Custard apple (Annona squamosa) is an endemic plant that has been broadly utilized in traditional pharmacological activities. The green synthesis of nanoparticles is a cost-effective and environment-friendly approach that needs to be explored more. In this study, Ag and Chi-Ag nanoparticles were fabricated using A. squamosa plant. This biogenic nanomaterial showed strong antibacterial activity against several bacterial pathogens.
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Piyush Kumar Gupta1, D. Karthik Kumar2, M. Thaveena3, Soumya Pandit1, Somya Sinha4, R. Ranjithkumar2,* , Walaa F. Alsanie5, Vijay Kumar Thakur6,7,8,*
Journal of Renewable Materials, Vol.10, No.12, pp. 3093-3105, 2022, DOI:10.32604/jrm.2022.019335
Abstract Custard apple is a dry land fruit. Its leaves exhibit different pharmacological activities. In the present study, both
silver (Ag) nanoparticles and chitosan-coated Ag (Chi-Ag) nanoparticles were fabricated using the aqueous leaf
extract of the custard apple plant. During preliminary phytochemical analysis, various types of phytocompounds
were found in the aqueous leaf extract of the same plant. Next, both nanoparticles were physiochemically characterized. FTIR analysis exhibited the fingerprint vibrational peaks of active bioactive compounds in plant extract,
Ag nanoparticles, and Chi-Ag nanoparticles. UV/Visible spectral analysis revealed the highest absorbance peak at
419 nm, indicating the presence of Ag nanoparticles. XRD… More >
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Lujiang Xu, Geliang Xie, Xianjun Zhou, Yucheng Liu, Zhen Fang*
Journal of Renewable Materials, Vol.10, No.12, pp. 3107-3118, 2022, DOI:10.32604/jrm.2022.020691
Abstract In this paper, CaO/bio-char was synthesized by directly co-pyrolysis of Ca(OH)2 and rice straw, and used as catalyst to catalytic pyrolysis of soybean oil to produce high quality biofuel. In this co-pyrolysis process, CaO particles has been successfully embedded on the bio-char surface. During the catalytic pyrolysis process, CaO/bio-char showed a good catalytic performance on the deoxygenation of soybean oil. Pyrolysis temperature affected the pyrolysis reactions and pyrolytic products distributions dramatically, higher pyrolysis temperature lead to seriously cracking reactions, lower bio-oil yield and higher gases yield, and lower pyrolysis temperature lead to higher bio-oil yield with higher oxygenated compounds content… More >
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Yongming Chen1,2,#, Shuai Huang1,#, Han Zhao1, Ru Yang2, Yining He1, Tianyu Zhao1, Yunlong Zhang1, Qinghong Kong1,*, Shasha Sun3,*, Junhao Zhang3
Journal of Renewable Materials, Vol.10, No.12, pp. 3119-3130, 2022, DOI:10.32604/jrm.2022.019576
（This article belongs to this Special Issue: Bio-based Halogen-free Flame Retardant Polymeric Materials)
Abstract To enhance the thermal stability and flame retardancy of epoxy resin (EP), beta-cyclodextrin (β-CD) is successfully introduced into the layered tin phenylphosphonate (SnPP), which is incorporated into EP matrix for preparing EP/β-CD@SnPP composites. The results indicate that the addition of β-CD@SnPP obviously improve
the thermal stability and residual yield of EP composites at higher temperature. When the amount of β-CD@SnPP
is only 4 wt%, EP/4β-CD@SnPP composites pass V-1 rating, and LOI value is up to 30.8%. Meanwhile, β-
CD@SnPP effectively suppress the heat release and reduce the smoke production of EP/β-CD@SnPP composites
in combustion, and the peak heat release rate… More >
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Xuesong Wang1,#, Zhihong Wang1,2,#, Qiuling Yang1, Sheng Peng3, Mijun Peng1,*
Journal of Renewable Materials, Vol.10, No.12, pp. 3131-3145, 2022, DOI:10.32604/jrm.2022.020204
（This article belongs to this Special Issue: Renewable Biomass as a Platform for Preparing Green Chemistry)
Abstract To evaluate the potential anti-aging ability of Eucommia ulmoides, four characteristic components (chlorogenic
acid, geniposidic acid, aucubin, quercetin) were selected to assess their effects on H2O2-induced oxidative damage
model of human umbilical vein endothelial cell (HUVEC). Oxidative damage indexes, inflammatory factors, cell
cycle, cell apoptosis, cell senescence, and their related proteins were analyzed by methyl thiazolyl tetrazolium
(MTT) assay, enzyme-linked immunosorbent assay (ELISA), propidium iodide (PI) staining, annexin V-FITC/
PI double staining, SA β-galactosidase staining, and western blotting (WB). The results showed that H2O2-
induced cell growth inhibition rate decreased as supplementation with characteristic components when compared
to H2O2 group.… More >
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Hua Jing1, Shiyao Lu1, Lili Ji1,*, Shijie Li1, Baikang Zhu2, Jian Guo3, Jiaxing Sun1, Lu Cai4, Yaning Wang1
Journal of Renewable Materials, Vol.10, No.12, pp. 3147-3165, 2022, DOI:10.32604/jrm.2022.020215
（This article belongs to this Special Issue: Biochar Based Materials for a Green Future)
Abstract In this study, the magnetic wakame biochar/Ni composites were prepared with three activating reagents of
H3PO4, ZnCl2 and KOH by one-step pyrolysis activation, characterized by BET, SEM, TEM, FI-IR, XRD, Raman,
and elemental analyzer, and their adsorption performance for diesel were also analyzed. The results showed that
wakame biochar/Ni composites had larger specific surface area, abundant porous structure, and various reactive
groups, rendering its enhancement of adsorption efficiency. The adsorption experiments indicated that the maximum adsorption capacities for diesel using WBPA 0.5, WBHZ 0.5 and WBPH 0.5 were 4.11, 8.83, and 13.47 g/g,
respectively. The Langmuir model was more suitable… More >
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Jianan Wu1, Ke Xue2, Zhaowei Ding3, Lei Lang3, Kang Gu3, Xiaolin Li4, Mingli Zhang5, Desheng Li3,6,*
Journal of Renewable Materials, Vol.10, No.12, pp. 3167-3183, 2022, DOI:10.32604/jrm.2022.020265
Abstract Thermal insulation is an important indicator to evaluate the construction material in cold region engineering. As
we know, adding the industrial waste as lightweight aggregate or creating the pore inside the cement-based composite could make the texture loose, and the thermal insulating capacity of the material would be improved with
this texture. Using these methods, the industrial by-product and engineering waste could be cycled in an efficient
way. Moreover, after service the fragmented cement composites paste could be used as aggregate in the thermal
insulating concrete again. While the porous texture is not favorable for the mechanical strength and long-term… More >
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Qian Zhou1, Yueyue Zhang1, Juanhong Liu1,2,3,*, Aixiang Wu1,2, Hongjiang Wang1,2
Journal of Renewable Materials, Vol.10, No.12, pp. 3185-3199, 2022, DOI:10.32604/jrm.2022.020316
（This article belongs to this Special Issue: Circular Economy in the Development of Eco-Friendly Materials for Construction)
Abstract To improve the economic and social benefits of mining and backfill, it is necessary to find the backfill materials
suitable for mineral mining, improve the various properties of the filling materials, and develop low cost, high
performance new filling materials. Portland cement is neither environmentally friendly nor economical. Currently, we have begun to study and apply some industrial waste, such as slag, fly ash, and other solid wastes, with
certain activities as the primary component of cementing material that will not only meet the technical requirements of filling, but also comprehensively utilize industrial waste and possess a benign, sustainable lifecycle… More >
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Muzi Liao1,2,#, Hui Tong1,2,#, Xiangya Huang1,2, Fang Liu3, Jingwei He3,*, Sui Mai1,2,*
Journal of Renewable Materials, Vol.10, No.12, pp. 3201-3215, 2022, DOI:10.32604/jrm.2022.022090
（This article belongs to this Special Issue: Restorative and Regenerative Materials in Biomedical Applications)
Abstract Novel branched silicone methacrylate was developed. The mechanical and biological properties of the resin system were investigated to select the formula proportion with the best overall performance. The novel silicone-containing monomers were combined with an incremental sequence of glass filler concentrations in commonly used
Bis-GMA/TEGDMA (50/50, wt./wt.) dental resin systems. Physicochemical properties, surface properties, antibacterial adhesion effect, anti-biofilm effect, protein adsorption, and cytotoxicity were evaluated. The results
showed that BSMs did not affect the double bond conversion of dental resin, but could reduce volumetric shrinkage (p < 0.05). The BSM containing resins can resist protein and bacteria adhesion (S. Mutans)… More >
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Elham Azadeh1, Xinyi Chen2, Antonio Pizzi2,*, Christine Gérardin1, Philip Gérardin1, Hisham Essawy3
Journal of Renewable Materials, Vol.10, No.12, pp. 3217-3227, 2022, DOI:10.32604/jrm.2022.022740
（This article belongs to this Special Issue: Renewable Foam Materials and Composites)
Abstract Non-isocyanate polyurethane (NIPU) foams using a hydrolysable tannin, also vulgarly called tannic acid, namely here commercial chestnut wood tannin extract was prepared. Compression strength did not appear to depend on the foam apparent density while the formulation composition of the NIPU foams has been shown to be more determinant. These NIPU foams appeared to be self-extinguishing once the high temperature flame is removed. The ignition time gave encouraging results but for improved fire resistance the foams may need some fire-retardant addition. FTIR spectrometry showed the formation of non-isocyanate urethane linkages. Thermogravimetric analysis indicated a good thermal resistance of these foams,… More >
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ARTICLE
Shuangyan Zhang*, Shun Yang, Chuangui Wang, Weiyi Su, Huangfei Lv, Yuanyuan Li
Journal of Renewable Materials, Vol.10, No.12, pp. 3229-3241, 2022, DOI:10.32604/jrm.2022.020489
Abstract Bamboo harvesting residues are wastes by-products of bamboo industries that contain holocellulose for about
63.14% to 70.71%, which often be discarded, incinerated or buried. In this study, carboxymethyl cellulose was
prepared from bamboo harvesting residues (bamboo-branch and bamboo-tip) as raw materials. The chemical
composition of bamboo harvesting residues, the viscosity and degree of substitution of carboxymethyl cellulose
were determined. Carboxymethyl cellulose obtained was further characterized and compared by means of FTIR,
SEM, XRD and TG. Results showed that under the optimized identical conditions, the viscosity and degree of
substitution of carboxymethyl cellulose from bamboo-branch and bamboo-tip were 6.0 and 78.9… More >
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