Nitrogen oxide (NOx) pollution has become one of the most challenging problems in China past 20 years. In this study, on basis Jilin Province Atmospheric Environmental Quality Bulletin and hourly NOx data from Environment Automatic Monitoring Station Changchun, temporal spatial variations concentration province Changchun their relationships with various pollutants meteorological factors were analyzed. The results show that had highest all cities province, a high center low east west. areas...

Indigo has been widely used as a dye in the industrial dyeing due to its good color fastness cellulose fibers. However, excess reducing agent, "insurance powder (Na2S2O4)", was always actual production of factory, sparking serious pollution (water and air pollution). Herein, we developed practical environment-friendly indirect electrochemical reduction indigo, applied this method for cloth dyeing. The device designed combination source electro-catalytic iron-triethanolamine-calcium gluconate...

Abstract The development of environmentally friendly, multifunctional conductive membranes is an ideal candidate for future new electronic components. Some cellulose-based sensors have been studied, such as pressure sensors, hydrothermal flexible optoelectronic devices, and electrochemical energy storage, etc. However, there are very few studies on materials in Joule heating. In this study, we adopted a simple friendly silane crosslinking method to crosslink cellulose graphene oxide (GO)...

At present, electrospinning technology is a versatile and simple method for generating nano-scale membranes, it provides attractive solutions in solving environmental problems many energy problems. However, such films generally have low mechanical properties which limit their use industry. Nanocellulose with excellent properties, high specific surface area, renewable nature an ideal green reinforcing material. In this paper, the cellulose nanocrystals (CNC) coatings on electrospun polyamide...

Expanded graphite (EG) has been used to store phase change materials (PCM) enhance thermal conductivity and avoid leakage. However, systematic investigation on physical structure of various embedded PCMs in EG is not reported. Besides, the effect environment behavior PCM/EG composites investigated yet. In this work, three common (including myristic acid (MA), polyethylene glycol (PEG) paraffin wax (PW)) were obtained. As a result, capillary force between supported encapsulation EG. had...

The cellulose/polyvinyl alcohol (PVA)/expanded graphite (EG) 3D porous foam, which has wide application prospects in cost-effective dye removal, was prepared by physical crosslinking and foaming technology. foam material an obvious network structure, exhibiting excellent removal efficiency for methylene blue (MB) aqueous solution. largest MB adsorption capacity of the is 110.81 mg/g. process follows pseudo-2nd order kinetics Freundlich isotherm model, indicating that controlled active...

Polyester nonwoven fibrous material is widely used in construction and automobile industries for thermal insulation purposes. It worthy meaningful to understand the effect of structural parameters on property. Fiber orientation, as one most vital parameters, has a significant However, there been little quantitative analysis focusing this aspect. This paper theoretically experimentally analyzes conductivity samples with varying fiber orientation. Existing models were selected predict...

Abstract Based on the current rapid development of electronic products, light-weight, processable, environmentally friendly, long-life, durable, less corrosive, and tunable conductive composite materials with multiple applications may be direction next-generation devices. In this work, for first time, we employed 3-Mercaptopropyltrimethoxysilane (3-MT) to modify viscose nonwovens enhance copper plating process. The prepared samples were characterized by Fourier transform infrared, Wide-angle...

Sichuan Basin is one of the most densely populated areas in China and world. Human activities have great impact on air quality. In order to understand characteristics overall pollutants recent years, we analyzed concentrations six monitored 22 cities during period from January 2015 December 2020. During study period, annual average CO, NO2, SO2, PM2.5 PM10 all showed a clear downward trend, while ozone concentration was slowly increasing. The spatial patterns CO SO2 were similar....

Abstract In this study, we investigated how the chemical structural properties, mechanical and morphology of large‐size graphene platelets (LGPs) doped glass fabric (GF)/epoxy composites are affected by varying loading amounts LGPs. Scanning electron microscope results revealed that dispersion filling effect LGPs can improve flowability resin, reducing aggregation shrinkage resin on surface, thereby facilitating better infiltration coverage surface. From spectrum analysis, binding with epoxy...

In this study, a facile phase inversion method was used to design an expanded graphite (EG)/polyvinylidene fluoride (PVDF) porous composite, simultaneously achieving good flexibility, mechanical strength, and satisfying electrostatic dissipation (EDS) material criteria (105–1011 Ω). The composite materials exhibit dramatic improvement in the electrical conductivity, surface volume resistivity of reducing by about six orders magnitude from 1.78 × 1012 Ω 4.31 Ωcm 4.79 106 5.55 Ωcm,...

Phase change materials (PCMs) textiles have been developed for personal thermal management (PTM) while limited loading amount of PCMs in reduced buffering effect. In this work, we proposed a sandwich fibrous encapsulation to store polyethylene glycol (PEG) with PEG 45 wt %, which consisted polyester (PET) fabrics hydrophobic coating as protection layers, polyurethane (PU) nanofibrous membranes barrier layers and PEG-loaded viscose fabric PCM-loaded layer. The leakage was totally avoided by...

The method of electrochemical reduction utilizes electrons as agent to achieve the indigo, vat dyes and pollution emissions, well recycling electrolyte. In this study, Ca 2+ -Fe 3+ -triethanolamine (TEA) redox system was used mediator indirect indigo. optimization parameter analyzed by efficiency (RE) current (CE). result showed that indigo could be reduced best recipe 20 g/L NaOH + 5 Fe 2 (SO 4 ) 3 30 TEA Calcium gluconate in 1 A·dm -2 density at 50°C. This work suggested -TEA an effective...

Abstract Particulate matter 2.5 (PM 2.5.) pollution is a serious threat to human health. In this paper, we firstly used electrospraying technology fabricate composite polytetrafluoroethylene (PTFE)/expanded graphite (EG) coated spun‐bond polypropylene (PP) microporous filters that show tremendous potential for its use as an effective PM 2.5. capture medium. The surface morphology, the area, surficial chemical structure, hydrophobicity, antifouling ability, mechanical property, air...

In this paper, copper deposited graphene was fabricated through electroless plating. A novel and facile pretreatment method is introduced based on ultrasonic treatment with nickel nano-particles as the catalytic core. This abandons sensitization activation process in traditional that reduces time economic cost dramatically. The static contact angle determined by an Olympus BX51M optical microscope. surface morphology plating composition were characterized via scanning electron microscope...

As the demand for innovative electronic devices continues to grow, flexible products which offer a solution capable of adapting various shapes and deformations, are increasingly gaining prominence. This study innovatively uses electrospun polyvinylidene fluoride (PVDF) nanofibers as substrates employs reactive inkjet printing (RIP) technology deposit instantaneously reduce graphene oxide (GO), fabricating ultralight all-solid-state supercapacitors. To verify that PVDF can facilitate uniform...

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