Advanced Materials Interfaces
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2022
·Vol. 10
·期 5
·2202065
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IF 6.389
Wen-Ying Yang,Di Zhou,Jia-Lu Shen,Zhi-Kang Xu,Ling-Shu Wan
Co-deposition of phenols and amines inspired by mussel-inspired chemistry has attracted much attention in the field of surface and interface science and technology. However, most deposition systems are still limited to phenols with at least one catechol group. In this work, a novel enzyme-triggered co-deposition system based on a natural phenol (gentisic acid, GA) and a kind of biomacromolecule (chitosan, CS) is reported. With the catalysis of laccase, GA can be oxidized and further react with CS to form effective surface coatings on various substrates such as polypropylene microfiltration membrane (PPMM). The co-deposition process takes only 40 min at room temperature and endows the membrane with superhydrophilicity and underwater superoleophobicity. The modified membranes show excellent separation performance, reusability, and long-term stability for the separation of oil-in-water emulsions. The modified membranes are highly charged (pI ≈7.2) and capable of efficient dye adsorption. In addition, the modified membranes possess better protein resistance properties compared with the nascent membranes. This work demonstrates a green, mild, and highly efficient surface modification process based on laccase catalysis. The co-deposition system comes from natural sources and expands the phenol family for constructing multi-functional surface coatings.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
·
IF 5.518
Rongping Xu,Jinlong Li,Guozhe Sui,Yan Zhuang,Dongxuan Guo,Ze Luo,Shuang Liang,Hong Yao,Chao Wang
The construction of heterojunctions is considered as an effective strategy to boost catalytic degradation activity of photo-Fenton catalyst. Herein, a series of CdS@CuS/g-C 3 N 4 (CC-x/CN) heterojunctions have been successfully prepared by hydrothermal and cation exchange process, which have been applied for the removal of methyl orange (MO) via photo-Fenton process. The results demonstrate that the exchange of Cu 2+ for Cd 2+ on g-C 3 N 4 could inhibit the aggregation of CdS@CuS and increase the light absorption range and the active sites. Under visible light illumination, CC-10/CN (molar ratio of CuS to CdS is 10%) exhibits the optimal photo-Fenton-like catalytic performance with the degradation efficiency of 96% towards MO (40 mg L −1 ) and the total organic carbon removal rate of 75% within 35 min illumination. The apparent reaction rate constant of CC-10/CN (0.088 min −1 ) is approximately 22 and 6.29 times higher than those of pure g-C 3 N 4 and CdS@CuS (molar ratio of CuS to CdS is 10%), respectively. The enhanced photo-Fenton catalytic activity of CC-x/CN is mainly ascribed to the formation of the photo-Fenton effect between CC-10 and g-C 3 N 4 , which promotes the conversion and recycling of Cu 2+ and Cu + . Meanwhile, the successful formation of the heterojunctions reduces the recombination rate of carriers. In addition, the cycling experiments demonstrate that CC-10/CN possesses favorable stability and recoverability. Overall, the well-designed CC-x/CN heterojunctions reveal desirable potential application in the effective treatment of sewage via photo-Fenton process.
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JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Yirong Sun,Jundong Zhong,Ziyu Lin,Ruiyin Sun,Liyuan Chen,Zhenhua Jiang,Jinhui Pang
Interfacial polymerization has always been a research hotspot for the preparation of polyamide (PA) membranes for molecular sieving. In previous reports, water-soluble amines (such as piperazine (PIP), m-phenylenediamine (MPD), etc.) were mostly used as monomers containing amino functional groups in the aqueous phase to conduct interfacial polymerization with 1,3,5-mesotribenzoyl chloride (TMC) in hexane , resulting in a dense PA film. However, this approach limits the diversity of polymer structures in PA films. To introduce water-insoluble 9,9-Bis(4-aminophenyl)fluorene (BAF) with a rigid twisted structure into interfacial polymerization, this study reports the interfacial polymerization of BAF in DMF/water solution with TMC in n-hexane. BAF-PA films with a larger free volume compared with MPD-PA were successfully prepared. The anomalous interfacial diffusion phenomenon was explained by the interfacial properties and molecular diffusion mechanism of the two-phase solvent and was confirmed by observing the microscopic morphology of the film. Since the structure of BAF-PA has a larger free volume, the BAF-PA film prepared by co-solvent interfacial polymerization has higher permeance to methanol (23.88 L m −2 h −1 bar −1 ). Meanwhile, it has more than 90% rejection of dyes with molecular weights of 585 Da and above. The large free volume PA film prepared with DMF/water mixed solvent exhibited excellent performance in organic solvent nanofiltration . This method also offers the possibility of introducing other water-insoluble amines into the interfacial polymerization to prepare PA films.
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APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Lifang Yang,Aoqi Li,Tan Dang,Yunfei Wang,Liang Liang,Jun Tang,Yanjuan Cui,Zizhong Zhang
S-scheme In 2 S 3 /Zn 3 In 2 S 6 microspheres were successfully prepared through hydrothermal means for enhanced photocatalytic H 2 evolution with simultaneous photodegradation of bisphenol A. The microspheres were assembled by embedding 2D In 2 S 3 nanosheets into 2D-3D Zn 3 In 2 S 6 hierarchical microspheres to enhance visible light absorption and separation/migration of photo-excited charge carriers. In bisphenol A aqueous solution, the photocatalytic H 2 evolution rate on In 2 S 3 /Zn 3 In 2 S 6 shows 15.7 and 7.9-folds improvements against that of the individual In 2 S 3 and Zn 3 In 2 S 6 . Meanwhile, the degradation efficiency of bisphenol A is up to 95.8 %. The S-scheme charge transfer mechanism in In 2 S 3 /Zn 3 In 2 S 6 microspheres maximizes exerting the redox capability of Zn 3 In 2 S 6 for H 2 evolution and In 2 S 3 for bisphenol A degradation.
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Materials Advances
·
2022
·Vol. 4
·期 1
·223-230
·
IF 0
Sihan Tang,Xinyue Lu,Peng Geng,Daobing Chen,Yunsong Shi,Jin Su,Yan Zhou,Bin Su,Shifeng Wen
Polymers possessing highly adjustable physicochemical properties have been accepted as ideal flexible materials for solar thermal evaporation, which is considered as an eco-friendly and progressive strategy for water reclamation. Conventional dual-network polymers based on the construction of covalent and non-covalent interactions usually involve toxic reactive monomers, initiators and organic solvents in 3D printing. The integration of additive manufacturing into the construction of supramolecular non-covalent dual-networks to achieve structural and performance optimisation remains a noteworthy part. Here we developed a 3D-printed anti-swelling polyelectrolyte evaporator consisting of k-carrageenan (CG), poly(diallyldimethylammoniumchloride) (PDADMAC), and carbon nanotubes (CNTs). CG-PDADMAC-CNT (CGP-CNT) was constructed by non-covalent supramolecular interactions (hydrogen bonds and electrostatic complexation). The exhibited “sol–gel” transition based on thermo reversible hydrogen bonds and helical structure reconfiguration facilitated three-dimensional shaping, while strong electrostatic complexation stabilized the evaporator structure. As a proof-of-concept, the 3D-printed evaporator was intrinsically antibacterial and exhibited remarkable swelling resistance (water bath at 100 °C for 14 days, pH = 13) to a harsh water environment and stable solar thermal evaporation (2.3 kg m−2 h) under 1 sun irradiation, which was one of the prominent values among the evaporators prepared by direct-ink-writing (DIW).
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JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Ming Wang,Mengxin Li,Zhongyi Ren,Zhaohui Fei,Yingfei Hou,Q. Jason Niu
The discharge of wastewater containing organic micropollutants not only causes severe environmental pollution, but also exacerbates the scarcity of freshwater resources and poses a serious threat to human health. The nanofiltration (NF) membrane has unique advantages and obvious energy-saving effects in the demineralization of organic micropollutants. Poly(piperazine) amide NF membrane exhibits the poor organic micropollutants/salt selectivity and low water permeance. Therefore, developing a novel NF membrane with high water permeance and superior selectivity is of significance. In this study, a loose nanofiltration (LNF) membrane is fabricated by interfacial polymerization with 1, 4, 7, 10-tetraazacyclododecane (Cyclen) as a new aqueous phase monomer to modulate the polyamide microstructure. The steric structure of Cyclen is larger than that of PIP, and the steric hindrance increases, resulting in a low stacking density of the formed polyamide polymer. Compared with the PIP-based NF membrane, the fabricated Cyclen-TMC LNF membrane has a smoother surface, a higher density of carboxyl groups, and a lower degree of cross-linking. The Cyclen-TMC membrane exhibits the considerable water permeance, with the corresponding rejection of 99.9% and 92.7% for methyl blue and tetracycline (pH = 9), respectively, while maintaining a low rejection for monovalent salts (e.g., 4.5% for NaCl). Furthermore, the LNF membrane shows a superior anti-fouling performance with the relatively smooth, highly negatively charged surface and low operation pressure. The novel LNF membrane exhibits a high potential for textile and pharmaceutical wastewater treatment . This study provides a new candidate to regulate the separation performance of NF membranes using new aqueous monomers.
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CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Yan Li,Yun Liu,Ziqian Liu,Xin Wan,Hui Chen,Jinrong Zhong,Yue-Fei Zhang
Here we report an efficient strategy to separate and recycle acid blue 93 (AB93) from mixed anionic dyes selectively within sodium hydroxide activated A/CS adsorbent (N-A/CS). This work broke the common sense that the larger the specific surface area, the better the adsorption property is, which provided an alternative strategy to separate dyes. The adsorption equilibrium of AB93 could be achieved approximately within 1–2 min, and the maximum adsorption capacity was up to 2500 mg/g. Besides, it can be activated continuously and reused at least 15 times. In mixed anionic dyes, the adsorption selectivity of N-A/CS on AB93 in the mixture of AB93 and acid fuschin (AF) reached up to 99.7 %. Molecular dynamics simulation revealed that the trend of adsorption energy for dyes qualifies well with the experimental order of adsorption capacities and molecular sizes among five anionic dyes based on molecular matching effect. Thus, N-A/CS is a low-cost, easily-preparable, significantly-effective-and-reusable adsorbent, providing a promising “size-matching” strategy to adsorb multi-component dye systems.
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PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 12
·5903-5914
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IF 3.3
Xiaoqing Wang,Yujie Ren,Hongjing Lu,Zirui Song,Yangdong Cui,Shiyao Jin,Binhe Zhao,Yongjiang Wang,Junzi Zhao,Chunhua Xiong
Using macroporous ion exchange resin macrosphere D113 as an inexpensive organic carbon source, a composite precursor was constructed with Bi(OH)3 using a hydrothermal method. A series of new bismuth-based composite photocatalytic materials, Bi2O3/C, were prepared using pyrolysis technology and it was shown that the bismuth element existed in the form of Bi2O3 in the composite. It was uniformly distributed on the surface of a graphitized carbon macrosphere and exhibited a high electron transfer rate. The UV-vis diffuse reflectance spectrum and photoluminescence verified that Bi2O3/C exhibited a good light absorption performance and a low photogenerated electron hole recombination rate due to the optimized band structure. Electrochemical tests such as an i–t curve and electrochemical impedance spectroscopy showed that Bi2O3/C-500 had a good photoelectric response. In combination with the Tauc curve, the band structure of Bi2O3/C-500 was verified. Bi2O3/C-500 could degrade methylene blue (20 mg L−1) completely in 120 min, and the degradation rate remained at 90.30% for three photocatalytic cycles. The preparation method of the new Bi2O3/C was simple, inexpensive, and convenient for the commercial application of dye wastewater.
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ACS ES&T Engineering
·
2023
·
IF 7.1
Lingya Fei,Lun Lu,Cheng Chen,Liguo Shen,Bisheng Li,Mingzhu Zhou,Jiujing Xu,Boya Wang,Hongjun Lin
Intelligent and controllable water and molecule transport through a membrane is of crucial significance for broadening membrane applications in smart-gating filtration. Herein, inspired by the extensive redox reactions in living systems, we report a redox-responsive graphene oxide (GO) membrane assembled by introducing a supramolecular host–guest complex between ferrocene (Fc) and β-cyclodextrin (CD) into the interlayer of GO. The well-designed intelligent responsive membrane, which was composed of Fc-modified GO and CD-modified GO, possessed fascinating redox-response property. Utilizing the reversible deformation and restoration of the Fc/CD complex, the size of the interlayer nanochannel between adjacent GO nanosheets was tunable by changing the membrane redox state. The water permeance and molecular separation performance of the membrane could be reversibly regulated with a high gating ratio (5.6) by virtue of the redox-responsive interlayer nanochannel. In addition, the obtained membrane also demonstrated superior cyclic response performance, excellent antifouling ability, and satisfactory stability in harsh environments. This work provides an innovative strategy for the fabrication of redox-responsive membranes, showing promising applications in intelligent and controllable gating and controllable water-contaminant removal process.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Minghao Xu,Jiaojiao Yang,Bin Lu,Rufen Chen,Sen Wang,Hui Liu
In this study, the NiCo 4 -LDH with abundant surface oxygen vacancies (SOVs) was synthesized by a simple solvent thermal method, and was used to activate peroxymonosulfate (PMS) through heterogenous catalysis for ciprofloxacin (CIP) degradation. The OV-rich NiCo 4 -LDH/PMS system exhibited excellent CIP removal efficiency and rapid kinetics, as 95.0 % of the CIP was degraded within 10 min and the COD removal rate was 71.2 %. SO 4 •− , • OH, O 2 •− and 1 O 2 were involved in the degradation of CIP, with O 2 •− contributing the most, followed by SO 4 •− , • OH and 1 O 2 . Ethanol, as solvent, could modulate the intrinsic electron properties and produce abundant OVs on the surface of NiCo 4 -LDH, which enhanced the generation of O 2 •− . This study shed new light on the skillful design and application of heterogeneous catalysts for environmental remediation.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jing Wu,Jin Qu,Guang Yin,Tingting Zhang,Hao-Yu Zhao,Fan-Zhen Jiao,Ji Liu,Xiaofeng Li,Zhong-Zhen Yu
Although most solar steam generation devices are effective in desalinating seawater and purifying wastewaters with heavy metal ions , they are ineffective in degrading organic pollutants from wastewaters. Herein, we design novel solar-driven water purification devices by decoration of three-dimensional pinecones with MoS 2 nanoflowers via a one-step hydrothermal synthesis for generating clean water. The vertically arrayed channels in the central rachis and the unique helically arranged scales of the hydrothermal pinecone can not only transfer bulk water upward to the evaporation surface, but also absorb more solar light from different incident angles for solar-thermal evaporation and photodegradation of wastewaters under omnidirectional irradiations. The decorated MoS 2 nanoflowers can not only enhance the solar-thermal energy conversion efficiency, but also decompose organic pollutants in the bulk water by their photocatalytic degradation effects. The resultant hydrothermal pinecone with in situ decorated MoS 2 (HPM) evaporator exhibits a high evaporation rate of 1.85 kg m −2 h −1 under 1-sun irradiation with a high energy efficiency of 96 %. During the solar-driven water purification processes, the powdery HPM can also photodegrade organic pollutants of methylene blue and rhodamine B with high removal efficiencies of 96 % and 95 %, respectively. For practical demonstration, by floating in the methylene blue solution under 1-sun irradiation, the bulky HPM can generate clean water by simultaneous solar-thermal evaporation and photocatalytic degradation. The integration of solar steam generation and photocatalytic degradation mechanisms makes the HPM evaporator highly promising for practical high-yield purification of wastewaters.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Boxuan Yao,Ke Zhang,Xiaoyang Liu,Hua Wei,Zihan Li,Jiarui Zhou,Guangfei Yuan,Xin Wang,Shenghong Yang,Jian Liu
Pursuing special negatively charged adsorbents is critical to selectively removing cationic pollutants from effluent. Herein, we proposed a versatile preparation strategy of negatively charged saccharide-based polymers using easily available saccharides as building blocks and hexachlorocyclotriphosphazene as a linker in a facile “one-step” method. Because of the existence of numerous hydroxyl groups and phosphine nitrile units in the skeleton, these polymers show selective adsorption capacity towards cationic dyes and pharmaceuticals, but not for ionic dyes and uncharged bisphenol A. Notably, β-cyclodextrin-based polymers (β-CDPs) displayed remarkable adsorption towards methylene blue (Q m , 1563 mg g −1 ) and promethazine (Q m , 944 mg g −1 ). Systematic experiments revealed that the synergy of “host-guest” inclusion, electrostatic attraction, and π-π interaction promoted the selective and efficient adsorption of cationic pollutants. Given the efficiently selective adsorption of cationic dyes and pharmaceuticals, these negatively charged saccharide-based polymers should be candidates for the adsorption of other cationic pollutants, including heavy metal ions. This work expanded the scope of the special utilization of biomass-based adsorbents for water remediation.
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危险品化学品经营许可证（带存储）