JOURNAL OF LUMINESCENCE
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2022
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IF 4.171
Yi Zhang,Cuiping Zhou,Qifeng Zhang,Pengfei Yin,Xiyuan Sun,Kaiming Wang,Jian Wang,Xing Feng
In this paper, a synthesized material change from perovskite-layer-structured La 2 Ti 2 O 7 to perovskite type LaTiO 3 induced by Li 2 CO 3 addition was observed. The [TiO 6 ] octahedral site symmetry and particle uniformity showed an obvious variation with the change from La 2 Ti 2 O 7 to LaTiO 3 . A broadband far-red emission from 670 to 780 nm emerged when Mn 4+ , Li + ions were co-doped. Furthermore, (Mn 4+ , Li + ) co-doped LaTiO 3 phosphor can be effectively excited by near-UV and blue lights, which is suitable for combining with commercial InGaN LED chips. The LaTiO 3 :0.4%Mn 4+ , 150%Li + phosphor exhibited a high quantum efficiency of 71.1% and a good thermal stability with emission intensity retained 65% at 423 K. Finally, a LED device was fabricated with the LaTiO 3 :0.4%Mn 4+ , 150%Li + phosphor, which matches well with the absorption of photochrome of P FR and shows a good potential for use in agricultural cultivation fields.
研究领域:
材料科学
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农业科学
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产品关联
DOI
高影响因子
MOLECULES
·
2022
·Vol. 27
·期 23
·8437
·
IF 4.927
Rongfei Lu,Jianwei Xu,Zhen Wang,Shaoyong Zhang,Hailong Wang,Hui Xu,Min Lv
Due to the extensive use of agrochemicals resulting in the emergence of pesticide resistance and ecological environment problems, the research and development of new alternatives for crop protection is highly desirable. In order to discover potent natural product-based insecticide candidates, a series of new cholesterol ester derivatives containing cinnamic acid-like fragments at the C-7 position were synthesized. Some derivatives showed potent pesticidal activities. AgainstMythimna separataWalker, compounds2a,Id,Ig, andIIgshowed 2.1–2.4-fold growth-inhibitory activity of the precursor cholesterol. AgainstPlutella xylostellaLinnaeus, compoundsIg,IIf, andIIiexhibited 1.9–2.1-fold insecticidal activity of cholesterol. These results will pave the way for the future synthesis of cholesterol-based derivatives as agrochemicals.Keywords:cholesterol;cinnamic acid;structural modification;agricultural activity
研究领域:
植物保护
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有机化学
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产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Cong Jiang,Jiaming Wu,Hong Wang,Yehan Tao,Jie Lu,Jinwen Hu,Jian Du,Haisong Wang
Biodegradable cellulosic mulch has been demonstrated as the promising alternative to traditional plastic mulch film in agriculture, whereas the highly hydrophilic property and poor wet strength severely restricted their practical application. Herein, a new waterproof dialdehyde cellulose (OR)-polyamide epichlorohydrin (P)-alkyl ketene dimer (A) (OR-P-A) was carefully designed as the green mulch film. The hydrogen bonds and Schiff base reaction between -CHO on dialdehyde cellulose fibers and -NH 2 on PAE reinforced the interfacial interaction of cellulosic fibers. Furthermore, the formed β -keto ester bonds of -OH on cellulose with AKD improved the water resistance of paper fiber. Compared with the pristine cellulose film, the dry and wet tensile strength of OR-P-A 2 were increased to 17 MPa and 3 MPa, respectively. Moreover, the water contact angle was increased from 25° for pristine cellulose film to 124° for OR-P-A 2 . In addition, the germination rate of cabbage seeds covered by OR-P-A 2 was similar to that of commercial polyethylene film in practical application. This strategy proposed a novel method to improve the hydrophobicity of cellulose film, which boosting the development of biodegradable mulch film and “green” agriculture.
研究领域:
材料科学
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农业科学
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产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 11
·2950
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IF 5.076
Weinan Xing,Qi Liu,Jingyi Wang,Siye Xia,Li Ma,Ran Lu,Yujing Zhang,Yudong Huang,Guangyu Wu
Recently, biomass-based materials have attracted increasing attention because of their advantages of low cost, environment-friendly and nonpollution. Herein, the feasibility of using corn stalk biomass fiber (CF) and Fe3O4embedded chitosan (CS) as a novel biomass-based adsorbent (CFS) to remove chloramphenicol (CAPC) from aqueous solution. Structure of CFS was characterized by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM) and zeta potential techniques. The effects of solution pH, adsorption time and ion strength on the adsorption capacity were examined. Adsorption isotherms obtained from batch experiments were better fitted by Langmuir model compared with Freundlich model, Dubinin–Radushkevich model and Temkin model. Adsorption kinetic data matched well to the pseudo-second order kinetic model. CAPC adsorption was endothermic, spontaneous, and entropy-increasing nature on CFS. In addition, the CFS could be separated by an external magnetic field, recycled, and reused without any significant loss in the adsorption capacity of CAPC. Based on these excellent performances, there is potential that CFS can be considered as a proficient and economically suitable material for the CAPC removal from the water environment.Keywords:biomass;agricultural waste;chloramphenicol removal;adsorption
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Polymers
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2022
·Vol. 14
·期 21
·4579
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IF 4.967
Yi Huang,Yucheng Wu,Hao Tao,Bihe Yuan
Increasing contamination risk from oil/organic liquid leakage creates strong demand for the development of absorbents with excellent hydrophobicity and absorption capacity. Herein, bagasse was carbonized to form porous char with a special structure of array-style and vertically perforated channels, and then the activation process enlarged the pore volume of the char. With the cooperation of low-surface-energy polydimethylsiloxane and diatomaceous earth particles, the modified activated carbon aerogel (MACA) was fabricated by modifying the surface coating and mastoid structure on the bagasse char. Moreover, the MACA demonstrates high porosity oil-water separation, hydrophobicity, and considerable absorption capacity (4.06–12.31g/g) for gasoline and various organic solvents. This work converts agricultural waste into an efficient porous adsorbent, offering a scalable and commercially feasible solution to solving the leakages of oil/organic solvents.Keywords:porous materials;oil absorption;hydrophobic modification;agricultural residue
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2014
·Vol. 22
·期 7
·5563-5571
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IF 2.757
Li Yu-jiao,Hu Peng-jie,Zhao Jie,Dong Chang-xun
Composite washing of cadmium (Cd)- and lead (Pb)-contaminated agricultural soil from Hunan province in China using mixtures of chlorides (FeCl 3 , CaCl 2 ) and citric acid (CA) was investigated. The concentrations of composite washing agents for metal removal were optimized. Sequential extraction was conducted to study the changes in metal fractions after soil washing. The removal of two metals at optimum concentration was reached. Using FeCl 3 mixed with CA, 44 % of Cd and 23 % of Pb were removed, and 49 and 32 % by CaCl 2 mixed with CA, respectively. The mechanism of composite washing was postulated. A mixture of chlorides and CA enhanced metal extraction from soil through the formation of metal–chloride and metal–citrate complexes. CA in extract solutions promoted the formation of metal–chloride complexes and reduced the solution pH. Composite washing reduced Cd and Pb in Fe–Mn oxide forms significantly. Chlorides and CA exerted a synergistic effect on metal extraction during composite washing.
研究领域:
环境科学
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土壤修复
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产品关联
DOI
PubMed
高影响因子
Sustainability
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2022
·Vol. 14
·期 5
·2614
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IF 3.889
Jieming Zhu,Chen Chen,Lie You
Serious farmland scarcities make smallholders a default mode for China’s agriculture, which makes efficient and equitable rural development a great challenge. Tensions lead to alternation between autonomous family farming and coordinated collective agriculture. Rapid urbanization since the 1980s has strongly stimulated flower-growing and agribusiness in Yunnan, China. The organization for commercial flower-farming is, however, an issue. Officially promoted for collective farming, voluntary cooperatives are wrecked by the free-riding problem. Grower associations nevertheless spontaneously emerge, with the flexible entry and exit of members without binding joint-assets and joint-ownership, which is facilitated by technological changes to the transaction. Empirical investigation in Tonghai, Yunnan, unveiled the institution of agribusiness–smallholder partnership for inclusive rural development. Smallholders have actively participated in flower agriculture, which has contributed significantly to the development of rural economies. The high casualty of micro-smallholders suggests that farm size is an important and crucial factor for sustainable farming. Effective rural development has to be supported by endogenous non-agricultural jobs so that farm size can be increased.
研究领域:
农业经济学
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社会学
✓ 已验证
DOI
高影响因子
Agriculture-Basel
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2025
·Vol. 15
·期 11
·1177
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IF 3.6
Tao Xue,Yi Li,Zimo Chen,Chao Kong,Biyun Feng,Changyin Zhu,Yinlong Zhang,Jianming Xue,Hu Cheng
To ensure agricultural safety and ecological security, it is crucial to effectively immobilize emerging organic pollutants, such as plasticizers, to prevent their migration in various environmental matrices. However, the ideal immobilization agent with the advantages of being environmentally friendly is very rare. In this study, low-cost and stable near-natural immobilization agents, char-derived artificial humic acids, CHAs, were proposed and prepared via hydrothermal humification (180 °C) and pyrolysis (300, 500, or 700 °C) of agroforestry biowaste. The resulting CHAs exhibit high purity (composed primarily of C (67.28–81.35%), O (6.65–21.64%), H (1.40–5.28%), and N (0.36–0.58%)) with remarkably low ash content (5.43–10.02%). Characterization revealed a compact structure with a limited porosity with small surface area (0.27–0.32 m2g−1) and pore volume (2.99–3.43 × 10−4cm3g−1). Notably, high-temperature pyrolysis induced consumption of oxygen-containing functional groups while promoting aromatic structure formation. The sorption behavior of diethyl phthalate, a representative plasticizer, on CHAs was well described by both Langmuir isotherm and pseudo-second-order kinetic models. The CHAs exhibited remarkable sorption performance for diethyl phthalate, with a maximum sorption capacity reaching 3345 mg kg−1as determined by the Langmuir model. The sorption of diethyl phthalate onto CHAs is mainly multi-layer sorption dominated by physical processes, mainly including pore filling, partitioning, hydrogen bonding, and π–π stacking. Mean sorption energies ranging from 2.56 to 4.99 × 10−3kJ mol−1indicate the predominance of physical sorption mechanisms. This study developed a method to convert the liquid by-product produced during hydrothermal humification of biowaste into stable near-natural and carbon-rich char materials, and the proposed materials show great promise in immobilizing pollutants from various environmental matrices.
研究领域:
环境科学
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农业科学
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材料科学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Qian Xiang,Wei Geng,Xiaoqi Guo,Yongjie Liu,Sunan Liu,Xiaojuan Jin,Yajuan Chang,Tongze Lin,Ling Zhu,Yunsu Ma
Glyphosate (Gly) is one of the most widely used herbicides globally. It is essential to conduct quantitative monitoring of Gly in the environment to avoid unnecessary exposure. In this study, we present the development of a novel ratiometric fluorescent probe based on blue carbon dots (bCDs) and red quantum dots (rQDs) for the sensitive and selective detection of Gly in agricultural products. The fluorescence of rQDs is rapidly quenched upon interaction with Gly by intramolecular charge transfer (ICT), serving as the detection signal, while the fluorescence of bCDs remains constant, acting as an internal reference. By measuring the ratio of the fluorescence intensities of bCDs and rQDs ( I 440 / I 640 ), quantitative detection of Gly was achieved. The probe demonstrated a detection limit (LOD) as low as 0.11 μM, with a strong linear response over a concentration range of 0.5 to 200 μM. The developed method was successfully applied to detect Gly residues in real agricultural products (potatoes, gingers and apples), yielding satisfactory recovery rates and demonstrating high resistance to interference from other compounds. This study provides a reliable, efficient, and practical tool for environmental monitoring and food safety assessments.
研究领域:
环境科学
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食品安全
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分析化学
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产品关联
DOI
高影响因子
Particuology
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2022
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IF 3.251
Jinbo Ouyang,Jian Chen,Wenqian Chen,Limin Zhou,Di Cai,Cong Ren
Biochars were prepared by the pyrolysis of various H 3 PO 4 activated agricultural biomasses at 600 °C and subsequently used as adsorbents for the removal of ciprofloxacin (CIP) from aqueous solution. Peanut shell-based biochar (PSBC), corncob-based biochar (CCBC) and cotton-based biochar (CTBC) had high surface areas (571.0–1006.3 m 2 /g), well-developed pore structures (mesopores with large pore volumes) and available adsorption functional groups (C=C, C–N and C–O–C). The CIP adsorption onto the biochars was investigated by batch experiments (kinetics, isotherms, thermodynamics, pH, etc.). Thermodynamics calculations showed the spontaneous (Δ G θ <0) and endothermic (Δ H θ >0) nature of the mechanism. In particular, CCBC exhibited high adsorption capacity (120.6 mg/g) of CIP in real lake water and it also had significant removal efficiency of other common pharmaceutical contaminants from real lake environment, and even in a coexisting quintuple system. Finally, multiple interaction mechanisms of CIP adsorption onto aromatized biochar were explored combining characterization analysis and theoretical calculations. Elucidation of the mechanism of CIP adsorption onto biochar provides new insights into the assessment of the removal of pharmaceuticals from the aqueous environment.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2023
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IF 9.8
Wangjing Zhai,Wenqi Jiang,Qiqi Guo,Zhixuan Wang,Donghui Liu,Zhiqiang Zhou,Peng Wang
Due to sewage irrigation, manure fertilizer application or other agricultural activities, antibiotics have been introduced into farmland as an emerging contaminant , existing with other agrochemicals . However, the potential influences of antibiotics on the efficiency of agrochemicals and crops health are still unclear. In this work, the effect of antibiotics on fertilization efficiency and pea yield was evaluated, and the mechanism was explored in view of soil microbiome. Nitrogen utilization and pea yield were decreased by antibiotics. In specific, the weight of seeds decreased 9.5 % by 5 mg/kg antibiotics and decreased 25.1 % by 50 mg/kg antibiotics. For N nutrient in pea, antibiotics resulted in 62.5 %–63.7 % decrease in amino acid content and 8.3 %–35.3 % decrease in inorganic-N content. Further research showed that antibiotics interfered with N cycle in soil, inhibiting urea decomposition and denitrification process by reducing function genes ure C, nir K and nor B in soil, thus decreasing N availability. Meanwhile, antibiotics destroyed the enzyme function in N assimilation. This work evaluated the environmental risk of antibiotics from fertilization efficiency and N utilization in crop. Antibiotics could not only affect N cycle, limiting the decomposition of N fertilizer, but also affect N utilization in plants, thus affecting the yield and even the quality of leguminous crops.
研究领域:
农业
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环境科学
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微生物学
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植物科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
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IF 13.3
Meng Bai,Yahui Hou,Gang Li,Jing Fang,Xingjiang Wu,Yingtang Zhou,Junjie Qi,Zhensheng Yang,Hao Li
Seventy percent of global freshwater resources are consumed by agriculture, leading to severe water shortages due to the increasing demand for water in irrigated agriculture, which in turn poses a significant threat to food security. To address this challenge, innovative solutions are needed to optimize water use in agriculture. In this study, sodium lignosulfonate/chitosan/calcium chloride amphiphilic collection hydrogel (CSL-CaCl 2 ) is prepared. This hydrogel captures water from the atmosphere for soil water harvesting, thereby reducing the requirement for irrigation water. The hydrogel captures moisture from the air through its salt and porous structures, transferring it to a polymer network for storage. When exposed to daylight, the water-absorbed hydrogel is able to quickly release water into the soil, increasing the soil water content. The amount of water released from the hydrogel is 0.81 kg∙m −2 , equivalent to increasing the average annual precipitation in the temperate monsoon climate zone ( i.e. , Tianjin, China) by 51 %, which could effectively reduce the demand for agricultural irrigation water. The hydrogel not only promotes plant growth, but also has excellent water retention, improved soil physicochemical properties and exhibits excellent degradability. This work provides important insights for alleviating water shortages in irrigated agriculture.
研究领域:
农业科学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）