INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Chongjun Huang,Meng Xiao,Hao Cui,Jiayin Wang,Yurou Cai,Yu Ke
Antibacterial sodium carboxymethyl cellulose (CMC) gels were prepared via immobilizing ZnO and/or Ag/AgCl in situ to inhibit the aggregation of nano-photocatalyst. Epichlorohydrin was used as a crosslinking agent to prepare CMC gel, simultaneously introducing chlorine-containing branch chains as Cl reservoir to deposit AgCl. The composite gels presented pH responsive swelling properties, with the minimum swelling ratio at pH 8 and pH 4 for CMC gels containing Ag/AgCl and ZnO, respectively. Zn 2+ release from the nanocomposite gels was much greater in acidic than in neutral. Photocatalytic degradation constants of methyl orange by the composite gels under sunlight were greater than UV irradiation. Ag/AgCl loaded gel showed a degradation rate of 71.3 % under sunlight for 1 h, with a rate constant approximately 10.2 times higher than ZnO loaded gel. Extract liquids with the gel content below 0.33 mg/mL were noncytotoxicity. The nanocomposite gels presented good bactericidal rate against E. coli and S. aureus under sunlight for 6 h, comparatively to those in dark for 24 h. Bacteriostatic activity of Ag/AgCl loaded gel under sunlight for 6 h was much greater than that in dark for 24 h. The biocompatible nanocomposite gels with sunlight-catalyzed antibacterial activity would broaden the application of CMC gels.
研究领域:
材料科学
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纳米技术
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生物医学工程
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环境科学
·
化学
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产品关联
DOI
PubMed
高影响因子
IEEE SENSORS JOURNAL
·
2023
·Vol. 23
·期 4
·3475-3484
·
IF 4.3
Jiawen Yin,Wei Chen,Wanlei Gao,Xin Zhang,Bo Tang,Qinghui Jin
Considering the indispensable of pH for tap water, a pH sensor with the characteristics of an implantable, long-term stable, and long lifetime is urgently needed for on-line and in situ pH monitoring in tap water, but this is always a challenging issue. In this article, a competitive integrated electrochemical pH sensor is developed and batch manufactured via micro-electro-mechanical system (MEMS). A dense and ultrasensitive IrOx electrode is obtained for almost 1.5 times Nernst response (−82.88 mV/pH), after preparation process optimization. A Si-Si3N4-KCl agar gel-polydimethylsiloxane (PDMS) multilayer structured Ag/AgCl electrode is designed and proven to be a long lifetime (>40 days) and be stable. By integrating with the IrOx film and solid-state Ag/AgCl electrode on a mini chip and verifying the effectiveness of the as-fabricated sensor by pH detection, the miniature pH sensor demonstrates wide detection range (1.8–12), stirring sensitivity, desirable linearity ( ${R}^{2}=0.999$ ), ideal repeatability and good resistance to other interference substances. Particularly, by employing the mass-production technique, favorable response consistency (relative standard deviation (RSD) < 2%) is witnessed, offering the opportunity to mass-produce the proposed sensor in the future. What’s more, the sensor still kept 91.7% sensitivity when compared to the sensitivity obtained at its initial state, after continuously operating for 32 days. Undoubtedly, the sensitive, durable, miniaturized, and mass-produced pH sensor proposed in this article is a competitive device to implant into the water pipeline for pH in situ online monitoring.
研究领域:
生物医学工程
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微纳传感技术
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环境监测
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电化学传感器
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转化医学
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水质分析
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植入式器件
✓ 已验证
DOI
高影响因子
RSC Advances
·
2014
·Vol. 4
·期 106
·61736-61742
·
IF 3.708
Shu-Tao Gao,Wei-Hua Liu,Ning-Zhao Shang,Cheng Feng,Qiu-Hua Wu,Zhi Wang,Chun Wang
Efficient utilization of solar energy has received tremendous attention due to the increasing environmental and energy concerns. In this paper, a plasmonic photocatalyst integrated with metal–organic framework (MOF) material, Ag/AgCl@ZIF-8, was fabricated for the first time. The unique hetero-junction structure of Ag/AgCl@ZIF-8 greatly enhanced its photocatalytic activity. Selecting RhB as a model pollutant, 98% of RhB can be degraded after 16 min under solar radiation. The relationship between the photocatalytic activity and the structure of Ag/AgCl@ZIF-8 hybrid materials was discussed and the possible reaction mechanism was proposed. The high photocatalytic activity of the hybrid material under solar radiation revealed its great application potential in directly harvesting solar energy to solve the environmental pollution issues.
研究领域:
材料科学
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光催化
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环境科学
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纳米材料
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能源化学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2020
·Vol. 27
·期 11
·11990-12000
·
IF 3.056
Cui Yanping,Thathsarani Nimesha,Peng Liang,Gao Ya,Lei Lidan,Zhou Zhengwei,Liang Lili,Shi Xiaoyan
Innovative paramagnetic one-dimensional (1-D) core-shell Fe-Ag@AgCl visible light-driven photocatalysts are synthesized through a template-assisted electrodeposition method trailed by FeCl 3 in-situ oxidation. The metallic nature of Fe-Ag@AgCl is confirmed through scanning electron microscopy (SEM) and crystal nature through X-ray diffraction (XRD). The controllable diameter of Fe-Ag is obtained through the selection of hollow size of the polycarbonate (PC) template. Electron impedance spectroscopy (EIS) confirms through the introduction of Fe to the Ag core that has prolonged the recombination of electron and hole. Escherichia coli ( E. coli ) are employed as the target bacteria to evaluate the photocatalytic disinfection performances. A total of 1.30 mg of Fe-Ag@AgCl is proved to be able to completely inactivate 10 7 CFU (colony forming units)/mL after 120 min of visible light irradiation. The transition electron microscopy (TEM) confirms the stability of the material after the photo reaction. As Fe-Ag@AgCl possesses magnetic properties, the material is recovered through the application of an external magnetic field. SEM images and results of 3D emission extraction matrix (EEM) depict that the bacteria cell death is caused by membrane permeability changes caused by the reduction of membrane associated proteins.
研究领域:
环境科学
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材料科学
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微生物学
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产品关联
DOI
PubMed
高影响因子
Crystals
·
2019
·Vol. 9
·期 8
·401
·
IF 2.061
Yuxiang Lu,Yazhou Qin,Dongdong Yu,Jianguang Zhou
In this work, we have synthesized hexapods AgCl crystals with mace pods for the first time. Diallyldimethylammonium chloride (DDA)-controlled stepwise evolution of AgCl crystals from octahedron to hexapods with mace pods are achieved by one-pot method. The intermediates have been captured which show the basic process of crystal growth. In this process, octahedra AgCl crystals firstly grow along the <100> direction and then change to grow in the <110> direction. At the same time, the size of AgCl grow from 2 μm to 20 μm. Due to the poor absorption of visible light by AgCl, sodium borohydride(NaBH4) is used to reduce AgCl hexapods with mace pods crystals. By changing the mole ratio(R) of NaBH4to AgCl, the new structure was reduced to obtain a series of Ag@AgCl microstructures. Visible light catalysis effects of the Ag@AgCl microstructures on degradation of methyl orange (MO) were investigated. The Ag@AgCl microstructures with R = 0.02 have a high photocatalytic performance, which completely degrades MO in 40 min.Keywords:hexapod AgCl;one-pot method;Ag@AgCl microstructure;MO degradation
研究领域:
材料科学
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2015
·
IF 7.435
Xingxing Li,Zaiyin Huang,Zuojiao Liu,Kaisheng Diao,Gaochao Fan,Zhan Huang,Xuecai Tan
Much effort has been expended recently to investigate photocatalytic mechanisms by in situ spectroscopy. We introduced an alternative method to study photocatalysis thermodynamically by tracing thermodynamics and kinetics in real-time using a light-emitting diode photocalorimeter that includes a commercial microcalorimeter and fiber optics. We were almost able to adjust its baseline to zero by tuning the incident light intensity. After calibration, we used the photocalorimeter to trace heat changes and kinetics in the photocatalysis of methylene blue over a visible-light-driven Ag@AgCl photocatalyst. Three main heat changes occurred: (і) photoresponse of methylene blue molecules and photocatalyst, (іі) balance between endothermic photoresponse and pollutant photodegradation, and (ііі) stable exothermic stage in pollutant photodegradation. The photocalorimeter underwent an initial endothermic reaction and a subsequent exothermic stage, and finally maintained a stable exothermic rate of −(0.1543 ± 0.0446) mJ s −1 with a pseudo-zero-order process. The heat effects of stages (і), (іі), and (ііі) are 73.8, 143.9, and −1939.2 mJ, respectively. The photocatalytic mechanism was discussed in detail. Results from this study are critical to the development of promising applications in in situ photochemistry, physics, and biomedicine.
研究领域:
化学
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环境科学
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物理化学
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2021
·Vol. 28
·期 3
·1715-1729
·
IF 5.044
Liu Hongyu,Yang Lin,Zhan Yifei,Lan Jianwu,Shang Jiaojiao,Zhou Mi,Lin Shaojian
In this work, a durable and sunlight-driven self-cleaning superhydrophobic cotton fabric was developed as a multifunctional oil/water separation material. First of all, Ag/AgCl was successfully deposited on the polydopamine modified cotton fabric surface by electrostatic adsorption, then the Ag/AgCl loaded fabric was coated by the polydimethylsiloxane (PDMS) via simple dip-coating method. The as-prepared cotton fabric (PDMS-Ag/AgCl@CF) presented the superhydrophobic property with water contact angle about 155°. Meanwhile, the prepared PDMS-Ag/AgCl@CF exhibited great tolerance and resistance to broad pH and various organic solvents, and it can also withstand 50 cycles of abrasion or 60 min of ultrasound treatment without an apparent decrease of superhydrophobicity, indicating its outstanding mechanical durability. As expected, this durable superhydrophobic fabric can availably separate various oil/water mixtures by gravity-driven force with high separation efficiency (over 97.8%), and it possessed good reusability. Additionally, the PDMS-Ag/AgCl@CF exhibited an outstanding self-cleaning performance under sunlight irradiation, due to visible light photocatalytic performance of Ag/AgCl. Finally, the resultant cotton fabric displayed good antibacterial activity. Therefore, in consideration of its prominent comprehensive performances, it is expected that the PDMS-Ag/AgCl@CF can be used as a promising material for oily water remediation.
研究领域:
材料科学
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环境科学
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光催化
·
抗菌材料
✓ 已验证
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 24
·8063
·
IF 4.6
Chunyong Zhang,Haoyu Wang,Li Shu,Zhe Li,Jirong Bai,Yinpin Wen,Lin Zhu,Yin Geng,Hengfei Qin
PEDOT-Ag/AgCl is a highly promising material with dual functions of hydrogen evolution reaction (HER) and supercapacitors. In this study, a simple low-temperature stirring and light irradiation method was used to synthesize PEDOT-Ag/AgCl on the surface. Then, PEDOT-Ag/AgCl was analyzed using X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and transmission electron microscopy. PEDOT-Ag/AgCl reacted in 1 M KOH alkaline electrolyte with an overpotential of 157 mV at 20 mA·cm−2and a Tafel slope of 66.95 mv·dec−1. Owing to the synergistic effect of PEDOT and Ag/AgCl, this material had a small resistance (1.7 Ω) and a large specific capacitance (978 F·g−1at current density of 0.5 A·g−1). The synthesis method can prepare nanostructured PEDOT with uniformly-distributed Ag nanoparticles and rod-shaped AgCl on the surface, which can be used as both HER electrocatalysts and supercapacitor electrodes.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS RESEARCH
·
2014
·Vol. 29
·期 10
·1175-1182
·
IF 1.815
Wang Wenyan,He Yiming,Wu Tinghua,Wu Ying
SnZn(OH) 6 (ZHS) hollow cubes were synthesized by a facile self-templated method at room temperature, and Ag/AgCl/ZHS particles were prepared by a photodepositing method. The crystalline structure and morphology of the prepared particles were characterized by x-ray diffraction, UV-vis diffuse reflectance spectroscopy, scanning electron microscopy, and N 2 adsorption. The results indicated that the particles had almost uniform monoclinic geometry and size. The photocatalytic oxidation of Rhodamine B was used to evaluate the photocatalytic activity of the synthesized photocatalysts. It is found that the hollow Ag/AgCl/ZHS showed the highest catalytic performance under visible or UV light, which can be attributed to the synergetic effect of Ag, AgCl, and ZHS.
研究领域:
材料科学
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光催化
·
纳米材料
·
环境化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yingdong Hao,Yingxiao Wang,Pengyu Chen,Lu Chen,Wei Wei,Nannan Sun
Photocatalytic oxidation of methane (CH 4 ) to value-added chemicals offers a sustainable and promising approach for chemical synthesis, however, efficient catalysts for the activation of inert C H bonds remain challenging. Herein, a novel Ag-AgCl biphasic composite was used as co-catalysts to modify ZnO semiconductor (Ag-AgCl/ZnO-z). Structure properties and catalytic performance in photocatalytic oxidation of CH 4 of the sample were systematically investigated, together with comparison with pure ZnO (ZnO-z) and a single Ag modified counterpart (Ag/ZnO-z). It was found that Ag-AgCl/ZnO-z was enriched with heterogeneous interfaces, which facilitated ultrafast carrier transport and their prolonged separation. Interestingly, AgCl acted as a hole acceptor, and the lattice Cl can be directly activated to •Cl, which is then responsible for forming a new •CH 3 formation pathway via a hydrogen atom transfer (HAT) mechanism. Moreover, a Cl-looping process can be established so that the catalyst remained stable during cyclic reactions. Under the optimum conditions, an excellent liquid oxygenates productivity of 12,731 μmol·g −1 ·h −1 was achieved. This work presents a prototype for designing biphasic composite co-catalysts, thereby offering valuable insights into introducing multiple CH 4 activation pathways.
研究领域:
光催化
·
材料科学
·
化学合成
·
能量转换
·
环境化学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Ming Zhang,Lei Shi,Xiling Du,Zhongrui Li,Yanhua Shi,Congcong An,Jian Li,Chengyu Wang,Junyou Shi
Directional transport of liquid is crucial for many applications including seawater desalination, oil/water separation, fog collection, membrane distillation and so forth. Particularly, Janus wood membranes, with asymmetric special wetting property on two sides, and mechanically robust bio-based substrate with ample pores and open nano-/micro-channels, present enticing opportunities to address this challenge. In this study, we report a Janus mesoporous wood-based membrane demonstrating the capabilities for simultaneous oil/water separation, aromatic dyes removal, and seawater desalination. Thanks to the inner driving force arising from the asymmetric special wettability, unique wood microchannels for the transpiration of trees, and the synergistic effect of PPy and Ag/AgCl NPs anchored to wood matrix, Janus mesoporous wood-based membrane would promote the desired transport without any external energy input for high-efficiency seawater desalination and switchable oil/water separation. Meanwhile, the aromatic dyes and other organic compounds in industrial wastewater or polluted seawater would get more opportunities to contact with the anchored Ag/AgCl NPs during flowing through the wood microchannels. Above advantages endow the Janus mesoporous wood-based membrane with excellent pollutant degradation efficiency (MB: 86.4 %, RhB : 91.9 %), high solar conversion efficiency (95.33 %), outstanding separation efficiency towards oil-in-water emulsion (∼99.51 %), remarkable oil adsorption capacity (∼8 times of its own weight), and great antibacterial efficiencies (E. coli: 99.87 %, S. aureus : 99.78 %, B. subtilis: 99.96 %). Results also show that this Janus mesoporous wood-based membrane has the satisfactory resistance to acid and base, robust mechanical structure, good recycling stability, high salinity tolerance and remarkable self-desalting capability. This study represents a new avenue for fabrication and design of Janus wood-based photothermal materials, and certainly will contribute to alleviating the global water and energy shortage issue.
研究领域:
材料科学
·
环境科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2015
·
IF 3.368
Shutao Gao,Tao Feng,Cheng Feng,Ningzhao Shang,Chun Wang
In this paper, a novel visible-light responsive photocatalyst of Ag/AgCl@MIL-101 was synthesized via vapor diffusion-photoreduction strategy. The as-prepared composite material was characterized using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy, ultraviolet–visible diffuse reflection spectra and X-ray photoelectron spectroscopy. Due to the synergistic effect between Ag/AgCl and MIL-101, the composite photocatalyst exhibited an enhanced and stable photoactivity for the degradation of Rhodamine B under visible light irradiation. The relationship between the photocatalytic activity and the structure of Ag/AgCl@MIL-101 hybrid material was discussed and the possible reaction mechanism was proposed.
研究领域:
材料化学
·
环境催化
·
纳米材料
·
光催化
·
多孔框架材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）