Journal of Cleaner Production
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2021
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IF 9.297
Zijie Wang,Yannan Jia,Weikun Song,Xiaoqin Li,Kai Xu,Zheng Wang
The removal of boron in desalinated seawater has always been one of the keys to restrict the use of desalinated seawater. For this reason, a composite adsorbent named UiO-66-NH 2 /GO was successfully prepared by a simple solvothermal method through this research. It is composed of graphene oxide and water-stable metal organic framework UiO-66-NH 2 , and for the first time as a boron adsorbent for the treatment of desalinated seawater. Various technologies were applied to systematically analyze the stability, structure, topography and chemical characteristics of the composite adsorbent. The relationship between the influencing factors and the adsorption effect was investigated, including the amount of adsorbent, contact time, initial concentration of boron, and pH of the boron solution. It is proved that the boron adsorption complies the pseudo-second-order kinetic model , the intra-particle diffusion model and the Langmuir isotherm model through the fitting of experimental results. The adsorption of boron by UiO-66-NH 2 /GO has both physical and chemical adsorption , including electrostatic attraction , covalent bond or electron transfer . The results of thermodynamic study pointed out the adsorption of boron is spontaneous and feasible. The response surface method was designed to improve the adsorption conditions of boron. The optimized adsorption conditions to reach 26.45 mg/g of boron adsorption were found to be at dosage of 75.03 mg/g with pH of 5 and temperature of 321.19 k. UiO-66-NH 2 /GO showed good removal ability for low concentration boron and good reusability . The above suggest that UiO-66-NH 2 /GO has the potential to be applied to desalinated seawater treatment.
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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化学工程
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产品关联
DOI
高影响因子
Materials
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2023
·Vol. 16
·期 2
·684
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IF 3.4
Yunxin Yang,Cong Wang,Hua Zhang,Jiancai Qian,Song Yang,Huiyun Liao,Xuehui Sun,Yipeng Wang,Peijian Sun,Yunzhen Jia,Junwei Guo,Huaiyuan Zhu,Cong Nie
Removal of 1,3-butadiene from cigarette smoke plays an important role in human health and environmental protection. Herein, a series of UiO-66 X% containing different ratios of the -NH2group was synthesized via the solvothermal method by using terephthalic acid (H2BDC) and 2-aminoterephthalic acid (NH2-BDC) as ligands. Using GO as support, a series of UiO-66-NH2/GO Y% were prepared by controlling the ratio of UiO-66-NH2and GO. The effects of -NH2and GO contents on the structure and composition of MOFs were investigated. Finally, the different -NH2contents of UiO-66 X% and the different GO contents of UiO-66-NH2/GO Y% were applied in 1,3-butadiene removal from cigarette smoke. The results showed that UiO-66 X% with the higher contents of -NH2showed a higher rate of 1,3-butadiene removal, and UiO-66-NH2/GO Y% with the GO contents of 5% showed the highest removal rate of about 33.85%, which was 25.54% higher than that of activated carbon. In addition, the saturation capacity of the adsorbent materials for 1,3-butadiene was as high as 210.01–239.54 mg/g, showing great potential in reducing harmful components in cigarette smoke and environmental protection.Keywords:UiO-66;UiO-66-NH2/GO;1,3-butadiene removal;cigarette smoke
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2024
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IF 3.7
Zhaoli Wang,Wenjing Li,Yi Zhang,Yanyin Cheng,Junjian Yu,Tianming Dong,Xiaoyu Chi,Di Liu,Zhe Wang
ABSTRACT Achieving high fouling resistance and permeability using membrane separation technology in water treatment processes remains a challenge. In this work, a novel mixed-matrix membrane (MMM) (poly(arylene ether ketone) [PAEK]-containing carboxyl groups [PAEK-COOH]/UiO-66-NH 2 @graphene oxide [GO]) with superb fouling resistance and high permeability was prepared by the nonsolvent-induced phase separation method, by in-situ growth of UiO-66-NH 2 on the GO layer, and by preparing hydrophilic PAEK-COOH. On the basis of the structure and performance analysis of the MMM, the maximum water flux reached 591.25 L·m −2 ·h −1 for PAEK-COOH/UiO-66-NH 2 @GO, whereas the retention rate for bovine serum albumin increased from 85.40% to 94.87%. As the loading gradually increased, the hydrophilicity of the MMMs increased, significantly enhancing their fouling resistance. The strongest anti-fouling ability observed was 94.74%, which was 2.02 times greater than that of the pure membrane. At the same time, the MMMs contained internal amide and hydrogen bonds during the preparation process, forming a cross-linked structure, which further enhanced the mechanical strength and chemical stability. In summary, the MMMs with high retention rate, strong permeability, and anti-fouling ability were successfully prepared.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2018
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IF 3.927
Mingmin Jia,Yi Feng,Jianhao Qiu,Xiong-Fei Zhang,Jianfeng Yao
UiO-66-NH 2 @GO nanoparticles were synthesized by growing UiO-66-NH 2 on graphene oxide (GO) nanosheets. The obtained nanoparticles were incorporated in polyimide (PI) matrix to improve the CO 2 separation performance. The crystalline structure, interaction between UiO-66-NH 2 and GO and the dispersion of UiO-66-NH 2 @GO were characterized by various techniques. Owning to the interaction between UiO-66-NH 2 and GO, UiO-66-NH 2 nanocrystals were well-anchored on GO sheets and the size was tailored. Also, it can be found that the high-aspect GO nanosheets in polymer matrix improved the dispersion of UiO-66-NH 2 nanoparticles. The high porosity of UiO-66-NH 2 @GO and inherent adsorption property to CO 2 significantly enhanced the gas separation performance of composite membranes compared to pristine PI membrane. The developed UN@GO-PI mixed matrix membrane with 5 wt% of UiO-66-NH 2 @GO loading showed excellent and stable CO 2 /N 2 separation performance with the CO 2 permeability of 7.28 Barrer and the CO 2 /N 2 selectivity of 52.
研究领域:
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）