ENERGY & FUELS
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2024
·
IF 5.2
Yuxiang Chen,Chao Li,Lijun Zhang,Shu Zhang,Jun Xiang,Song Hu,Yi Wang,Mortaza Gholizadeh,Xun Hu
Pig manure is a typical solid waste, which features a high content of inorganics. These inorganics might be involved in thermochemical conversion of pig manure, and this was investigated herein by pyrolysis of pig manure leached with varied concentrations of H2SO4 (0.5–6 mol L–1) at 600 °C. The removal of acid-leachable inorganics [CaCO3, Ca3(PO4)2, alkaline oxides, etc.] exposed more acidic sites derived from the oxides, like SiO2. This enhanced production of the gases at the expense of bio-oil. Furthermore, aromatization and secondary condensation reactions were also promoted, increasing not only the yield of char (from 29.6 to 39.7%, on an organic basis) but also the carbon content in char from 16.1% (blank sample) to 26.2% (leached with 6 mol L–1 H2SO4). Leaching partial inorganics rendered more sufficient contact and interaction between the organics, facilitating charring of organic matter. This further retained more carbon skeleton for generation of more micropores, which further enhanced the capability of the resulting char for adsorption of phenol. In situ infrared analysis indicated the presence of more abundant oxygen-containing functionalities and carbonaceous species after the leaching treatment, favoring the occurrence of aromatization reactions.
研究领域:
环境科学
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能源转化
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产品关联
DOI
高影响因子
Atmospheric Pollution Research
·
2018
·
IF 2.152
Longchao Liang,Zhidong Xu,Guangle Qiu,Pan Wu,Ruixue Zhang
Arsenic (As) is considered a carcinogenic toxin, and nonferrous metal smelting activities can release significant quantities of As, causing an increase in As levels in the environment. A total of 221 samples of moss belonging to 5 species in 4 families were collected from the Wanshan District, the world third largest mercury mining area, in Guizhou Province, southwestern China, for analysis of total As (tAs) concentrations and As speciation. The results indicated that the tAs concentrations in these mosses ranged from 0.67 to 9.6 mg kg −1 , with an average of 2.4 ± 1.7 mg kg −1 . The dominant species of As in these mosses were inorganic forms of arsenite (As(III)) and arsenate (As(V)) with a total percentage of 87%, whereas the concentrations of organic forms (monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA)) were relatively low, with percentages of 11.8% and 6.0%, respectively. A significant correlation (r = 0.766, p < 0.01) was observed between As(V) and tAs. In the spatial distribution pattern of As, high concentrations of As in mosses were centralized around historical Hg retorting sites in the town of Wanshan, the villages of Gouxi and Yanwuping and sites downwind of these locations, suggesting that historical intensive Hg mining activities might be the most possible source of atmospheric As.
研究领域:
环境科学
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植物学
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生态毒理学
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DOI
高影响因子
Crystals
·
2021
·Vol. 12
·期 1
·19
·
IF 2.589
Dawei Luo,Jian Zhang,Yu Liang,Jianling Ni,Fangming Wang,Wei Liu
Here, organic-inorganic hybrid molecular compounds based on copper(I) bromide have been synthesized by slow-diffusion method. The inorganic modules of these two structures are Cu2Br42−anion, and the inorganic modules are coordinated to cationic organic ligands via Cu-N coordinative bonds. Both of these compounds are luminescent, emitting green emissions under UV excitation.Keywords:organic-inorganic hybrid;luminescence;copper bromide
研究领域:
材料科学
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化学
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DOI
高影响因子
PNAS Nexus
·
2023
·Vol. 2
·期 11
·
IF 0
Ge Qiuyue,Liu Yangyang,You Wenbo,Wang Wei,Li Kejian,Ruan Xuejun,Xie Lifang,Wang Tao,Zhang Liwu
The origin of life on Earth is an enigmatic and intricate conundrum that has yet to be comprehensively resolved despite recent significant developments within the discipline of archaeology and geology. Chemically, metal-sulfide minerals are speculated to serve as an important medium for giving birth in early life, while yet so far direct evidence to support the hypothesis for the highly efficient conversion of inorganic carbon into praxiological biomolecules remains scarce. In this work, we provide an initial indication that sphalerite, employed as a typical mineral, shows its enormous capability for promoting the conversion of inorganic carbon into elementary biomolecule formic acid (HCOOH) in airborne mineral-bearing aerosol microdroplet, which is over two orders of magnitude higher than that of the corresponding conventional bulk-like aqueous phase medium in the environment (e.g. river, lake, sea, etc.). This significant enhancement was further validated by a wide range of minerals and clays, including CuS, NiS, CoS, CdS, MnS, elemental sulfur, Arizona Test Dust, loess, nontronite, and montmorillonite. We reveal that the abundant interface of unique physical–chemical features instinct for aerosol or cloud microdroplets reduces the reaction energy barrier for the reaction, thus leading to extremely high HCOOH production (2.52 × 1014 kg year−1). This study unfolds unrecognized remarkable contributions of the considered scheme in the accumulation of prebiotic biomolecules in the ancient period of the Earth.
研究领域:
化学
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生物学
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地球科学
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DOI
PubMed
APPLIED PHYSICS LETTERS
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2021
·Vol. 118
·期 26
·
IF 3.791
Zheng Haihua,Zhou Zhongpo,Wang Ti,Gui Pengbin,Wu Hao,Liu Chang
Inorganic perovskites, such as CsPbX 3 (X = Cl, Br, I), have attracted attention due to their excellent thermal stabilities and high photoluminescence quantum efficiencies. Here, we report on all-inorganic light-emitting diodes (LEDs), including inorganic perovskite emitters (CsPbBr 3 ) based on the heterostructure of n-ZnO/Al 2 O 3 /CsPbBr 3 /p-GaN. The effects of the CsPbBr 3 and Al 2 O 3 interlayers on the electroluminescence performance have been systematically investigated. It is observed that the Al 2 O 3 interlayer plays an important role in determining the emission performance. By introducing the Al 2 O 3 layers, the electron–hole recombination can almost be limited within the perovskite. The emission peaks of the heterojunction LEDs change from blue-green to pure green with the increased luminous intensities and decreased leakage currents. It provides an idea for the preparation of all-inorganic perovskite LEDs.
研究领域:
材料科学
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光电子学
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DOI
高影响因子
Journal of Analysis and Testing
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2021
·Vol. 5
·期 1
·40-50
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IF 0
Tan Xiao-Hong,Huang Guo-Bin,Cai Zhi-Xiong,Li Fei-Ming,Zhou Yan-Mei,Zhang Mao-Sheng
The application of all-inorganic CsPbX 3 (X = Cl − , Br − and I − ) perovskite nanocrystals (PNCs) is hindered by their poor stability under different environments (moisture, UV light and high temperature). Herein, we demonstrate a novel in-situ growth and post-coating technique to prepare monodisperse spherical sandwiched structured SiO 2 @CsPbX 3 @SiO 2 perovskite composites. In this strategy, the environmental stability of CsPbX 3 PNCs is remarkably improved due to protecting evenly distribution in the surface of composites through the design of spherical sandwiched structure, and the negative effects of SiO 2 coating on photoluminescence property of CsPbX 3 PNCs could be reduced effectively. Furthermore, regular monodisperse spherical structure and uniform size of composites greatly benefit their application in relative fields. The experiment results indicate that the as-prepared product have outstanding abilities of water-, oxidation- and UV radiation resistance. Finally, the SiO 2 @CsPbBr 3 @SiO 2 perovskite composites are successfully used for highly sensitive detection of Fe 3+ in water sample. The results show limit of detection (LOD) is 3 µM and good linearity is between 10 and 70 µM ( R 2 = 0.9963). Furthermore, the proposed perovskite composites have been successfully applied for the analysis of Fe 3+ in real samples with satisfactory results.
研究领域:
材料科学
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分析化学
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DOI
MOLECULES
·
2021
·Vol. 26
·期 6
·1785
·
IF 4.412
Zhe Jiang,Nian Li,Pei-Ying Li,Bo Liu,Hua-Jie Lai,Tao Jin
Chitosan is a kind of biodegradable natural polysaccharide, and it is a very promising adsorber material for removing metal ions from aqueous solutions. In this study, chitosan-based magnetic adsorbent[email protected]3O4was synthesized by a one-step method using carboxymethyl chitosan (CMC) and ferric salts under relatively mild conditions. The Fe3O4microspheres were formed and the core–shell structure of[email protected]3O4was synthesized in the meantime, which was well characterized via SEM/TEM, XRD, VSM, FT-IR, thermo gravimetric analysis (TGA), XPS, size distribution, and zeta potential. The effects of initial arsenic concentration, pH, temperature, contact time, and ionic strength on adsorption quantity of inorganic arsenic was studied through batch adsorption experiments. The magnetic adsorbent[email protected]3O4displayed satisfactory adsorption performance for arsenic in water samples, up to 20.1 mg/g. The optimal conditions of the adsorption process were pH 3.0, 30−50 °C, and a reaction time of 15 min. The adsorption process can be well described by pseudo-second-order kinetic model, suggesting that chemisorption was main rate-controlling step. The Langmuir adsorption model provided much higher correlation coefficient than that of Freundlich adsorption model, indicating that the adsorption behavior is monolayer adsorption on the surface of the magnetic adsorbents. The above results have demonstrated that chitosan-based magnetic adsorbent[email protected]3O4is suitable for the removal of inorganic arsenic in water.Keywords:chitosan;adsorption;magnetic adsorbents;inorganic arsenic
研究领域:
环境科学
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材料科学
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水处理
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产品关联
DOI
PubMed
高影响因子
Nanomaterials
·
2019
·Vol. 9
·期 12
·1666
·
IF 4.034
Jien Yang,Qiong Zhang,Jinjin Xu,Hairui Liu,Ruiping Qin,Haifa Zhai,Songhua Chen,Mingjian Yuan
Despite the successful improvement in the power conversion efficiency (PCE) of perovskite solar cells (PSCs), the issue of instability is still a serious challenge for their commercial application. The issue of the PSCs mainly originates from the decomposition of the organic–inorganic hybrid perovskite materials, which will degrade upon humidity and suffer from the thermal environment. In addition, the charge transport layers also influence the stability of the whole devices. In this study, inorganic transport layers are utilized in an inverted structure of PSCs employing CsPbIBr2as light absorbent layer, in which nickel oxide (NiOx) and cerium oxide (CeOx) films are applied as the hole transport layer (HTL) and the electron transport layer (ETL), respectively. The inorganic transport layers are expected to protect the CsPbIBr2film from the contact of moisture and react with the metal electrode, thus preventing degradation. The PSC with all inorganic components, inorganic perovskite and inorganic transport layers demonstrates an initial PCE of 5.60% and retains 5.56% after 600 s in ambient air at maximum power point tracking.Keywords:inorganic perovskite;CsPbIBr2;metal oxide transport layers
研究领域:
材料科学
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能源技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Huan Zhao,Zhuo Xu,Yuhang Che,Yu Han,Shaomin Yang,Chenyang Duan,Jian Cui,Songyuan Dai,Zhike Liu,Shengzhong (Frank) Liu
All-inorganic CsPbI 2 Br is a promising candidate to produce the optimized balance between efficiency and stability. Unfortunately, the CsPbI 2 Br perovskite films prepared by solution methods often show numerous defects on the grain surfaces and a tendency for phase transition. In this work, we discovered that the proper amount of NiI 2 additive enables Ni 2+ doping in the perovskite interstitial lattice, while additional Ni 2+ ions serve as passivation agents on the grain surfaces; in particular, a profiled distribution appears from the film bulk to both the upper and lower surfaces. The special Ni 2+ distribution results in an optimized TiO 2 surface for perovskite growth, better perovskite film quality, superior charge extraction capability, and effective suppression of interfacial recombination. As a result, the CsPbI 2 Br perovskite solar cell (PSC) efficiency is increased to 15.88%, among the highest for its type. Also, the special Ni 2+ distribution endows the PSC with improved moisture tolerance. This work provides a promising strategy to overcome the surface/bulk instability issues common in PSCs.
研究领域:
材料科学
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能源科学
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光伏技术
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产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2022
·Vol. 24
·期 39
·6987-6995
·
IF 3.756
Shujie Dai,Yangchun Tan,Yuhan Yang,Longfeng Zhu,Baogang Liu,Yanyan Du,Xuebo Cao
Organotemplate-free synthesis of zeolites assisted with zeolite seeds has been a hot topic in the past decade. Herein, we for the first time show an organotemplate-free synthesis of Al-rich S-ZSM-35 and S-ZSM-22 zeolites with the addition of ZSM-57 zeolite seeds. Notably, the adjustment of SiO2/Al2O3 and Na2O/SiO2 ratios in the starting gel to suitable values is an important factor in preparing the pure Al-rich S-ZSM-35 (Si/Al ratio at about 5) and S-ZSM-22 (Si/Al ratio at about 20) zeolites. The key to success is that the targeted ZSM-35 and ZSM-22 zeolite products have partly the same composite building units as the ZSM-57 zeolite seeds. The obtained Al-rich S-ZSM-35 and S-ZSM-22 zeolites show good crystallinity, typical crystal morphology, large BET surface area, and fully 4-coordinated aluminum species. In addition, as a typical example, the Al-rich S-ZSM-22 zeolite was evaluated by n-dodecane hydroisomerization reaction, which exhibits outstanding performance due to its Al-rich features (Si/Al ratio at about 20) compared with the conventional ZSM-22 zeolite (Si/Al ratio at about 30).
研究领域:
材料科学
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催化化学
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DOI
高影响因子
Materia-Rio de Janeiro
·
2025
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IF 1.2
Yu Meng,Xu Guorui,Li Liang,Zhou Jingjing,Tie Leilei,Zhang Bo,Ma Xiaofei,Feng Xuan,Yang Jinzhou,Wang Lei,Li Weizhi,Zheng Yufei,Wu Bao
VISUAL
研究领域:
石油工程
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油田化学
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提高采收率
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油藏工程
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产品关联
DOI
高影响因子
Foods
·
2024
·Vol. 13
·期 17
·2741
·
IF 4.7
Di Zhao
Arsenic (As) contamination in rice is a global public health concern, particularly in Asian countries where rice is the staple food. Current health-based limits for As in rice are typically derived from total As concentrations, resulting in overly stringent values. This study aimed to determine As bioaccessibility in rice, estimate dietary intakes of inorganic As (iAs) at different consumption rates, evaluate the cancer and non-cancer risks associated with iAs exposure through rice consumption, and assess the feasibility of deriving more accurate health-based limits for As in rice after incorporating rice As bioaccessibility. Bioaccessibility of As ranged from 60.7% to 104.5% in rice samples. Estimated iAs intake varied from 0.04 to 1.40 μg/kg BW/day at rice consumption rates of 100–300 g/day. Incorporating rice As bioaccessibility resulted in lower iAs intake estimates of 0.03–1.18 μg/kg BW/day. The non-cancer and cancer risks associated with iAs exposure are concerning for populations with higher rice consumption rates and elevated rice iAs concentrations. Health-based limits for iAs in rice for different regions across China are discussed after incorporating rice As bioaccessibility. This study contributes to the development of regional or national safety limits for As in rice, based on As bioaccessibility in rice.
研究领域:
环境科学
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公共卫生
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毒理学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）