文献类型：期刊文献

英文题名：Synthesis of a pH-responsive nano-cellulose/sodium alginate/MOFs hydrogel and its application in the regulation of water and N-fertilizer

作者：Wang, Yuqi[1] Shaghaleh, Hiba[1] Hamoud, Youself Alhaj[2] Zhang, Shuangsheng[1] Li, Pengfei[3] Xu, Xu[1] Liu, He[4]

第一作者：Wang, Yuqi

通信作者：Xu, X[1];Liu, H[2]

机构：[1]Nanjing Forestry Univ, Jiangsu Prov Key Lab Chem & Utilizat Agroforest B, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Jiangsu Key Lab Biomass Based Green Fuels & Chem, Nanjing 210037, Jiangsu, Peoples R China;[2]Hohai Univ, Coll Agr Sci & Engn, Nanjing 210098, Peoples R China;[3]Guangxi Univ Nationalities, Guangxi Key Lab Chem & Engn Forest Prod, Guangxi Collaborat Innovat Ctr Chem & Engn Forest, Nanning 530006, Peoples R China;[4]Chinese Acad Forestry, Natl Engn Lab Biomass Chem Utilizat, Key & Open Lab Forest Chem Engn,State Forestry Ad, Inst Chem Ind Forestry Prod,Key Lab Biomass Energ, Nanjing 210042, Jiangsu, Peoples R China

年份：2021

卷号：187

起止页码：262-271

外文期刊名：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES

收录：;EI(收录号：20242616373542);Scopus(收录号：2-s2.0-85111226228);WOS:【SCI-EXPANDED(收录号:WOS:000691786200005)】；

基金：This work was supported by the Fundamental Research Funds of CAF (CAFYBB2020QC003) and the Opening Project of Guangxi Key Labo-ratory of Forest Products Chemistry and Engineering (GXFK2008) .

语种：英文

外文关键词：Cellulose; Metal-organic frameworks; Slow-release fertilizer

摘要：In order to circumvent the water eutrophication caused by nitrogen loss in agriculture, slow-release and highwater containing fertilizers have captured much attention. Considering the unstable release of traditional slow-released fertilizers, novel strategies need to be designed to meet the steady release of fertilizers. Herein, by integrating cellulose-based hydrogel with MIL-100(Fe), a pH-sensitive Cellulose/MOFs hydrogel (CAM) with a high surface area (45.25 m(2)/g) was devised. The volume changes and the water adsorption of the hydrogels were uncovered from pH 3 to pH 11, where the highest water adsorption (100 g/g) was achieved at pH 11. Besides, a pH-sensitive urea slow release fertilizer (U-CAM) was also designed. The urea release of the U-CAM at pH 11 was much slower than that of the U-CAM at pH 3, which indicated its potential application in arid regions. In parallel with a favorable water-holding capacity, the totally loss of the soil moisture loaded with U-CAM was slowed down by 18 days as compared with the pure soil. The positive effect of the U-CAM on the growth of wheat was indexed with the germination rate, number of tillers, photosynthetic rate and chlorophyll content of the crop, which verified their further application in irrigating farming.