Enhanced adsorption selectivity of bisphenol analogues by tuning the functional groups of covalent organic frameworks (COFs)

化学 吸附 选择性 双酚A 双酚 功能群 共价键 化学工程 有机化学 组合化学 环氧树脂 催化作用 聚合物 工程类
作者
Yue Zhao,Chenghong Feng,Chenhao Tian,Zhenling Li,Yang Yu
出处
期刊:Separation and Purification Technology [Elsevier]
卷期号:297: 121489-121489 被引量:41
标识
DOI:10.1016/j.seppur.2022.121489
摘要

• Tuning functional groups, not the physical structure, changes BPs adsorption on COFs. • A higher adsorption capacity and selectivity for BPF was observed on TpBD(NH 2 ) 2 . • The adsorption of TpBD(NH 2 ) 2 was affected by electrostatic interactions. • TpBD(NO 2 ) 2 with hydrophobic interactions has conspicuous selectivity for BPC. • Hydrogen bonds are a critical factor affecting BPs adsorption on COFs. Bisphenol analogues (BPs) are widely used as plasticizers and can be released during the aging and degradation of microplastics. Their persistence in water can cause serious harm to the ecosystem and human health. To improve the capture ability of COFs toward these estrogen-like toxins from water, amino group-functionalized COFs (COFs-TpBD(NH 2 ) 2 ) were constructed from nitro group COFs (COFs-TpBD(NO 2 ) 2 ) via the reduction of nitro to amino groups, and the adsorption behaviors for the five BPs (BPA, BPF, BPC, BPS and 4-CP) were compared. The focus was laid on the role of functional-group-tuning in the changes of adsorption capacity, selectivity and mechanisms of the COFs absorbents. The results showed that TpBD(NH 2 ) 2 has a higher adsorption capacity and better adsorption selectivity for most BPs than TpBD(NO 2 ) 2 . COFs with nitro and amino groups show the best adsorption selectivity for BPC (K F = 6.71 min −1 ) and BPF (K F = 9.49 min −1 ), respectively. Chemisorption dominates the adsorption of the two COFs, and internal particle diffusion is the rate-determining step. The adsorption behavior difference between the two COFs was ascribed to the successful conversion of functional groups of the COFs from nitro to amino groups, which was proven by FT-IR, SEM, PXRD, and BET characterization results. Adsorption of BPA, BPC and BPF by TpBD(NO 2 ) 2 is positively related to hydrophobic interactions (represented by log K ow ), but the adsorption mechanism of TpBD(NH 2 ) 2 was mainly attributed to the electrostatic interaction, as evidenced by the zeta potential and pKa. Hydrogen bonds were proven to be a critical factor that affects the adsorption of BPS and 4-CP by COFs. This study on the appropriate selection of COFs functional groups can provide insight into the future design of adsorbents and the prevention of BPs pollution release from microplastics.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
juju发布了新的文献求助10
刚刚
研友_5X7BZ5发布了新的文献求助30
刚刚
卡机了完成签到,获得积分10
刚刚
freezing发布了新的文献求助10
2秒前
科目三应助Hahawang采纳,获得10
2秒前
wyt发布了新的文献求助10
4秒前
杨然完成签到 ,获得积分10
6秒前
CodeCraft应助自由的果汁采纳,获得10
6秒前
7秒前
9秒前
9秒前
勤恳的摩托完成签到,获得积分10
10秒前
10秒前
Yuna完成签到,获得积分10
10秒前
qq1640564935完成签到,获得积分10
11秒前
12秒前
ni完成签到,获得积分20
12秒前
13秒前
8R60d8应助长孙兰溪采纳,获得10
13秒前
14秒前
杳鸢应助临江仙采纳,获得10
14秒前
Hahawang发布了新的文献求助10
14秒前
初七发布了新的文献求助10
15秒前
围城完成签到,获得积分10
15秒前
杳鸢应助橘子味的风采纳,获得10
16秒前
嘟嘟嘟比巴卜关注了科研通微信公众号
19秒前
JZ完成签到,获得积分20
19秒前
freeaway完成签到,获得积分10
20秒前
20秒前
DC-CIK军团完成签到,获得积分10
20秒前
从容芮应助风趣的芝麻采纳,获得30
20秒前
肚皮完成签到 ,获得积分10
22秒前
wanci应助juju采纳,获得10
22秒前
22秒前
23秒前
23秒前
华仔应助DC-CIK军团采纳,获得10
24秒前
24秒前
平淡茈完成签到,获得积分10
24秒前
25秒前
高分求助中
歯科矯正学 第7版(或第5版) 1004
Semiconductor Process Reliability in Practice 1000
Smart but Scattered: The Revolutionary Executive Skills Approach to Helping Kids Reach Their Potential (第二版) 1000
Nickel superalloy market size, share, growth, trends, and forecast 2023-2030 600
GROUP-THEORY AND POLARIZATION ALGEBRA 500
Mesopotamian divination texts : conversing with the gods : sources from the first millennium BCE 500
Days of Transition. The Parsi Death Rituals(2011) 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3234164
求助须知:如何正确求助?哪些是违规求助? 2880584
关于积分的说明 8216048
捐赠科研通 2548171
什么是DOI,文献DOI怎么找? 1377575
科研通“疑难数据库(出版商)”最低求助积分说明 647925
邀请新用户注册赠送积分活动 623302