?url_ver=Z39.88-2004&rft_id=1417011066&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=KONVERSI+NANOSELULOSA+DARI+LIMBAH+KULIT+PISANG+KEPOK%0D%0AMENJADI+GULA+ALKOHOL+MENGGUNAKAN+NANOKATALIS%0D%0ANi0%2C75Cu0%2C25Fe2O4+DENGAN+BANTUAN+IRRADIASI+SINAR+UV&rft.creator=LILIAN+ELISABETH+S.%2C+1417011066&rft.subject=QD+Chemistry&rft.description=Konversi+nanoselulosa+menjadi+gula+alkohol+pada+penelitian+ini+dikatalisasi+oleh%0D%0Ananokatalis+Ni0%2C75Cu0%2C25Fe2O4+dengan+bantuan+irradiasi+sinar+UV.+Nanoselulosa%0D%0Adipreparasi+dari+limbah+kulit+pisang+kepok+melalui+tahap+delignifikasi%2C+pemutihan%0D%0A(bleaching)%2C+dan+hidrolisis+menggunakan+asam+nitrat+disertai+dengan+proses%0D%0Asonikasi.+Nanoselulosa+yang+digunakan+memiliki+indeks+kristalinitas+sebesar%0D%0A40%2C63%25+dan+ukuran+partikel+sebesar+20%2C52+nm.+Nanokatalis+Ni0%2C75Cu0%2C25Fe2O4%0D%0Adipreparasi+dengan+metode+sol-gel+menggunakan+pektin+sebagai+agen+pengemulsi.%0D%0APreparasi+nanokatalis+dilakukan+melalui+langkah-langkah+pencampuran%2C%0D%0Apenguapan%2C+dan+kalsinasi+pada+temperatur+600+oC.+Hasil+karakterisasi+nanokatalis%0D%0Amenggunakan+XRD+menunjukkan+bahwa+nanokatalis+memiliki+fasa+kristalin%0D%0Adominan+NiFe2O4+dan+CuFe2O4+dengan+ukuran+kristal+20%2C8+nm.+Nanokatalis%0D%0Amemiliki+situs+asam+Br%C3%B8nsted-Lowry+dan+Lewis+dengan+jumlah+situs+asam+sebesar%0D%0A1%2C389+mmol+piridin%2F+gram+nanokatalis.+Berdasarkan+hasil+TEM%2C+nanokatalis%0D%0Amemiliki+bentuk+kubus+spinel+ferrit+dengan+ukuran+partikel+sebesar+20%2C3+nm.%0D%0AEnergi+celah+pita+nanokatalis+sebesar+3%2C439+eV.+Hasil+konversi+nanoselulosa+kulit%0D%0Apisang+kepok+menggunakan+nanokatalis+Ni0%2C75Cu0%2C25Fe2O4+dengan+bantuan%0D%0Airradiasi+sinar+UV+dilakukan+dengan+variabel+waktu+konversi%2C+yaitu+15+menit%2C+30%0D%0Amenit%2C+45+menit%2C+dan+60+menit.+Presentase+nanoselulosa+terkonversi+didapatkan%0D%0Asebesar+18%25%2C+22%25%2C+14%25%2C+dan+16%25.+Konsentrasi+glukosa+larutan+hasil+konversi%0D%0Amasing-masing+sebesar+23%2C91+ppm%2C+22%2C39+ppm%2C+26%2C64+ppm%2C+dan+22%2C70+ppm.+Hal%0D%0Aini+menunjukkan+bahwa+nanokatalis+telah+aktif+dalam+mengkonversi+nanoselulosa%0D%0Amenjadi+gula+reduksi+tetapi+belum+optimal+untuk+mengkonversi+nanoselulosa%0D%0Amenjadi+gula+alkohol.%0D%0AKata+kunci%3A+gula+alkohol%2C+nanokatalis%2C+spinel+ferit%2C+nanoselulosa%2C+kulit+pisang%0D%0AKepok%0D%0A%0D%0A%0D%0A%0D%0Aabstract%0D%0A%0D%0AIn+this+research%2C+conversion+of+nanocellulose+into+sugar+alcohol+was+catalyzed+by%0D%0ANi0.75Cu0.25Fe2O4+nanocatalyst+under+UV+light+irradiation.+The+nanocellulose+was%0D%0Aprepared+from+kepok+banana+peels+waste+through+some+process+like%0D%0Adelignification%2C+bleaching%2C+and+hydrolysis+using+nitric+acid+with+the+sonication%0D%0Aprocess.+The+nanocellulose+that+used+in+this+research+has+40.63%25+of+crystallinity%0D%0Aindex+with+particle+size+of+20.52+nm.+The+Ni0.75Cu0.25Fe2O4+nanocatalyst+was%0D%0Aprepared+via+sol-gel+method+using+pectin+as+an+emulsifying+agent.+Preparation+of%0D%0Ananocatalyst+was+carried+out+by+mixing%2C+evaporating%2C+and+calcining+steps+at+600oC.%0D%0AThe+results+of+XRD+characterization+indicated+that+nanocatalyst+has+the+dominant%0D%0Acrystalline+phases+of+both+NiFe2O4+and+CuFe2O4+with+the+crystallite+size+of+20.8%0D%0Anm.+The+nanocatalyst+has+Br%C3%B8nsted-Lowry+and+Lewis+acid+sites+with+the+amount%0D%0Aof+acid+sites+of+1.389+mmol+pyridine%2F+gram+of+nanocatalyst.The+nanocatalyst+also%0D%0Ahas+spinel+ferrite+cubic+shape+with+the+particle+size+of+20.3+nm+as+seen+by+the%0D%0ATEM.+The+band-gap+energy+of+the+nanocatalyst+is+3.439+eV.+Conversion+of%0D%0Ananocellulose+from+kepok+banana+peels+waste+using+Ni0.75Cu0.25Fe2O4%0D%0Ananocatalyst+under+UV+light+irradiation+was+carried+out+with+conversion+times+of%0D%0A15%2C+30%2C+45%2C+and+60+minutes.+The+percentage+of+converted+nanocellulose+are+18%2C+22%2C%0D%0A14%2C+and+16%25.+The+concentration+of+glucose+from+the+product+convertion+are+23.91%2C%0D%0A22.39%2C+26.64%2C+and+22.70+ppm.+This+indicates+that+the+nanocatalyst+is+active+to%0D%0Aconvert+nanocellulose+into+reducing+sugar+but+its+activity+was+not+optimal+yet+to%0D%0Aconvert+nanocellulose+into+sugar+alcohol.%0D%0AKeywords%3A+sugar+alcohol%2C+nanocatalyst%2C+spinel+ferrite%2C+nanocellulose%2C+kepok%0D%0Abanana+peels&rft.publisher=Fakultas+Matematika+dan+Ilmu+Pengetahuan+Alam&rft.date=2018-09-26&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F33819%2F1%2FABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F33819%2F2%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F33819%2F3%2FSKRIPSI%2520TANPA%2520BAB%2520%2520PEMBAHASAN.pdf&rft.identifier=++LILIAN+ELISABETH+S.%2C+1417011066++(2018)+KONVERSI+NANOSELULOSA+DARI+LIMBAH+KULIT+PISANG+KEPOK+MENJADI+GULA+ALKOHOL+MENGGUNAKAN+NANOKATALIS+Ni0%2C75Cu0%2C25Fe2O4+DENGAN+BANTUAN+IRRADIASI+SINAR+UV.++Fakultas+Matematika+dan+Ilmu+Pengetahuan+Alam%2C+Universitas+Lampung.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F33819%2F