Xueyong Gong
In order to compound gelatin (GEL) with poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P(3,4HB)) to improve the hydrophilicity and biocompatibility, a simple and convenient method for preparing P(3,4HB)/GEL composite nanofibrous (P/G-CNF) was proposed. Alkyl Polyglycoside (APG) was used as an emulsifier to prepare a stable P(3,4HB)/GEL composite solution, and novel P/G-CNF was prepared by electrospinning. The intermolecular interaction, micromorphology and porosity, crystallization and mechanical properties , hydrophilicity and cytocompatibility of P/G-CNF were characterized. The results reveal that P(3,4HB), APG and GEL form many hydrogen bonds . When the m(P(3,4HB):GEL) is 10:2, the as-prepared nanofibrous exhibit the best micromorphology with a diameter and porosity of 604 nm and 68.33%. With the increasing GEL content, the crystallization and mechanical properties of P(3,4HB)/GEL composite nanofibrous scaffold (P/G-CNS) are further enhanced and decline after reaching the maximum. The hydrophilicity of P/G-CNS is significantly improved by introducing GEL. The cell proliferation rate of P/G-CNS is higher than 100%, of which the cytotoxicity grade is 0, indicating that it is non-cytotoxic. The P/G-CNS has excellent cytocompatibility and provides better cell attachment, growth and proliferation, showing promising application prospects for tissue regeneration and biomedical materials .
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ADVANCED MATERIALS
·
2026
·
IF 29.1
Linlin Hou,Ying Liu,Hongjie Cui,Ziying Qin,Muyao Liu,Lunqiao Xiong,Yong Chen,Haifeng Wang,Junwang Tang
Ammonia, as an emerging energy carrier, holds significant strategic importance in the transition of future energy systems. Although the Haber-Bosch process remains the dominant industrial route for ammonia synthesis, its high energy demand and substantial carbon emissions underscore the urgent need for sustainable alternatives. Herein, ruthenium (Ru) with an average particle size of 0.9 nm supported on BaTiO 3 is developed, which enables photon-phonon co-driven ammonia synthesis at low temperature and pressure. Photon-generated electrons effectively mitigate the H 2 poisoning effect and more importantly remarkably promote N 2 adsorption and dissociation on Ru sites, thereby working together with phonons to accelerate hydrogenation along the dissociative pathway. As a result, the ammonia synthesis rate reaches 746.6 mmol g Ru −1 h −1 at 350 °C under ambient pressure and 2269 mmol g Ru −1 h −1 under 2 MPa via photon-phonon co-driven catalysis, representing a very low apparent activation energy of 24 kJ mol −1 and a 51-fold improvement compared to conventional photocatalysis while maintaining reaction stability for 120 h. This work provides a novel approach toward green ammonia synthesis and opens new avenues for advancing beyond the fossil fuel driven Haber-Bosch process.
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Journal of Physical Chemistry C
·
2023
·
IF 3.7
Li Fu,Zerui Liu,Pengjie Dong,Yingshu Guo
Screening a novel electrochemiluminescence (ECL) system and reducing electrochemical interference by lowering the ECL potential are crucial to ECL evolution. Herein, an ECL system is explored with different hydrazine compounds as coreactants and ternary CuInS2/ZnS nanocrystals (CIS/ZnS NCs) as a luminophore, demonstrating that hydrazine compounds with varied structures would assuredly affect the ECL triggering potential and efficiency. Electro-oxidized hydrazine-based coreactants containing a symmetrical structure and −N–N single bonds with strong reducibility could produce an efficient electron transfer recombination path with electro-oxidized CIS/ZnS NCs, which eventually generate efficient and low-triggering-potential ECL performance; otherwise, the hydrazine compounds with a double bond, such as −C═N or −C═O, or strong electronegative atoms would reduce the ECL efficiency and increase the ECL triggering potential, which result from double bonds or strong electronegative atoms of hydrazine compounds hindering the protonation of coreactants and then delaying the electron–hole recombination process. The structure of hydrazine-based coreactants with a −C═S double bond would competitively bond with the Cu element within CIS/ZnS NCs, contributing to the blank ECL with CIS/ZnS NCs as the luminophore. Furthermore, CIS/ZnS NCs exhibit two additional low hole injected processes under alkaline conditions through exploration of the differential pulse voltammetry (DPV) nature from CIS/ZnS NCs. The ultralow-triggering-potential of CIS/ZnS NCs around 0.11 V could be achieved by adjusting the hole injection processes of NCs and selecting pasoniazide as the coreactant, which is extremely below any previously reported ECL system. This work contributes to a deeper understanding of the ECL mechanism.
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INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Wenyu Lu,Hongzhen Cai,Wenbin Zhang,Zhiqiang Qi,Keyan Yang,Xiangsheng Han
Nanoscale biochar is a promising material for the remediation of polluted water due to its low-cost sustainability, nevertheless, which still hindered by the self-aggregation and vulnerability issues in actual wastewater. In this work, biochar nanosheets (BCN) were successfully molded into membranes and aerogels with the help of aramid nanofibers (ANF) through a co-assembled process. Ascribing to the improved molecular sieving effects and electrostatic interactions of co-assembled membranes, as well as the superior chemical and thermal stabilities, the resultant ANF/BCN x membranes exhibited favorable dye separation performances toward rhodamine 6 G (R6G) even under high-temperature (e.g., ∼96.1 L·m −2 ·h −1 ·bar −1 and ∼97.4% at 80 °C) and strong acidic conditions (e.g., ∼84.1 L·m −2 ·h −1 ·bar −1 and ∼97.9% for 10 wt% H 2 SO 4 solutions). Besides, due to the reduced vaporization enthalpy, the ANF/BCN x aerogels as solar steam generators also demonstrated promising capability for clean water production even in 5 wt% H 2 SO 4 solutions (an evaporation rate of ∼1.0 kg·m −2 ·h −1 and an impressive efficiency of ∼89.9% under one sun illumination). Compared to conventional biochar materials, this work offered simple feasible morphology engineering designs to prepare multifunctional biochar-based composites with unique co-assemble structures, while also demonstrated great potential in wastewater remediation under extreme conditions.
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INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Qiong Wu,Zhuoyu Wang,Baozheng Zhao,Ruiyang Zhao,Shitao Yu,Lang Huang
Promoted ethylene glycol (EG) yield from cellulose hydrogenolysis is achieved via using Nickel-tungsten doped carbon catalysts prepared from glucose ( x %Ni- y %WO x -GC T ). Synchronously metal loading and carbon formation endow the catalyst excellent catalytic performance and high stability. Mechanistic investigations of the effects of metal loading and BrØnsted acid on EG yield are conducted. Increasing W loading promotes the content of polymerized WO x and consequently increases the amount of polytungstate species, thus lead to an improved BrØnsted acid content. Results reveal that promotion of B/L acid facilitates cellulose hydrolysis and suppresses isomerization of glucose to fructose. Besides, high W loading is beneficial for reduction of WO x to form W 5+ , producing oxygen vacancies to promote retro aldol condensation (RAC) of glucose to form acetaldehyde alcohol (an important intermediate for EG). By adopting the optimized 9%Ni-12%WO x -GC 700 catalyst, a 100% cellulose conversion with a high EG yield of 65% is obtained due to the synergistic interactions between BrØnsted acid, W 5+ and Ni 0+ active sites.
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NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 46
·21289-21296
·
IF 3.3
Xiaodie Huang,Ziye Liu,Jingjing Tu,Changchun Ji,Ying-Hua Zhou
Hydrogen storage in chemicals is regarded as one of the sustainable techniques for tackling the energy-related challenges. However, hydrogen production from ammonia borane (NH3BH3, AB) is restricted by the inherent activity of metallic catalysts, which may be boosted by light irradiation. Herein, Pd-doped Co nanoparticles (NPs) were incorporated into a Zr-MOF composite composed of MXene-derived Ti3C2 nanosheets and UiO-66-NH2 (denoted as TUNS) by a double-solvent approach, obtaining a CoPd@TUNS composite. The optimized Co30Pd@TUNS composite exhibited outstanding catalytic activity for the complete dehydrogenation of AB within 0.6 min under 300 W Xe lamp light, with a high turnover frequency of 130.37 molH2 (molmetal)−1 min−1 at 298 K. The activity of Co30Pd@TUNS increased 10-fold under light irradiation as compared to that in the dark. For photocatalytic dehydrogenation, Co30Pd@TUNS was more active than Co30Pd@UiO-66-NH2 and Co30Pd/Ti3C2. Its excellent performance might be attributed to multiple factors including the photo-harvesting MOF generating electron–hole pairs, Ti3C2 nanosheets promoting the charge separation, and the Schottky effect facilitating electron migration to metal NPs for activating the substrate via an electron-deficient BH3 moiety, along with the attack of photogenerated hydroxyl radicals and water molecules. Moreover, the kinetic study manifested that AB dehydrogenation is a zero-order reaction with regard to the substrate. The great stability and recyclability of Co30Pd@TUNS was also confirmed after 5 runs. This study would widen a pathway for the design of an efficient MOF-based catalyst for hydrogen generation in the energy-related field.
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ENERGY & FUELS
·
2023
·
IF 5.3
Chuanhong Wang,Xuefang Chen,Shimiao Yao,Fen Peng,Lian Xiong,Haijun Guo,Hairong Zhang,Xinde Chen
The morphology and regeneration ability of adsorbents are important for gas pressure swing adsorption and separation. Herein, HCP-1 (a hyper-crosslinked polymer) and HCP@MAO(Fe) (a hyper-crosslinked polymer modified by ferrocene) with a spherical morphology are synthesized by a post-crosslinking reaction of chloromethylated styrene-divinylbenzene (Cl-St-DVB) beads for the separation of CO2/CO and CO2/CH4. Both static adsorption and dynamic separation tests verified that HCP@MAO(Fe) has the best gas adsorption and separation performance. The highest adsorption capacity of CO2 reached 1.24 mmol/g. The IAST selectivity of CO2/CO is up to 20.6. Moreover, HCP@MAO(Fe) can be regenerated by simple vacuum operation, contributing to the low value of adsorption enthalpy (24.5 KJ/mol). The adsorption mechanism between CO2 and the resin framework was also studied by experiments and electrostatic potential map analysis. A stronger interaction can be found between CO2 and HCP@MAO(Fe) as a result of the higher Mulliken charge of the cyclopentadiene structure.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Yichong Chen,Jinbing Cheng,Aihua Wang,Congbin Liu,Hailong Yan,Yang Qiu,Zhongzheng Wang,Paul K. Chu,Yongsong Luo
Electrospinning is carried out to fabricate Ti 3 C 2 T x @Co nanocomposite films composed of 2D Ti 3 C 2 -encapsulated Co nanoparticles derived from Co-MOF precursors. The unique 1D nanochain structure inherits not only the high electrochemical activity, but also excellent electron and ionic conductivity. The Co nanoparticles with good conductivity and MXene with high electrochemical activity improve the electrochemical properties giving rise to high capacity and good cycling stability. The Ti 3 C 2 flakes partially accommodate the volume changes during Li + insertion/extraction and the electrospinning technique prevents self-aggregation of Ti 3 C 2 flakes and aggregation of ZIF-67 nanoparticles, consequently producing a larger surface area and more active sites on the flexible anode. As a result, the MXene/Co composite has excellent properties such as a high reversible capacity of 422 mA h g −1 after 500 charging-discharging cycles at a current density of 1 A/g and retained capacity of 177 mA h g −1 at a rate of 5 A/g. The materials and strategy have large potential in commercial energy storage devices.
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